APPSC Polytechnic Lecturers 2025: Lecturers in Government Polytechnic Colleges (Notification 13/2023), Paper II automobileengineering

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Notations :
1.Options shown in green color and with   icon are correct.
2.Options shown in red color and with   icon are incorrect.



Question Paper Name :                                             ECLR2
Subject Name :                                                   Paper II Lecturer in Auto mobile Engineering
Creation Date :                                                  2025-07-16 22:37:07
Duration :                                                       150
Total Marks :                                                    300
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                               Paper II Lecturer in Auto mobile Engineering
Group Number :                                                   1
Group Id :                                                       441009740353
Group Maximum Duration :                                         0
Group Minimum Duration :                                         150
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Break time :                                                     0
Group Marks :                                                    300



                               Paper II Lecturer in Auto mobile Engineering
Section Id :                                                     441009746146
Section Number :                                                 1
Section type :                                                   Online
Mandatory or Optional :                                          Mandatory
Number of Questions :                                            150
Number of Questions to be attempted :                            150
Section Marks :                                                  300
Section Negative Marks :                                         0.66
Maximum Instruction Time :                                       0
Sub-Section Number :                                             1
Sub-Section Id :                                                 441009748623
Question Shuffling Allowed :                                     Yes

Question Number : 1 Question Id : 441009679689 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which of the following is the imaginary machine which would continuously absorb heat from a single
thermal reservoir and convert this heat completely into work? The efficiency of such a machine would be
100%.
Options :

1.


2.


3.


4.



Question Number : 2 Question Id : 441009822287 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
When a given amount of heat is added at a high temperature, the increase in entropy is:
Options :
1.   Zero
2.   Infinite
3.   Small
4.   Large


Question Number : 3 Question Id : 441009822308 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which of the following components drives the air compressor mounted on the vehicle?
Options :
1.   Alternator
2.   Flywheel
3.   Camshaft eccentric
4.   Crankshaft
Note: For this question, ambiguity is found in question/answer. Candidate will get full marks for this question if any of the
correct options are chosen.


Question Number : 4 Question Id : 441009679695 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66




Note: For this question, discrepancy is found in question/answer.
So,this question is ignored for all candidates.
Options :

1.


2.


3.


4.



Question Number : 5 Question Id : 441009800050 Question Type : MCQ

Correct Marks : 2 Wrong Marks : 0.66
Which thermometer uses electromotive force as its thermometric property?
Options :
1.   Constant-volume gas thermometer
2.   Resistance thermometer
3.   Mercury-in-glass thermometer
4.   Thermocouple


Question Number : 6 Question Id : 441009800098 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
The measure of success for a heat engine is called its ______.
Options :
1.   thermal efficiency
2.   work factor
3.   mechanical advantage
4.   coefficient of performance


Question Number : 7 Question Id : 441009822367 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is the relationship between crank throw and piston stroke when studying engine performance?
Options :
1.   Stroke is half the crank throw.
2.   Crank throw is twice the piston stroke.
3.   Piston stroke is twice the crank throw.
4.   They are equal.


Question Number : 8 Question Id : 441009832498 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What do the initials 'TCI' stand for in modern ignition technology?
Options :
1.   Thermal CDI Ignition
2.   Turbocharged Capacitive Ignition
3.   Transverse Coil Injector
4.   Transistorized Coil Ignition


Question Number : 9 Question Id : 441009679697 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
The De Broglie equation shows the relation between:
Options :

1.


2.


3.


4.



Question Number : 10 Question Id : 441009679698 Question Type : MCQ

Correct Marks : 2 Wrong Marks : 0.66


Options :

1.


2.

3.   To decreae the higher temperature

4.



Question Number : 11 Question Id : 441009771827 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Read the given statement and conclusions carefully and decide which of the given conclusion(s) logically follow(s) from the statement.

Statement:

Entropy is a thermodynamic property that measures the degree of disorder or randomness in a system, and it increases in all real
(irreversible) processes.

Conclusions:

I) In an isolated system, the entropy always increases for any real process.
II) Entropy remains constant in an ideal reversible process.
Options :
1.   Only conclusion I follows.
2.   Only conclusion II follows.
3.   Both conclusions I and II follow.
4.   Neither conclusion I nor II follows.


Question Number : 12 Question Id : 441009679696 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Considering the following sentence: The characteristics of entropy in a summarised form are:

1. It decrease when heat is supplied irrespective of the fact whether temperature changes or not.
2. It decrease when heat is removed whether temperature changes or not.
3. It remains unchanged in all adiabatic frictionless processes.
4. It increases if temperature of heat is lowered without work being done as in a throttling process.
Options :

1.


2.


3.


4.



Question Number : 13 Question Id : 441009679701 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66

Read the given assertion (A) and reason (R) and select the most appropriate option.

(A): The heat absorbed during the isothermal expansion of a gas against vacuum is zero.
(R): The volume occupied by the molecules of an ideal gas is zero
Options :

1.


2.


3.


4.



Question Number : 14 Question Id : 441009679702 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66




                                                   a
Options :

1.

2.   (i)-c, (ii)-a, (iii)-b, (iv)-d
3.


4.



Question Number : 15 Question Id : 441009679703 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66




Options :

1.


2.


3.


4.



Question Number : 16 Question Id : 441009832502 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Overall, engine heat is transferred to the cooling medium by which combination of modes?
Options :
1.   Conduction only
2.   Conduction, convection, and radiation
3.   Convection only
4.   Convection and radiation only


Question Number : 17 Question Id : 441009679706 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
In order to derive expression for LMTD for various types of heat exchangers, which of the following
assumptions are made?

1. The overall heat transfer coefficient U can vary.
2. The flow conditions are unsteady.
3. The specific heats and mass flow rates of both fluids are constant.
4. There is no change of phase either of the fluids during the heat transfer.
Options :

1.


2.


3.


4.



Question Number : 18 Question Id : 441009832525 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Heat transfer from the coolant liquid to the surrounding air in an engine cooling system is mainly by:
Options :
1.   Convection
2.   Conduction
3.   Radiation
4.   Absorption


Question Number : 19 Question Id : 441009679707 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66

Options :
1.


2.


3.


4.



Question Number : 20 Question Id : 441009679708 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66




Options :

1.


2.


3.


4.



Question Number : 21 Question Id : 441009831837 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Select the option that is correct regarding the following two statements labelled Assertion (A) and Reason (R).
A) In steady-state one-dimensional heat conduction through a plane wall, the temperature distribution is linear.
R) The rate of heat conduction in a plane wall is proportional to the temperature difference and inversely proportional to its thickness.
Options :
1.   Both A and R are true, and R is the correct explanation of A
2.   Both A and R are true, but R is not the correct explanation of A
3.   A is true, but R is false
4.   A is false, but R is true


Question Number : 22 Question Id : 441009832097 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Match the following concepts in conduction with their correct interpretations:
                            Concept                                                          Interpretation
A. One-dimensional conduction                                       1. Heat spreads uniformly due to high internal conduction

2. Caused by microscopic irregularities at the interface of two
B. Thermal contact resistance
                                                           solids
                                                           3. Heat flows along one primary axis; variation in other directions
C. Lumped heat system
                                                           ignored
                                                           4. Indicates how quickly a material adjusts its temperature
D. Thermal diffusivity
                                                           internally
Options :
1.   A–1, B–4, C–2, D–3
2.   A–4, B–1, C–3, D–2
3.   A–3, B–2, C–1, D–4
4.   A–2, B–3, C–4, D–1


Question Number : 23 Question Id : 441009679711 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66




Options :

1.


2.


3.


4.



Question Number : 24 Question Id : 441009679712 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
ML2T-2 is dimension of _____.
Options :
1.


2.


3.


4.



Question Number : 25 Question Id : 441009873640 Question Type : MCQ

Correct Marks : 2 Wrong Marks : 0.66
What does the study of fluid statics involve?
Options :
1.   Behaviour of fluids in motion with pressure forces
2.   Study of fluid flow rates
3.   Behaviour of fluids in motion without pressure forces
4.   Behaviour of fluids at rest


Question Number : 26 Question Id : 441009873647 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
The study of fluids in motion where pressure forces are not considered is called ____________.
Options :
1.   fluid kinematics
2.   fluid dynamics
3.   fluid statics
4.   hydrodynamics


Question Number : 27 Question Id : 441009679717 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :

1.


2.


3.


4.



Question Number : 28 Question Id : 441009718604 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Why is it crucial to reduce the high velocity of the liquid leaving the impeller?
Options :
1.   To increase the rotational speed of the impeller
2.   To prevent damage to the delivery pipe
3.   To prevent energy loss and maintain pump efficiency
4.   To ensure uniform temperature throughout the system


Question Number : 29 Question Id : 441009873665 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
When a uniform flow passes over a source-sink pair of equal strength, what body shape is formed?
Options :
1.   Flow past a circular cylinder
2.   Flow past a half-body
3.   Flow past a Rankine oval body
4.   Spherical body

Question Number : 30 Question Id : 441009718622 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Why is a free vortex formed in the vortex chamber of a centrifugal pump?
Options :
1.   Because work is constantly being done on the liquid
2.   Because the torque produced for the liquid does not change
3.   Because the liquid's energy increases
4.   Because the chamber is perfectly sealed


Question Number : 31 Question Id : 441009868789 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What does it mean for an equation to be dimensionally homogeneous?
Options :
1.   All variables must be measured in SI units.
2.   The left-hand side must always be greater than the right-hand side.
3.   The dimensions on both sides of the equation must be the same.
4.   The equation must be mathematically correct.


Question Number : 32 Question Id : 441009873685 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is the resultant flow obtained by the superposition of uniform flow and a doublet at the origin?
Options :
1.   Flow past a half-body
2.   Flow past a sphere
3.   Flow past an airfoil
4.   Flow past a circular cylinder


Question Number : 33 Question Id : 441009831478 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
A statement is given followed by two conclusions. Identify which of the given conclusion(s) follow(s) based on the following statement.

Statement:
In fluid statics, pressure variation occurs only due to the weight of the fluid, whereas flow past immersed bodies involves additional
forces like drag and lift due to relative motion.

Conclusions:
I) Drag force exists in static fluid conditions where there is no relative motion between the fluid and the body.
II) In fluid statics, immersed bodies experience lift due to velocity gradients around the surface.
Options :
1.   Only conclusion I follows
2.   Only conclusion II follows
3.   Both conclusions I and II follow
4.   Neither conclusion I nor II follows


Question Number : 34 Question Id : 441009831480 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
A statement is given followed by two conclusions. Identify which of the given conclusion(s) follow(s) based on the following statement.

Statement:
Axial flow pumps are used in applications requiring high discharge at relatively low heads, and they work on the principle of lifting
fluid along the axis of the impeller rotation.

Conclusions:

I) Axial flow pumps are best suited for applications involving high pressure and low flow rates.
II) Axial flow pumps are typically used in flood control, irrigation, and circulation systems due to their high flow capabilities.
Options :
1.   Only conclusion I follows
2.   Only conclusion II follows
3.   Both conclusions I and II follow
4.   Neither conclusion I nor II follows


Question Number : 35 Question Id : 441009679723 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Read the given assertion (A) and reason (R) and select the most appropriate option.

(A): The positive displacement pump usually has one or more chambers which are alternately filled with the
liquid to be pumped and then emptied again.
(R): As such the discharge of liquid pumped by these pump almost wholly depends on the speed of the
pump.
Options :

1.


2.


3.


4.



Question Number : 36 Question Id : 441009679724 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66




Options :

1.


2.


3.


4.



Question Number : 37 Question Id : 441009679725 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66

Options :

1.


2.


3.


4.



Question Number : 38 Question Id : 441009679726 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66




Options :

1.


2.


3.


4.



Question Number : 39 Question Id : 441009679728 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is used to measure the strain in a workplace?
Options :
1.

2.


3.

4.   Anemometer

Question Number : 40 Question Id : 441009748684 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which of the following best define the Gauge Factor?
Options :
1.   The amount of strain a gauge can withstand before breaking.
2.   A measure of the gauge's sensitivity to temperature changes.
3.   The change in resistance for a given value of strain.
4.   The maximum voltage that can be applied to the gauge.


Question Number : 41 Question Id : 441009802990 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What type of flow is the transit-time ultrasonic flowmeter designed to measure?
Options :
1.   Multiphase flow
2.   Slurry flow
3.   Flow in dirty liquids
4.   Flow in clean liquids


Question Number : 42 Question Id : 441009679730 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :

1.


2.


3.


4.



Question Number : 43 Question Id : 441009679731 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :
1.


2.


3.

4.



Question Number : 44 Question Id : 441009748884 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is the purpose of using a shell construction for annular plug gauges?
Options :
1.   To increase the gauge's accuracy
2.   To reduce the gauge's weight
3.   To improve the gauge's durability
4.   To make the gauge easier to grip


Question Number : 45 Question Id : 441009679734 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :
1.


2.


3.


4.



Question Number : 46 Question Id : 441009748913 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
When checking the 'GO' limit, using a combined dual purpose limit gauge how should the gauge be inserted?
Options :
1.   Tilted at a 45-degree angle
2.   With the handle perpendicular to the axis of the hole
3.   With the handle parallel to the axis of the hole
4.   With a twisting motion


Question Number : 47 Question Id : 441009803015 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What type of transducer is used to project the ultrasonic beam in Transmissive Flowmeters?
Options :
1.   Electromagnetic transducer
2.   Piezoelectric ceramic crystal transducer
3.   Optical transducer
4.   Thermal transducer


Question Number : 48 Question Id : 441009831508 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
A statement is given followed by two conclusions. Identify which of the given conclusion(s) follow(s) based on the following statement.

Statement:
Temperature transducers, such as thermocouples, RTDs (Resistance Temperature Detectors), and thermistors, are widely used in
industrial and control applications for accurate temperature monitoring.

Conclusions:
I) Thermocouples generate voltage due to the Seebeck effect, which is proportional to the temperature difference between two junctions.
II) RTDs provide higher accuracy and stability over time compared to thermocouples, especially in steady-state measurements.
Options :
1.   Only conclusion I follows
2.   Only conclusion II follows
3.   Both conclusions I and II follow
4.   Neither conclusion I nor II follows


Question Number : 49 Question Id : 441009831528 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
A statement is given followed by two conclusions. Identify which of the given conclusion(s) follow(s) based on the following statement.

Statement:
Plug gauges are fixed limit gauges used to check the dimensional accuracy of holes, ensuring that they are within tolerance limits in
manufacturing operations.

Conclusions:
I) Plug gauges are adjustable gauges and can be resized for checking different hole diameters.
II) Plug gauges are commonly made in GO and NOGO pairs to verify whether a hole falls within acceptable size limits.
Options :
1.   Only conclusion I follows
2.   Only conclusion II follows
3.   Both conclusions I and II follow
4.   Neither conclusion I nor II follows


Question Number : 50 Question Id : 441009831890 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Select the option that is correct regarding the following two statements labelled Assertion (A) and Reason (R).
A) A magnetic flow meter can accurately measure the flow rate of conductive liquids without any moving parts.
R) Magnetic flow meters operate based on Faraday’s law of electromagnetic induction, which relates the induced voltage to the velocity
of the conductive fluid.
Options :
1.   Both A and R are true, and R is the correct explanation of A
2.   Both A and R are true, but R is not the correct explanation of A
3.   A is true, but R is false
4.   A is false, but R is true


Question Number : 51 Question Id : 441009831917 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Select the option that is correct regarding the following two statements labelled Assertion (A) and Reason (R).
A) Slip gauges are used as a reference standard for precise linear measurements in metrology.
R) Slip gauges are made from soft materials so they can be easily reshaped to adjust their dimensions.
Options :
1.   Both A and R are true, and R is the correct explanation of A
2.   Both A and R are true, but R is not the correct explanation of A
3.   A is true, but R is false
4.   A is false, but R is true


Question Number : 52 Question Id : 441009679740 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66

Options :

1.


2.


3.


4.



Question Number : 53 Question Id : 441009679741 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :
1.


2.


3.


4.



Question Number : 54 Question Id : 441009679743 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
The range of coefficient of friction for brake lining is_______.
Options :
1.   0.1-0.2
2.   0.6-0.7
3.   0.3-0.4
4.   0.2-0.3


Question Number : 55 Question Id : 441009748966 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
In an anti-roll bar setup, what are the ends of the torsion bar bent to act as?
Options :
1.   Dampers

2.   Levers
3.   Springs
4.   Stabilisers


Question Number : 56 Question Id : 441009848710 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Select the main purpose of wheel balancing in vehicles.
Options :
1.   To increase the engine power
2.   To reduce tail pipe emissions
3.   To ensure even tire wear and smooth ride
4.   To reduce air drag


Question Number : 57 Question Id : 441009850872 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which of the following is NOT a function of the lubrication system in IC engines?
Options :
1.   Reduce the friction between moving parts
2.   Cleaning the engines
3.   Cooling the engines
4.   Ignite the air fuel mixture


Question Number : 58 Question Id : 441009679744 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :

1.


2.


3.


4.



Question Number : 59 Question Id : 441009679745 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66

Options :

1.


2.


3.


4.

Question Number : 60 Question Id : 441009848958 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is a common symptom of over-inflated tyres?
Options :
1.   An uneven tread wear
2.   Increase tail pipe emissions
3.   Tyre overheating
4.   Reduced fuel economy


Question Number : 61 Question Id : 441009851056 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Slow cranking by the starter can be caused by all of the following, EXCEPT:
Options :
1.   discharged battery
2.   corroded battery cables
3.   an open neutral safety switch
4.   engine mechanical problems


Question Number : 62 Question Id : 441009679749 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :
1.


2.


3.


4.



Question Number : 63 Question Id : 441009849152 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
If the tyres are specified as 205/45R16 83 V, what does the letter 'R' represent?
Options :
1.   Approximate width of the tyre in millimetres
2.   Sidewall height
3.   Load Index
4.   Construction type


Question Number : 64 Question Id : 441009850330 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Identify the component of an coil-ignition system which is used to prevent arcing at the contact breaker points.
Options :
1.   Condensor
2.   Spark plug
3.   Distributor
4.   Ignition coil

Question Number : 65 Question Id : 441009831543 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
A statement is given followed by two conclusions. Identify which of the given conclusion(s) follow(s) based on the following statement.

Statement:
Modern automotive suspension systems may utilise mechanical gear linkages or geared actuators in active suspension setups for better
response and control.

Conclusions:
I) Gear-actuated active suspension systems can adjust stiffness and damping in real-time, based on road and load conditions.
II) Suspension systems with mechanical gears eliminate the need for any electronic sensors or feedback mechanisms.
Options :
1.   Only conclusion I follows
2.   Only conclusion II follows
3.   Both conclusions I and II follow
4.   Neither conclusion I nor II follows


Question Number : 66 Question Id : 441009831547 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
A statement is given followed by two conclusions. Identify which of the given conclusion(s) follow(s) based on the following statement.

Statement:
In vehicle maintenance, dynamic wheel balancing is used to ensure that the weight of the wheel-tire assembly is distributed evenly
during rotation.

Conclusions:
I) Wheel balancing is the same as wheel alignment and both procedures can be substituted for each other.
II) A perfectly balanced wheel will have zero tire wear over the vehicle's entire service life.
Options :
1.   Only conclusion I follows
2.   Only conclusion II follows
3.   Both conclusions I and II follow
4.   Neither conclusion I nor II follows


Question Number : 67 Question Id : 441009831953 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R).

Assertion (A): Wheel balancing is essential to prevent vibrations and uneven tire wear at high speeds.
Reason (R): Wheel balancing involves adjusting the suspension geometry to improve steering alignment.
Options :
1.   Both A and R are true, and R is the correct explanation of A
2.   Both A and R are true, but R is not the correct explanation of A
3.   A is true, but R is false
4.   A is false, but R is true


Question Number : 68 Question Id : 441009679756 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which material is an alloy of Aluminium, Magnesium with small quantity of Chromium?
Options :
1.

2.


3.


4.



Question Number : 69 Question Id : 441009863110 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Identify the heat treatment process that increases the surface hardness of a metal while maintaining a softer core.
Options :
1.   Annealing
2.   Tempering
3.   Case hardening
4.   Quenching


Question Number : 70 Question Id : 441009872767 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Identify the surface treatment method that involves the diffusion of carbon into steel surface.
Options :
1.   Nitriding
2.   Carburising
3.   Shot peening
4.   Electroplating


Question Number : 71 Question Id : 441009863057 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Why is etching done after polishing?
Options :
1.   To increase reflectivity
2.   To remove scratches
3.   To reveal the microstructures
4.   To harden the surface


Question Number : 72 Question Id : 441009863087 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which of the following is NOT a purpose of heat treatment?
Options :
1.   Make material brittle
2.   Increase hardness
3.   Increase toughness
4.   Increase strength


Question Number : 73 Question Id : 441009873014 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Time-dependent and permanent deformation of materials when subjected to a constant load or stress is called:
Options :
1.   Creep
2.   Fatigue

3.   Cracks
4.   Break


Question Number : 74 Question Id : 441009873059 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
The S-N curve for a material represents the relationship between:
Options :
1.   stress and temperature
2.   stress and time
3.   stress and strain
4.   stress and number of cycles to failure


Question Number : 75 Question Id : 441009679763 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :
1.


2.


3.


4.



Question Number : 76 Question Id : 441009863102 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
The process of heating steel to an elevated temperature for an extended time period and then cooling it slowly in a furnace is called:
Options :
1.   annealing
2.   tempering
3.   normalising
4.   quenching


Question Number : 77 Question Id : 441009863125 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
The heat treatment process of adding nitrogen to the surface is called:
Options :
1.   carburising
2.   tempering
3.   nitriding
4.   quenching


Question Number : 78 Question Id : 441009831587 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
A statement is given followed by two conclusions. Identify which of the given conclusion(s) follow(s) based on the following statement.

Statement:
Understanding the internal structure of metals is crucial in materials science to evaluate grain boundaries, defects, and phase
distributions.

Conclusions:
I) Metallurgical microscopes are commonly used to observe the grain structure and phase boundaries after proper specimen preparation.
II) Etching the polished metal surface with suitable chemicals reveals structural details under a microscope.
Options :
1.   Only conclusion I follows
2.   Only conclusion II follows
3.   Both conclusions I and II follow
4.   Neither conclusion I nor II follows


Question Number : 79 Question Id : 441009679767 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 80 Question Id : 441009831983 Question Type : MCQ
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Select the option that is correct regarding the following two statements labelled Assertion (A) and Reason (R).
A) Components subjected to fluctuating or cyclic loading often fail at stress levels much lower than their yield strength.
R) Fatigue failure occurs due to the progressive growth of microscopic cracks under repeated stress cycles.
Options :
1.   Both A and R are true, and R is the correct explanation of A
2.   Both A and R are true, but R is not the correct explanation of A
3.   A is true, but R is false
4.   A is false, but R is true


Question Number : 81 Question Id : 441009679769 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66

Options :

1.


2.


3.


4.



Question Number : 82 Question Id : 441009679770 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 83 Question Id : 441009890907 Question Type : MCQ
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Identify the type of gear train which is having only one gear on each shaft.
Options :
1.   Simple gear train
2.   Compound gear train

3.    Reverted gear train
4.    Epicyclic gear train


Question Number : 84 Question Id : 441009892285 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which of the following is NOT a type of Centrifugal Governors?
Options :
1.    Watt governor
2.    Joule governor
3.    Porter governor
4.    Hartnell governor


Question Number : 85 Question Id : 441009904203 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is the primary function of brakes in vehicles?
Options :
1.    To enhance suspension performance
2.    To increase engine power
3.    To improve fuel efficiency
4.    To slow down or stop the vehicle


Question Number : 86 Question Id : 441009679774 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
If a crate on a conveyor moves towards the left at a constant rate and takes 40 sec to traverse 25-ft conveyor, then determine linear velocity of
crate.
Options :
1.


2.


3.


4.



Question Number : 87 Question Id : 441009890333 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is Kennedy’s Theorem?
Options :
1.    Three points have the same velocity.
2.    Acceleration is always perpendicular to velocity.
3.    Three instantaneous centres for three bodies in relative motion lie on a straight line.
4.    Instantaneous centres always lie inside the linkage.


Question Number : 88 Question Id : 441009891537 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Identify the type of gear train in which axes of the shafts on which the gears are mounted may move relative to a fixed axis.
Options :
1.    Simple gear train
2.    Compound gear train

3.   Reverted gear train
4.   Epicyclic gear train


Question Number : 89 Question Id : 441009905009 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
How is the energy absorbed by brakes dissipated into the atmosphere?
Options :
1.   In the form of heat
2.   In the form of light
3.   In the form of vibrations
4.   In the form of sound


Question Number : 90 Question Id : 441009679780 Question Type : MCQ
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Options :
1.




2.

3.



4.




Question Number : 91 Question Id : 441009891746 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is hunting in a governor?
Options :
1.   Sudden drop in load
2.   The continuous fluctuation of engine speed above and below mean speed
3.   Increase in effort of the governor
4.   Frictional resistance in sleeve


Question Number : 92 Question Id : 441009905190 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What type of maintenance is required for chain drives?
Options :
1.   Water cooling
2.   Lubrication and tension adjustment
3.   Magnetic alignment
4.   Changing pulley alignment


Question Number : 93 Question Id : 441009831623 Question Type : MCQ

Correct Marks : 2 Wrong Marks : 0.66
A statement is given followed by two conclusions. Identify which of the given conclusion(s) follow(s) based on the following statement.

Statement:
Gear trains are used to transmit motion and power between shafts and can be classified based on their arrangement and velocity ratios.

Conclusions:
I) In a simple gear train, the velocity ratio is the product of the velocity ratios of individual gears, and the direction of rotation alternates
with each gear.
II) A compound gear train allows higher speed ratios by mounting more than one gear on a shaft, and the direction of rotation of the
output gear is always the same as the input gear.
Options :
1.    Only conclusion I follows
2.    Only conclusion II follows
3.    Both conclusions I and II follow
4.    Neither conclusion I nor II follows


Question Number : 94 Question Id : 441009679782 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 95 Question Id : 441009831606 Question Type : MCQ
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A statement is given followed by two conclusions. Identify which of the given conclusion(s) follow(s) based on the following statement.

Statement:
The instantaneous centre (IC) of velocity plays a crucial role in analysing the planar motion of rigid bodies.

Conclusions:
I) The velocity of any point on the body is directed radially towards or away from the instantaneous centre.
II) The velocity of any point on the body is perpendicular to the line joining that point to the instantaneous centre.
Options :
1.    Only conclusion I follows
2.    Only conclusion II follows
3.    Both conclusions I and II follow
4.    Neither conclusion I nor II follows

Question Number : 96 Question Id : 441009679784 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 97 Question Id : 441009934121 Question Type : MCQ
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Match the following types of governors with their characteristics.

Type of governor                                                      Application/Characteristics
                                                                      1. The positions of the balls are affected by the forces set up by an
A. Pickering governor                                                 angular acceleration or deceleration of the spindle, in addition to
                                                                      centrifugal forces on the balls.
                                                                      2. It consists of three straight leaf springs arranged at equal angular
B. Hartung Governor
                                                                      intervals round the spindle.
C. Centrifugal governor (spring loaded)                               3. Wilson Hartnell governor
                                                                      4. The vertical arms of the bell crank levers are fitted with spring balls
D. Inertia governor                                                   that compress against the frame of the governor when the rollers at
                                                                      the horizontal arm press against the sleeve.
Options :
1.    A-3, B-1, C-2, D-4
2.    A-2, B-4, C-3, D-1
3.    A-4, B-3, C-2, D-1
4.    A-3, B-2, C-1, D-4


Question Number : 98 Question Id : 441009679787 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
When inertia forces are produced due to masses of accelerating parts that acts on a rigid body, the analysis is called:
Options :

1.


2.


3.


4.



Question Number : 99 Question Id : 441009679788 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66

The net force acting on the crosshead pin is known as:
Options :
1.   crank pin effort
2.   crank effort
3.   piston effort
4.   shaft effort


Question Number : 100 Question Id : 441009919193 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What assumption should be made for systems in static force analysis?
Options :
1.   To be in motion with constant velocity
2.   To be accelerating uniformly
3.   To be in dynamic equilibrium
4.   To be in static equilibrium


Question Number : 101 Question Id : 441009921923 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which force is imaginary and used only for dynamic analysis?
Options :
1.   Weight
2.   Inertia force
3.   Friction force
4.   Normal force


Question Number : 102 Question Id : 441009679789 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
The process of modifying a machine in such a way that unbalanced force is reduced to the minimum level is _____.
Options :

1.


2.


3.


4.



Question Number : 103 Question Id : 441009679790 Question Type : MCQ
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Options :
1.


2.


3.

4.



Question Number : 104 Question Id : 441009921856 Question Type : MCQ
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Where is Lami’s Theorem applicable?
Options :
1.   Three-force body in equilibrium
2.   Four-force body in equilibrium
3.   Two-force body in equilibrium
4.   Multiple force body in motion


Question Number : 105 Question Id : 441009679792 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
The natural frequency of free transverse vibration due to uniformly distributed load is _____.
(where δs is static deflection)
Options :

1.


2.


3.


4.



Question Number : 106 Question Id : 441009921951 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
How is the inertia force considered to act in D’Alembert’s principle?
Options :
1.   In the direction of acceleration
2.   Opposite to the direction of acceleration
3.   Perpendicular to the acceleration
4.   Along the velocity vector


Question Number : 107 Question Id : 441009921994 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is the condition that must be satisfied for balancing the reciprocating masses in multi-cylinder engines?
Options :
1.   All cranks are aligned
2.   Firing order is random
3.   Fuel injection is uniform
4.   Algebraic sum of all forces and couples is zero


Question Number : 108 Question Id : 441009922026 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which of the following is NOT taken into consideration while calculating the magnitude of centrifugal force in rotary balancing?
Options :

1.   Temperature
2.   Radius
3.   Mass
4.   Angular velocity


Question Number : 109 Question Id : 441009679795 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 110 Question Id : 441009679797 Question Type : MCQ
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Note: For this question, discrepancy is found in question/answer.
So,this question is ignored for all candidates.
Options :

1.


2.

3.


4.



Question Number : 111 Question Id : 441009679798 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :
1.


2.


3.


4.



Question Number : 112 Question Id : 441009679799 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
What is the main purpose of leaf spring in automobiles?
Options :

1.


2.


3.


4.



Question Number : 113 Question Id : 441009679800 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66



Note: For this question, discrepancy is found in question/answer.
So,this question is ignored for all candidates.
Options :

1.


2.

3. 400-450 degree Fahrenheit

4.



Question Number : 114 Question Id : 441009679801 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66

The modulus of rigidity (G) of stainless steel wire in kN/mm2 is ______.
Options :
1.


2.

3.   75
4.   85


Question Number : 115 Question Id : 441009679802 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
A mild steel shaft rotating at 200 rpm has to transmit 20 kW. Determine the torque transmitted.
Options :
1.


2.

3.   955 N-cm
4.



Question Number : 116 Question Id : 441009679803 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


Options :
1.   Left side of the centroidal axis
2.   Between the centroidal axis and the centre of curvature
3.   Right side of the centre of curvature
4.   Left side of the centre of curvature


Question Number : 117 Question Id : 441009679804 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
While designing a connecting rod, for buckling analysis about the X-axis (the axis in the plane of rotation), the end condition considered
should be _____.
Options :
1.


2.


3.


4.



Question Number : 118 Question Id : 441009679806 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 119 Question Id : 441009679807 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which of the following options is NOT correct, considering the stresses developed in the flywheel rim?
Options :

1.

2.

3.


4.



Question Number : 120 Question Id : 441009679808 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 121 Question Id : 441009679809 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Read the statement and conclusions carefully. Which of the given conclusion logically follow from the statement?

Statement: Consider the stresses in the shaft.
Conclusions:
(I) Shear stress is due to torsional load, normal stress is due to combined torsional and bending load.

(II) When a shaft is subjected to twisting moment only, diameter of shaft may be obtained from torsional equation.

Options :

1.


2.


3.


4.



Question Number : 122 Question Id : 441009679810 Question Type : MCQ
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Options :

1.

2.   (i)-b, (ii)-d, (iii)-c, (iv)-a

3.


4.



Question Number : 123 Question Id : 441009679811 Question Type : MCQ
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1.


2.


3.


4.



Question Number : 124 Question Id : 441009679812 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Which of the following is not a type of drilling machine?
Options :
1.   Pillar type drilling machine
2.   Radial drilling machine
3.   Hydraulic drilling machine
4.   Sensitive drilling machine


Question Number : 125 Question Id : 441009679813 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66



Options :

1.


2.

3.   Spot resistance welding
4.   Gas welding


Question Number : 126 Question Id : 441009679814 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Lapping is an operation of:
Options :

1.


2.


3.


4.



Question Number : 127 Question Id : 441009679815 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 128 Question Id : 441009679816 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
A process in which a reciprocating type of machine tool is used for producing small flat surfaces with the help of a
single point tool reciprocating over the stationary work piece is:
Options :

1.


2.


3.


4.



Question Number : 129 Question Id : 441009679817 Question Type : MCQ
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1.


2.


3.


4.



Question Number : 130 Question Id : 441009679818 Question Type : MCQ
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2.


3.

4.



Question Number : 131 Question Id : 441009679819 Question Type : MCQ
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2.


3.


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Question Number : 132 Question Id : 441009679820 Question Type : MCQ
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Options :
1.


2.


3.


4.



Question Number : 133 Question Id : 441009679821 Question Type : MCQ
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2.


3.


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Question Number : 134 Question Id : 441009831730 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Read the following statement and select the conclusion(s) that follow(s).

Statement:
Lathes are versatile machine tools used for producing cylindrical surfaces and carry out operations like turning, facing, threading and

drilling.

Conclusions:
I) In a lathe machine, the main cutting motion is provided by the tool while the feed motion is given by the workpiece rotation.
II) The selection of cutting speed, feed and depth of cut directly affects the surface finish, tool life and dimensional accuracy of the
machined component.
Options :
1.    Only conclusion I follows
2.    Only conclusion II follows
3.    Both conclusions I and II follow
4.    Neither conclusion I nor II follows


Question Number : 135 Question Id : 441009831749 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Read the following statement and select the conclusion(s) that follow(s).

Statement:
Milling machines perform operations where a rotating multi-point cutting tool removes material by advancing into the workpiece.

Conclusions:
I) In up milling (conventional milling), the cutter rotates against the feed direction, resulting in poor surface finish and tool wear at the
start of the cut.
II) Face milling is preferred over peripheral milling when the flatness and surface finish of the large surface area are the primary
requirements.
Options :
1.    Only conclusion I follows
2.    Only conclusion II follows
3.    Both conclusions I and II follow
4.    Neither conclusion I nor II follows


Question Number : 136 Question Id : 441009679824 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Select the option that is correct regarding the following two statements labelled Assertion (A) and Reason (R).

Assertion: In ECM, the principle of electrolysis is used to remove metal from the work piece.
Reason: The principle of electrolysis is based on Faraday's Law of electrolysis.
Options :
1.    Both A ad R are true and R is the correct explanation of A.
2.    Both A ad R are true but R is not the correct explanation of A.
3.    A is true but R is false.
4.    A is false but R is true.


Question Number : 137 Question Id : 441009679825 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66

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1.


2.


3.


4.



Question Number : 138 Question Id : 441009679826 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 139 Question Id : 441009679827 Question Type : MCQ
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Options :

1.


2.


3.


4.



Question Number : 140 Question Id : 441009679828 Question Type : MCQ
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2.


3.


4.



Question Number : 141 Question Id : 441009679829 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
In which test, applicant's cleverness to work with his hands and fingers is checked, when the job requires the skillful use
of one's hands & body?
Options :
1.


2.


3.


4.



Question Number : 142 Question Id : 441009679830 Question Type : MCQ
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Options :
1.


2.


3.

4.



Question Number : 143 Question Id : 441009679831 Question Type : MCQ
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2.


3.


4.



Question Number : 144 Question Id : 441009679832 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
In which wage incentive plan does the bonus increase with the increase in efficiency?
Options :
1.


2.


3.


4.



Question Number : 145 Question Id : 441009679833 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66


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1.


2.


3.


4.



Question Number : 146 Question Id : 441009679834 Question Type : MCQ
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2.


3.


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Question Number : 147 Question Id : 441009679835 Question Type : MCQ
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2.


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Question Number : 148 Question Id : 441009679836 Question Type : MCQ
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2.


3.


4.

Question Number : 149 Question Id : 441009832026 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66
Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R).

Assertion (A): A good plant layout leads to increased worker satisfaction and reduced supervision.
Reason (R): A good plant layout eliminates the need for preventive maintenance in the facility.
Options :
1.   Both A and R are true, and R is the correct explanation of A
2.   Both A and R are true, but R is not the correct explanation of A
3.   A is true, but R is false
4.   A is false, but R is true


Question Number : 150 Question Id : 441009679838 Question Type : MCQ
Correct Marks : 2 Wrong Marks : 0.66




Options :

1.


2.


3.


4.