UKPSC AE 2013: Uttarakhand Assistant Engineer (AE) Exam, AE Agricultural Engineering (Paper-I)
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AGRICULTURAL ENGINEERING (PAPER - I)
1. Brine is solution of:—
(a) Sodium chloride in water (b) Sugar + Magnesium chloride in water
(c) Calcium chloride in water (d) None of the above
2. In rice polishing is done for the following job:—
(a) A coating is applied on the outer surface of brown rice
(b) A layer of bran is removed form brown rice
(c) A layer of starch is removed
(d) Only husk is removed
3. The thermal destruction of micro organisms can be expressed as following where:—
N = Viable organism at any time
N0= Organism present initially
t, k = Constants
dN dN
(a) — = - kN2 (b)
dt
dN
(c) =k (d) None of the above
dt
4. Which of the following process is used to separate liquids having different boiling points:—
(a) Crystalization (b) Fractional distillation
(c) Evaporation (d) Fractional crystallization
5. The bimetal thermometers are used at temperature rage of:-
(a) 500°C to -12°C (b) 500°C to -185°C
(c) 538°C to -185°C (d) 53 8°C to -285°C
6. Types of liquid — liquid emulsion is:—
(a) Milk (b) Water
(c) Sugarcane juice (d) Oil
7. Necessary hopper slope angles to achieve reliable mass flow is:—
(a) 30°-40° (b) 40°-50°
(c) 60°-70° (d) None of the above
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8. To prevent spoilage, silage should be removed at the rate of—
(a) 5 cmlday (b) 10 cmlday
(c) 15 cm/day (d) 20 cmlday
9. Pressure drop in fluid flow through granular material is best estimated by:—
(a) Black - Kozney equation (b) Burke - Plummer equation
(c) Ergun equation (d) Fourrier
10. Rat proofing cones are provided in grain storage structures at a height of—
(a) 0.9m (b) 1.2m
(c) 1.5m (d) 1.8m
11. Safe moisture content of paddy for storage over one year is:—
(a) 10% (b) 11%
(c) 12% (d) 13%
12. Angle of repose of wheat grain falls in the range of:—
(a) 18°-20° (b) 23°-28°
(c) 30°— 40° (d) 330440
13. In cold storage, apples can be safely stored for the following period:—
(a) 5 months (b) 10 months
(c) 15 months (d) 20 months
14. Froude number is the ratio between:—
(a) Inertia force to viscous forces (b) Inertia force to gravity force
(c) Inertia force to shear force (d) Gravity force to inertia force
15. Height of instrument method is used for determination of:—
(a) Reduced level (b) Discharge
(c) Flow velocity (d) Back bearing
16. A pump may fail to prime due to:—
(a) Air leakage in suction line or pump
(b) Foot value may be leaking
(c) Leakage in rotary shaft seals
(d) All of the above
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17. Spread footing is that which support the following:—
(a) Wall and column (b) Wall only
(c) Column only (d) None of the above
18. Direct ranging in survey is done:—
(a) When one line overlap into other
(b) When two ends of survey line are inter visible
(c) When two ends are not visible
(d) None of the above
19. Seepage force has the direction:—
(a) Upward side (b) Downward side
(c) In direction of flow (d) Opposite direction of flow
20. The shape of rotary and gyratory screen are generally:—
(a) Triangular (b) Circular or rectangular
(c) Trapezoidal (d) None of the above
21. An "Archimedean screw", is device used for:—
(a) To tight a screw (b) To measure electric current
(c) To lift water (d) To lift earth material
22. For a given cross sectional area the hydraulic radius will increase with:—
(a) Increase in wetted perimeter (b) Decrease in wetted perimeter
(c) Increase in turbulence of flow (d) Decrease in turbulence of flow
23. Elbow joints are generally used to:—
(a) Increase the pressure (b) Reduce flow
(c) Increase flow (d) Reduce pressure
24. Curvature of the earth is taken into account in surveying when the extent of the area is more
than:—
(a) 50 km2 (b) 100 km2
(c) 250 km2 (d) None of the above
25. In order to avoid the tendancy of separation at the throat in a venturimeter, the ratio of dia at
throat to that of the pipe should:-
1 1 1 1
(a) j-to1 (b)
1 1 1 3
(c) —to- (d) tO
4 3
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26. Which of the following is not the characteristic of centrifugal pump:—
(a) Capacity is inversely proportional to speed
(b) Horse power is the function of capacity, head and efficiency of pump
(c) Smooth and even flow
(d) Adaptive to high speed operation
27. Pump is operating but not delivering water, possible causes are:—
(a) Pump head is too high (b) Rotation of driver is incorrect
(c) Pump speed is too low (d) All of the above
28. About 90% of full strength of concrete is achived after curing of:—
(a) 7 days (b) 14 days
(c) 21 days (d) 28 days
29. The chain with 100 links and 100 feet length is known as:—
(a) Gunter's chain (b) Engineer's chain
(c) Metric chain (d) None of the above
30. The survey in which curvature of the earth is considered is known as:—
(a) Chain survey (b) Aerial survey
(c) Compass survey (d) None of the above
31. The longest chain line in chain surveying is called:-
(a) Check line (b) Tie line
(c) Base line (d) All above three
32. Errors in surveying are:-
(a) Instrumental error (b) Personal error
(c) Measurement error (d) All of the above
33. The bearing of line taken in the direction of opposite to the progress of work is known as:-
(a) Fore bearing (b) Back bearing
(c) Whole circle bearing (d) None of the above
34. Amongst various land levelling methods, the most common method is:-
(a) Plane method (b) Darcy method
(c) Contour adjustment method (d) Plane inspection method
35. The volume of earthwork in land levelling can be computed by:-
(a) Trapezoidal rules (b) Prismoidal method
(c) End — area method (d) Both (a) and (b)
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36. The permissible depth of earthwOrk under land levelling work is about:-
(a) ±3cm (b) ± 4.5 cm
(c) ± 5.0 cm (d) ± 10.0 cm
37. Orifice meter is used to measure:-
(a) Roughness in pipes (b) Roughness in open channels
(c) Flow in open channels (d) Flow in pipes
38. The depth from which the liquid has to be lifted by pumps is known as:-
(a) Suction head (b) Delivery head
(c) Velocity head (d) Static head
39. Relation betweenspecific speed (N), discharge (Q). Head (H) and velocity (N) for a pump
is given by:-
N= 2N.J
(a) N=y (b)
(c) Na— H (d)
H"
40. If Froude number of flow is 'F' inflow and outflow depths are y1 & y2, then the jump
formula will be:-
Z.L=i(',JI + 8F2 _l)
2. I y1 2
=(1+8F2 4) xL!l+8F2 4)
y1 2 y1 2
41. When flow parameters change with time but remain constant with space the flow is called
as:-
(a) Unsteady uniform flow (b) Steady uniform flow
(c) Steady non-uniform flow (d) Unsteady non-uniform flow
42. A submersible pump may be:-
(a) Single stage pump (b) Multi stage pump
(c) Centrifugal pump (d) Both (a) and (b)
43. The high moisture grain should be kept in:-
(a) Air tight structure (b) Aerated structure
(c) Pucca kothi (d) Gunny bags in closed room
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44. Most commonly used storage structure by Food Corporation of India in India is:-
(a) Pusa bins (b) CAP storage
(c) Hapur bins (d) None of the above
45. Density of water is:-
(a) 1000 kg/rn3 (b) 500 kg/rn3
(c) 1500kg/rn3 (d) 2000 kg/rn3
46. LSU dryer was developed at:-
(a) London State University (b) Ludhiana State University
(c) Lucknow State University (d) None of the above
47. Specific energy diagram is plotted between specific energy and depth of flow for:-
(a) Variable discharge (b) Constant discharge
(c) Constant Froude number (d) None of the above
48. Maximum recommended air temperature for drying of wheat is:-
(a) 20°C (b) 40°C
(c) 60°C (d) 90°C
49. Desirable temperature for safe storage of potato is:-
(a) -4°C (b) 8°C
(c) 12°C (d) None of the above
50. Which of the following is not a type of fluid flow?
(a) Steady (b) Direct
(c) Laminar (d) Compressible
51. In the cold storage, the storage temperature is normally:-
(a) -1°C to 10°C (b) 15°Cto25°C
(c) 30°C to 40°C (d) 45°C to 55°C
52. Hullers are used to :-
(a) Boiling of rice (b) Remove husk from paddy
(c) Grinding of rice (d) Storage of rice
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53. Unit of refrigeration is:-
(a) Quintal (b) Gram
(c) Kg (d) None of the above
54. One hectare is equal to:-
(a) 1000 square-rn (b) 100 square-rn
(c) 100000 square-rn (d) None of the above
55. Fore sight is also known as:-
(a) Positive sight (b) Minus sight
(c) Intermediate sight (d) Vertical sight
56. Reduced level of a point is its height or depth above or below:-
(a) The ground surface (b) The assumed datum
(c) The line of collimation (d) Both (a) and (b)
57. Hygrophilic soils are those:-
(a) which attract water (b) which do not attract water
(c) which transmit water (d) which produce water
58. Froude number for a triangular channel is given as:-
vh V
(a) (b) F= jgY
F= ..jgY
v v2
(c) (d)
F = jgA/Y F = ,JgY
59. In building material RCC stands for:-
(a) Revised cost calculation (b) Revised construction cost
(c) Reinforced central construction (d) None of the above
60. For slabs and beams, the following grade of concrete mix generally used:-
(a) 1:3:6 (b) 1:4:8
(c) 1: 5: 10 (d) None of the above
61. A laminar flow is associated to:—
(a) Low flow velocity
(b) Moving of fluid without lateral mixing
(c) Absence of eddies
(d) All above
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62. A uniform flow generally occurs in:—
(a) An inclined channel of constant bed slope
(b) A level channel
(c) A channel with negative slope
(d) All of the above
63. The Manning's roughness (n) decreases with:—
(a) Decrease in flow depth (b) Increase in flow depth
(c) Decrease in turbulence (d) Both (b) and (c)
64. At the critical flow condition the velocity head is equal to:—
(a) Half of the flow depth
(b) Half of the hydraulic depth
(c) Two times of hydraulic radius
(d) None of the above
65. Dimension of dynamic viscosity are:—
(a) M[:'T (b) ML'!"
(c) MI;'T (d) M'LT
66. Bernoulli's equation is applicable for:—
(a) Frictionless steady flow (b) Incompressible flow
(c) Ideal flow (d) Both (a) and (b)
67. A trapezoidal weir is said to be cipolettie when its side slope is:—
(a) tan(0/2)=1/4 (b) 00=300
(c) sine = 1/4 (d) None of the above
68. Frictional head loss in a pipe is directly proportional to:—
(a) Length of pipe (b) Diameter of pipe
(c) Both of the above (d) None of the above
69. Current meters are used to determine:—
(a) Flow type (b) Flow turbulence
(c) Flow direction (d) Flow velocity
70. Seepage force always acts in:—
(a) Upward direction (b) Downward direction
(c) In the direction of flow (d) In the opposite direction of flow
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71. The weight of the fluid per unit volume is also called:—
(a) Specific volume (b) Specific weight
(c) Density (d) None of the above
72. The dynamic viscosity of a fluid expressed as 'poise' equals to:—
(a) 10 Newton second per m2 (b) 1 Newton second per m2
(c) 1 Newton - meter per second (d) 0.1 Newton - second per m2
73. The flow is said to be turbulent if the Reynold number in a pipe is:—
(a) 5000 (b) 1800
(c) 1500 (d) 1000
74. Bernoulli's equation is related to:—
(a) Mass conservation (b) Energy balance
(c) Heat conservation (d) Water conservation
75. Ratio of buoyant forces to the viscous forces of the fluid flow is known as:—
(a) Prandit number (b) Grashof number
(c) Reynolds number (d) None of the above
76. Friction factor is important parameter particularly in:—
(a) Laminar flow (b) Turbulent flow
(c) Viscous flow (d) Vertical flow
77. Venturimeter is used to measure flow of fluids in pipes when pipe is
(a). Horizontal (b) Vertical downward
(c) Yertical upward (d) In any position
78. Under open flow conditions, the hydraulic jump is formed when the Froude number is:—
(a) Equal to one (b) More than one
(c) Less than one (d) None of the above
79. At critical :depth of flow :—
(a) Specific energy is minimum (b) Specific energy is maximum
(c) Both (a) and (b) ,(d) None of the above
80. If a fluid which possess some viscosity is known as:—
(a) Real fluid (b) Imaginary fluid
(c) Specific Iluid (d) None of the above
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81. A large Reynold's number is indication of:—
(a) Highly turbulent flow (b) Laminar flow
(c) Steady flow (d) Smooth and stream line flow
82. The flow in the open channel may be characterized as laminar flow when Reynold's number
is:—
(a) Re < 500 (b) Re > 2000
(c) Re> 1000 (d) Re> 800
83. One stoke is equal to:—
(a) 1 m2/s (b) 0.1 m21s
(c) I x 10.2 m2/s (d) I x 10 m2/s
84. The velocity of water through a circular channel will be maximum when the depth of water
is:—
(a) 0.95 times the diameter of channel (b) 0.81 times the diameter of channel
(c) 0.67 times the diameter of channel (d) 0.50 times the diameter of channel
85. Absolute pressure is equal to:—
(a) Gauge pressure — Atmospheric pressure
(b) Gauge pressure + Vacuum Pressure
(c) Atmospheric pressure + Gauge pressure
(d) Atmospheric pressure - Gauge pressure
86. Hydrostatic pressure at a point 'h' meter below the top surface of a liquid with specific
weight '0)' will be:—
(a) w/h (b) 0)+h
(c) coh (d) wh2
87. The dimension of specific gravity are:—
(a) MLT (b) ML2T
(c) ML-' (d) None
88. The hydraulic radius for a filly flowing pipe of 1 meter diameter will be:—
(a) 1 meter (b) 0.5 meter
(c) 0.25 meter (d) 2.0 meter
89. Manning's formula for mean flow velocity is:—
(a) V=CJj (b) V = .J8gRS If
(c) V= IR3/2ShI2 (d) V=R2h13Sh/2
n n
where V = velocity of flow, rn/s
R = hydraulic radius, m
S = slope
n, f, g, c = constants
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90. The Force per unit area in fluids is exerted:—
(a) In all directions (b) Lower depths
(c) Horizontal ways (d) Upward
91. The length of Gunter's chain is:—
(a) 100 feet (b) 50 feet
(c) 66 feet (d) 75 feet
92. Length of a metric chain is:—
(a) im (b) 20m
(c) 50m (d) lOOm
93. The bench mark fixed at the end of a day's of survey work is called:—
(a) Permanent bench mark (b) Arbitrary bench mark
(c) Temporary bench mark (d) None of the above
94. The imaginary line joining the geographical North and South is known as:—
(a) Geographical meridian (b) Magnetic meridian
(c) Arbitrary meridian (d) All of the above
95. The bearing of line AB is 40° 26' 10" and bearing of AC is 140° 30' 40". What will be angle
between lines AB and AC?
(a) 180° 56' 50" (b) 130° 26' 10"
(c) 100° 4' 30" (d) 230° 4' 30"
96. Alidade is an important instrument used in which survey?
(a) Plane table survey (b) Chain survey
(c) Theodolite survey (d) Compass survey
97. Instrument used for measurement of areas of figure having irregular boundaries are:—
(a) Anemometer (b) Planimeter
(c) Rolling meter (d) All of the above
98. Manning's formula is used to determine flow velocity in which type of flow:—
(a) Rapidly varied flow
(b) Non-uniform flow
(c) Uniform flow
(d) Critical flow
ESE-lO (22) Series-B
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99. At critical state of flow the kinetic energy of flow is equal to:—
(a) One fourth of its potential energy (b) One half of its potential energy
(c) One third of its potential energy (d) One fifth of its potential energy
100. In general, the curing of concrete should be continued for the duration of:—
(a) 1 to 2 days (b) 3 to 5 days
(c) 15 to 20 days (d) 7to10days
101. The hydraulic radius (R) of a channel in terms of its wetted perimeter (P) and cross sectional
area (A) is given on:—
(a) RAxP (b) R=P/A
(c) R=A/P (d) R=A2 /P
102. Hydraulic jump formula is based on:—
(a) Froude number of flow (b) Reynold number of flow
(c) Critical number of flow (d) Specific number of flow
103. For an average size family of five members including two adults and three children, the
capacity of septic tank should be kept about:—
(a) 1.8 cubic m (b) 2.8 cubic m
(c) 3.8 cubic m (d) 4.8 cubic m
104. Which of the following is not a method of seasoning of wood?
(a) Water seasoning (b) Air seasoning
(c) Pneumatic seasoning (d) Kiln seasoning
105. In a mortar, the common ratio of cement to sand is:—
(a) 1:3 (b) 1:6
(c) 1:4 (d) 1:8
106. The section factor (Z) for uniform flow condition is given as:—
(a) Z=AR"3 (b) =AR 3
(c) AR3"5 (d) 3 = AR2'3
A = Cross sectional area
R = Hydraulic radius
107. Surkhi as a building material can be used as a substitute for:—
(a) Sand (b) Steel
(c) Cement (d) Lime
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108. Compressive strength of concrete generally ranges between:—
(a) 50 — 100 kg/cm2 (b) 150-200 kg/cm2
(c) 300 — 700 kg/cm2 (d) 800 — 1000 kg/cm2
109. Pure lime contains:—
(a) 95% or more Calcium oxide
(b) More than 25% Magnesium oxide
(c) Less than 50% Calcium oxide
(d) Less than 25% Magnesium oxide
110. The Bio chemical oxygen demand (BOD) of domestic sewage ranges from:—
(a) 100 — 200 mg/litre (b) 150-200 mg/litre
(c) 250 —400 mg/litre (d) 500 — 1000 mg/litre
111. Flush doors are becoming more popular due to:—
(a) Greater durability (b) Greater weight
(c) Better look (d) None of the above
112. The following type of mortar may be used in brick masonary:—
(a) Lime mortar (b) Mud mortar
(c) Cement — lime mortar (d) All of the above
113. Rapid hardening Portland cement is manufactured by:—
(a) Fusing together lime stone and shale
(b) At extremely high temperature cement clinker's
(c) Gypsum is added in small quantities to this clinker
(d) All of the above process
114. All natural channels are generally:—
(a) Non-prismatic (b) Prismatic
(c) Ideal (d) None of the above
115. D.P.0 is provided throughout the width of plinth for the entire building to prevent:—
(a) Heating of building (b) Cooling of the building
(c) To prevent dampness in the building (d) Stop the theft
116. A good building stone should have:—
(a) Strength (b) Good appearance and color
(c) Resistance to fire (d) All above three
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117. A fluid flow is said to be ideal or perfect when it has:-
(a) No frictional effect between moving fluid
(b) Viscosity
(c) Turbulence
(d) Temperature effect
118. Which one of the following is fluidised solid?
(a) Flour (b) Fruit juice
(c) Honey (d) Carbon di oxide
119. At critical flow condition, the section factor can be expressed as:-
(a) z = Q21 Ji (b) z = Q"J
(c) Q,'g (d)
Where Q - disharge
g = Acceleration due to gravity
120. The function of the cutting fluid in Lathe machine is to:-
(a) Cool the tool and work piece (b) Provide the lubrication
(c) Improve surface finish (d) All of the above
121. Closed impellor is suitable to handle the liquids of type:-
(a) Viscous (b) Non-viscous
(c) Dense (d) Thin
122. Barbed wire is generally made of wire with gauge of about:--
(a) 8 (b) 10
(c) 12 (d) 14
123. A thin layer of coal tar is applied on the surface of timber for:-
(a) Protection from rains (b) Preservation
(c) Insect-resistance (d) All of the above
124. Farmstead should be located near the source of permanent:-
(a) Road (b) School
(c) Water supply (d) All above three
125. Which one of the following is not the sanitary fittings?
(a) Washbasin (b) Sink
(c) Flushing cistern (d) Dustbin
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126. Static head of a pump is equal to:—
(a) Sum of suction head and delivery head
(b) Suction head
(c) Delivery head
(d) Difference of delivery head and Suction head
127. For steel casting following type of sand is better:—
(a) Medium grain sand (b) Fine grain sand
(c) Coarse sand (d) None of the above
128. Grouting uses grout which is a mixture of—
(a) 1 part cement: 2 part sand : sufficient water
(b) 1 part cement : 3 part sand: 5 part water
(c) 2 part cement: 5 part sand: 10 part water
(d) 2 part cement : 2 part sand: 3 part water
129. Seasoning of timber is done to:—
(a) Make it water proof (b) Add moisture in timber
(c) Heat the timber (d) Expel the moisture from timber
130. Wood for pattern is considered dry when moisture content is:—
(a) Less than 15 percent (b) More than 50 percent
(c) Zero percent (d) Less than 50 percent
131. Semi open impeller is used for:—
(a) Clean water (h) Hot water
(c) Sewage water (d) None of these
132. For which type of pump verticality of tube well is critical:—
(a) Jet pump
(b) Submersible pump
(c) Directly connected centrifugal pump
(d) Reciprocating pump
133. The parameter which is least important for a selection of pump is :—
(a) Discharge (b) Horse power
(c) Head (d) Qualit of water
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134. The relationship to determine break horse power in a centrifugal pump is:—
(a) Water horse power x pump efficiency
(b) Water horse power / pump efficiency
(c) Water horse power + pump efficiency
(d) Pump efficiency / water horse power
135. Water can be lifted from a depth beyond 45 meter by:—
(a) Centrifugal pump (b) Jet pump
(c) Submersible pump (d) None of the above
136. The hand pump used in houses is a type of pump:—
(a) Submersible pump (b) Reciprocating pump
(c) Centrifugal pump (d) Jet pump
137. Practically the suction head of a centrifugal pump should not exceed:—
(a) 8 meters (b) 12.5 meters
(c) 32.5 meters (d) 13.20 meters
138. Nozzle and venturi are main components of:—
(a) Centrifugal pump (b) Jet pump
(c) Reciprocating pump (d) Submersible pump
139. If a chain is too long, the measured distance will be less than actual, then the correction will
be:—
(a) Can be negative or positive (b) Zero
(c) Negative only (d) Positive only
140. Reciprocating pumps are found to be best suited for:—
(a) Low discharge and high heads (b) Low discharge and low heads
(c) High discharge and high heads (d) High discharge and low heads
141. High lift centrifugal pump are generally:—
(a) Multi stage pumps (b) Used in deep wells
(c) Both (a) and (b) (d) Single stage pumps
142. In the centrifugal pump, the liquid enters through:—
(a) Eye of the impeller (b) Delivery pipe
(c) By-pass line (d) None of the above
143. Axial flow pump delivers large quantity of water at:—
(a) High heads (b) Medium heads
(c) Low heads (d) Zero heads
(32) Series-B
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144. Which of the following type of impeller is used for centrifugal pump dealing with mud:—
(a) One side shrouded (b) Two side shrouded
(c) Double action (d) Open from both side
145. Quick sand is a state of:—
(a) Flow (b) Land slide
(c) Land Levelling (d) None of the above
146. Filling water before its operation in a centrifugal pump is called:—
(a) Testing of pump (b) Energizing of pump
(c) Priming of pump (d) All of the above
147. Propeller pumps are used for:—
(a) Low head and low discharge (b) Low head and high discharge
(c) High head and low discharge (d) High head and high discharge
148. If a pump vibrates, the possible reasons may be:—
(a) Misalignment (b) Poor suction conditions
(c) Bearing failure (d) All of the above
149. In centrifugal pumps, the number of vanes made in impeller varies from:-
(a) 3to12 (b) 5 to 10
(c) 10 to 12 (d) 7to 12
150. Handerson's equation is used to determine:—
(a) Critical duration of storage (b) Critical depth of flow
(c) Critical temperature (d) None of the above
151. The vertical height to which the liquid can be raised by the pump above center line of pump
is called:—
(a) Suction head (b) Total head
(c) Discharge head (d) Total differential head
152. Separation of grains by screening is done on the basis of—
(a) Size (b) Colour
(c) Texture (d) Weight
153. Which of the following is not a type of impeller of a centrifi.igal pump:—
(a) Semi-open (b) Closed
(c) Open (d) High speed
ESE-lO (34) Series-B
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1 54. Discharge of reciprocating pump is constant regardless of—
(a) Temperature (b) Speed
(c) Delivery head (d) Suction head
155. Most efficient channel section is:—
(a) Triangular (b) Trapezoidal
(c) Rectangular (d) Semi circular
156. The type of survey in which the shape Of earth is taken into account is called:—
(a) Geodetic survey (b) Curvature surface
(c) Precise survey (d) All above
157. If the moisture content is 20% on wet basis. The moisture content on dry basis will be :—
(a) 5% (b) 15%
(c) 35% (d) 25%
158. In thin layer drying the grain depth is limited up to:—
(a) 20cm (b) 30cm
(c) 40cm (d) 50cm
159. Which of the following is not an EMC model?
(a) Kelvin equation (b) Harkins-Jura equation
(c) Rankine equation (d) Henderson equation
160. Which of the following is not a type of grinder?
(a) Attrition mill (b) Burr mill
(c) Hammer mill (d) Solvent extraction mill
161. In commercial rotary dryers the length of drum is:—
(a) From 3 to 6m (b) From8tollrn
(c) From 13 to 16m (d) From 18 to 21m
162. Which of the following is not a part of a hammer mill?
(a) Rotor (b) Cast iron plates
(c) Hammer (d) Screen
163. The drier which uses the principle of thin layer drying is known as:—
(a) Baffle type dryer (b) Sack dryer
(c) Continuous flow dryer (d) Batch type dryer
164. What will be the equivalent pressure head of kerosene if its specific gravity of 0.81, if water
pressure head is lOOm:—
(a) 123.46m (b) 184.36m
(c) 81.0m (d) 162.Om
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165. Which is not the method for drawing flow nets:—
(a) Analytical method (b) Graphical method
(c) Electrical analogy method (d) Curve fitting method
166. Pitot tube is a simple device used to measure:—
(a) Density of flow (b) Velocity of flow
(c) Type of flow (d) None of the above
167. Post harvest losses of fruits and vegetables in handling is about:—
(a) 35% (b) 40%
(c) 45% (d) 50%
168. For maximum discharge in a circular channel the depth of flow should be equal to:—
(a) 0.70 times diameter (b) 0.95 times diameter
(c) 0.82 times diameter (d) 1.15 times diameter
169. Parboiling of rice before milling is done to:—
(a) Decrease nutritional value (b) No change in nutritional value
(c) Decrease of yield (d) Increase nutritional value
170. The size of the food grains in attrition mill is reduced by:—
(a) Shear and crushing (b) Impact and shear
(c) Impact and crushing (d) Impact only
171. Generally the frozen food are stored at a temperature of :—
(a) 0°C (b) -4°C
(c) -8°C (d) -18°C
172. In a batch type pasteurizer, milk is heated at:—
(a) 61°C for 30 minutes
(b) 61°C for 30 seconds
(c) 40°C for 15 minutes
(d) 40°C for 15 seconds
173. The amount of heat required to raise the temperature of 1gm milk by one degree celsius in
comparison to water is:—
(a) 85% (b) 93%
(c) 107% (d) 100%
174. In a ball mill or pebble mill, most of the size reduction is done by:—
(a) Shearing (b) Cutting
(c) Impact (d) Crushing
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175. Dryers utilizing high gas temperature of 500°C or more. But for short exposure time are
called:—
(a) Fluidized bed dryers (b) Flash diyers
(c) Turbo dryers (d) Drum dryers
176. Hydraulic jump is based on the principle oe-
(a) Energy conservation (b) Velocity conservation
(c) Momentum conservation (d) Turbulence conservation
177. The moisture accumulation in a grain mass stored for a long time when outside environment
is hot, taken place at:—
(a) Top surface (b) Bottom surface
(c) Middle surface (d) Near the walls
178. One atmospheric pressure is equal to:—
(a) 1.0 kg/cm2 (b) 1.0 kg/rn2
(c) 1.0 ton/rn2 (d) 1.0 N/rn2
179. The temperature range for ultra high temperature (UHT) sterilization of milk is:—
(a) 90-100°C (b) 105-115°C
(C) 135 — 150°C (d) None of these
180. Which standard is applied in International trade of agri-food commodities:—
(a) B.I.S. (b) Codex-Alimenta
(c) Agmark (d) None of above
ESE-lO (40) Series-8
Official key not published for this paper.
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Source: Uttarakhand Public Service Commission. Question paper published by Uttarakhand Public Service Commission.