UKPSC JE 2013: Uttarakhand Combined Junior Engineer Selection Examination, JE AGRICULTURAL ENGINEERING (PAPER-I)
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AGRICULTURE ENGINEERING
PAPER-I
1. Fly wheel of the engine helps
(a) to run the engine smoothly
(b) stores energy during power stroke
(c) returns the energy during idle stroke
(d) All of the above
2. Carburettor is found in
(a) Petrol engine (b) Diesel engine
(c) Both of these (d) None of these
3. Biogas plants which are generally used for gas production are generally made of
(a) Bricks (b) Steel
(c) Both of (a) & (b) (d) None of these
4. Solar energy can be converted into
(a) Thermal energy (b) Electrical energy
(c) Mechanical energy (d) All of the above
5. In houses active system of solar energy
(a) uses solar collectors for warming the space
(b) heating is done either by water or air
(c) works on natural convection
(d) both of the (a) & (b)
6. Electricity from solar energy can be produced by
(a) solar power production system (b) solar photo-voltaic cells
(c) Both of the (a) and (b) (d) None of these
7. Wind energy is available in the form of
(a) kinetic energy (b) potential energy
(c) both of the above (a) and (b) (d) None of these
8. Which of the following do not apply in case of wind energy?
(a) Wind energy is variable.
(b) Wind energy is steady.
(c) Wind energy is irregular.
(d) Wind energy is intermittent.
9. Advantages of electrical power over other sources are
(a) highest efficiency
(b) adaptive to varying speeds
(c) adaptable to all farm operations
(d) Both (a) and (b)
10. Depreciation of an IC engine is included in
(a) Fixed cost (b) Variable cost
(c) Both (a) and (b) (d) None of the above
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11. Within a given HP range, the selection of tractor is based on
(a) primary cost (b) resale value
(c) running cost (d) All the above three
12. Manufacture of Massey Fergusson Tractor is
(a) HMT, Pinjore (b) Sonalika, Hoshiarpur
(c) TAFE, Cheimai (d) PTL, Mohali
13. In IC engine, the diameter of cylinder is known as
(a) Bore (b) Stroke
(c) Piston displacement (d) None of the above
14. Main advantages of mechanical power are
(a) requires frequent rest periods (b) available in different sizes
(c) not affected by hot or cold weather (d) Both (b) & (c)
15. Mostly the type of piston pin used is
(a) Semi-floating (b) Floating
(c) Fixed (d) All above three
16. Types of rings used in engine are
(a) compression rings (b) oil rings
(c) Both (a) & (b) (d) None of the above
17. Air cleaner is a part of
(a) Engine lubricating system (b) Engine cooling system
(c) Engine air fuel supply system (d) Hydraulic system
18. In diesel cycle maximum efficiency is obtained with
(a) Early fuel cut-off (b) High compression ratio
(c) Both (a) & (b) (d) None of the above
19. The solar photo-voltaic system include
(a) Solar cell array (b) Battery Bank
(c) Inverter and charge controller (d) All above three
20. A domestic solar water heater of 100 litres per day capacity can save electricity annually
equal to
(a) 500 kWh (b) 1000 kWh
(c) 1500 kWh (d) 2000 kWh
21. Biogas in a biogas digester is produced by chemical process, known as
(a) Pyrolysis (b) Fermentation
(c) Radiation (d) Hydration
22. Production of biogas through anaerobic digestion of biomass depends on
(a) Temperature (b) C : N Ratio
(c) Pressure (d) All above three
23. The useful sun-shine days per year in most part of India are
(a) 250 to 300 (b) 175to230
(c) 200 to 250 (d) None of the above
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24. Gas production in biogas plant is retarded when temperature goes below
(a) 10 °C (b) 15 °C (c) 20 °C (d) 25 °C
25. The best sites for wind are found in
(a) mountains (b) plains
(c) offshores and seacoast (d) None of the above
26. Photo-voltaic solar cells are made of
(a) Silicon (b) Carbon (c) Gun metal (d) Silver
27. Biogas is a mixture of
(a) CO2 & H2 (b) CO2 & H20 (c) CO2 & CH (d) All three
28. To feed even the smallest size of biogas plant, the minimum number of cattle requirement is
(a) 2 to 4 (b) 4 to 6 (c) 6 to 8 (d) 8 to 10
29. In bucket elevator, the material discharge chute is situated at
(a) Bottom (b) Top
(c) Lower half but not at bottom (d) Upper half but not at top
30. During dehydration of vegetables, the temperature of dehydration should be
(a) 40 to 50 °C (b) 60 to 70 °C (c) 80 to 90 °C (d) 100 to 115 °C
31. Content of starch (in percent) in maize is approximately
(a) 50 (b) 60 (c) 70 (d) 80
32. The percent of oil in soyabean is about
(a) 8-10% (b) 18-20% (c) 28-30% (d) 38-40%
33. Gravity separator work on the principle of
(a) Gravity (b) Drag
(c) Both (a) and (b) (d) None of the above
34. Grinding is a process of
(a) Drying (b) Polishing
(c) Size reduction (d) Packaging
35. The shape of trough in screw conveyor is used as
(a) U-shaped (b) L-shaped
(c) V-shaped (d) J-shaped
36. Fruits and vegetables are preferably dried in a
(a) Spray drier (b) Fluidized bed drier
(c) Freeze drier (d) Cabinet drier
37. Soyabean is mostly used in India for production of
(a) Edible oil (b) Pulses
(c) Milk substitutes (d) Processed foods
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38. Modem flour mills for wheat milling are
(a) Disc type (b) Attrition type
(c) Under runner type (d) Roller type
39. LSU type dryer was developed in
(a) India (b) England (c) USA (d) Canada
40. The working capacity of hydraulic power operated land leveller is about
(a) 60— 70 m3/day (b) 90 — 110 m3/day
(c) 110 — 160 m3/day (d) None of the above
41. The function of seed drills is to sow seeds
(a) in furrows (b) at proper depth
(c) at uniform rate (d) All above three
42. Bulldozer is used for
(a) cleaning forests (b) pushing soil upto small distances
(c) filling big ditches/channels (d) All above three
43. Inclined plate planter is used for sowing of
(a) Cotton (b) Legumes
(c) Groundnut (d) All above three
44. Size of planter is equal to
(a) No. of rows x row spacing (b) No. of rows x depth of planking
(c) Both (a) and (b) (d) None of the above
45. The prime mover used in power thresher is
(a) Electric motor (b) Engine (c) Tractor (d) All above three
46. Which of the following components are parts of threshing cylinder?
(a) Concave (b) Rasp bar (c) Spikes (d) Both (b) and (c)
47. Hand rotary dusters are more suitable for plant height upto
(a) 3m (b) 5m (c) 7.5m (d) lOm
48. In crop production the first operation performed by the farmers is
(a) Planting of seed (b) Tillage
(c) Intercultural (d) Fertilizer application
49. A device which is used to store energy in hydraulic system is known as
(a) Motor (b) Cylinder (c) Accumulator (d) Pump
50. Primary function of lubrication is to reduce
(a) Friction (b) Wear (c) Power loss (d) All these
51. A machine which cuts, thresh, clean and collect the grain simultaneously while moving
through the field is known as
(a) Reaper (b) Combine
(c) Power thresher (d) None of the above
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52. The main cause of quality deterioration of food is
(a) Climate (b) Microorganisms
(c) Rats (d) All of the above
53. Why do we use intercropping?
(a) Suppression of weed (b) Reduction in plant disease
(c) Stability in more yield (d) All of these
54. In ball mill the size reduction is done by action of
(a) shearing (b) cutting (c) impacting (d) crushing
55. Tidal energy is most popular and feasible method of producing power by
(a) River (b) Well (c) Sea (d) Tank
56. On an average, one ton of paddy contains bran about
(a) 30 kg (b) 40 kg (c) 45 kg (d) 50 kg
57. Dan-ieus type rotor mill is example of which type of wind mill?
(a) Vertical axis high velocity (b) Vertical axis low velocity
(c) Horizontal axis high velocity (d) Horizontal axis low velocity
58. Biogas is a flammable gas and its heating value is approximately
(a) 17,925 J/m3 (b) 29,874 JIm3 (c) 19,725 JIm2 (d) 92,874 JIm2
59. Solar energy can be utilized by the application of solar cells to produce
(a) DC electricity (b) AC electricity
(c) DC & AC electricity (d) None of the above
60. Sun drying is an example of which type of drying?
(a) Convective (b) Conductive
(c) Radiation (d) None of the above
61. Energy required to grind any material is expressed by
(a) Fick's law (b) Kick's law (c) Newton's law (d) Stokes law
62. The first practical solar cell was made in the year
(a) 1954 (b) 1860 (c) 1760 (d) 1800
63. Which of the following combination of metals are used to make brass?
(a) Copper and Zinc (b) Zinc and Tin
(e) Copper and Tin (d) Tin and Antimony
64. The process of removing moisture from the food product is called
(a) Canning (b) Sterilization
(c) Pasteurization (d) Dehydration
65. World Food Day is celebrated on which date?
(a) 15 July (b) 20 July (c) 16 October (d) 22 October
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66. Parboiling of rice includes the action of
(a) Water and temperature (b) Water and chemical
(c) Oil and chemical (d) None of the above
67. Respiration of food release the gas
(a) Oxygen (b) Carbon monoxide
(c) Carbon dioxide (d) Nitrogen
68. The maximum produced vegetable crop in India is
(a) Potato (b) Tomato (c) Brinjal (d) Okra
69. Angle of repose for wheat grains is about
(a) 15° (b) 200 (c) 25° (d) 30°
70. The beam of a bullock-drawn cane crusher is attached to
(a) Crushing roller (b) Extraction roller
(c) King roller (d) Fly wheel
71. Shellers are used in the processing of
(a) Wheat (b) Maize (c) Soyabean (d) Paddy
72. A wind mill cannot be used for the purpose of
(a) Water lifting (b) Ploughing
(c) Power generation (d) Chaff cutting
73. Wind speed is measured by
(a) Anemometer (b) Wind vane (c) Photometer (d) Rotavator
74. Solar energy reaches Earth's surface in about
(a) 4 minutes (b) 8 minutes (c) 10 minutes (d) 20 minutes
75. Which of the following is not a type of biogas plant?
(a) KVIC Model (b) Deenbandhu Model
(c) Gandhi Model (d) Fixed Dome Model
76. Biogas contains maximum amount of
(a) Oxygen (b) Nitrogen (c) Hydrogen (d) Methane
77. Anaerobic digestion of organic matter to produce biogas is completed in
(a) 2-stages (b) 3-stages (c) 4-stages (d) 6-stages
78. The draft force applied on the implement by a tractor is measured by using
(a) Dynamometer (b) Altimeter
(c) Differential (d) Draft meter
79. Which of the following is a part of the cooling system for an engine?
(a) Radiator (b) Fly wheel (c) Injector (d) Clutch
80. Cast iron is an alloy of
(a) Iron and carbon (b) Iron and cobalt
(c) Iron and zinc (d) Copper and zinc
81. Which form of iron is obtained from the blast furnace?
(a) Pig iron (b) Wrought iron (c) Cast iron (d) Mild steel
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82. Which of the following is good for making nut-bolts?
(a) Cast iron (b) Pig iron
(c) Wrought iron (d) High carbon steel
83. Farm tractors used in India do not have
(a) Carburettor (b) Gearbox
(c) Differential (d) Clutch
84. To maintain a constant speed of engine under varying load conditions, the engines are
provided with
(a) Nozzle (b) Governor (c) Gear (d) Thermostat
85. Which of the following part is not connected to the piston of an engine?
(a) Rings (b) Gudgeon pin
(c) Connecting Rod (d) Fly wheel
86. Advantages of electrical power over other sources are
(a) Highest efficiency (b) Adaptive to varying speeds
(c) Adaptive to all fann operations (d) Both (a) and (b)
87. In 24 hour, water absorption by volume is maximum in
(a) Limestone (b) Granite (c) Gneiss (d) Slate
88. When water is added to cement
(a) chemical reaction starts (b) heat is absorbed
(c) heat is generated (d) None of the above
89. Which is the weakest concrete?
(a) 1:2:4 (b) 1:3:6 (c) 1:4:8 (d) 1:5:10
90. The specific gravity of light diesel oil is
(a) 0.82 (b) 0.85 (c) 0.92 (d) 0.95
91. Which of the following is not a source of non-conventional energy?
(a) Geothermal (b) Biomass
(c) Wind energy (d) None of the above
92. In India parboiled rice is mostly produced and consumed in
(a) Northern region (b) Southern region
(c) Eastern region (d) Western region
93. In India primary source of energy is
(a) Fossil (b) Coal (c) Petrol (d) Diesel
94. Bio ethanol is primarily produced from fermentation of
(a) Rice grain (b) Sugarcane molasses
(c) Grapes (d) None of the above
95. Most cereal food contain mainly
(a) Fat (b) Vitamin (c) Carbohydrate (d) Protein
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96. Annual depreciation of a machine is included in
(a) Fixed cost (b) Variable cost e
(c) Hiring cost (d) None of the above
97. The size of an M.B. plough is expressed in terms of its
(a) Width of cut (b) Length of share
(c) Depth of cut (d) None of the above
98. Which one from the below is a multipurpose tool?
(a) Indigenous plough (b) M.B. Plough
(c) Cultivator (d) Multipurpose tool bar carrier
99. Which type of seed drill is mostly used in our country?
(a) Cup feed type (b) Variable orifice type
(c) Disc type (d) Flutted roller type
100. A power tiller is most suited for
(a) Transport work (b) Stationary operation
(c) Rotary cultivation (d) None of the above
101. An olpad thresher is operated
(a) by a tractor (b) by a pair of bullocks
(c) by an electric motor (d) manually
102. Application rate of sprayer is affected by
(a) Rate of discharge (b) Number of nozzle
(c) Forward speed (d) All of the above
103. Reaper is used for
(a) land preparation (b) sowing
(c) harvesting (d) threshing
104. Farming operation which requires maximum energy:
(a) Harvesting (b) Interculture
(c) Sowing (d) Tillage
105. Puddling is done to
(a) Reduce percolation of water (b) Level the field
(c) Kill weeds (d) Increase percolation of water
106. One hectare equals to
(a) 100 sq.m (b) 1000sq.m
(c) 10000 sq.m (d) 100000 sq. m
107. Vertical suction of a plough influences
(a) Pulverization (b) Depth of cut
(c) Width of cut (d) Direction of pull
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108. Two primary tillage equipment are
(a) Mould board plough and disc harrow (b) Disc plough and disc harrow
(c) Disc harrow and cultivator (d) M.B. plough and sub-soiler
109. The size of a seed drill is expressed by
(a) working capacity
(b) No. of furrow opener
(c) spacing between furrow opener
(d) No. of furrow opener and spacing between them
110. Increasing the cylinder speed results in
(a) increase threshing efficiency (b) increase seed damage
(c) reduce cylinder loss (d) All of the above
111. Tilt angle in a disc plough varies from
(a) 5 — 10 degree (b) 10 — 15 degree
(c) 15 —25 degree (d) 25 —30 degree
112. An indigenous plough is
(a) a secondary tillage implement (b) a wet-land puddler
(c) a multi-purpose implement (d) a primary tillage implement
113. Gears are used for
(a) changing the speed of rotation (b) changing direction of shafting
(c) changing direction of rotation (d) All of the above
114. Which of the following tractor has the air cooled engine?
(a) Eicher (b) HMT
(c) Mahindra (d) Ford
115. Inflation pressure of front wheels of tractor (2 wheel drive)
(a) 0.8 — 1.2 kg/cm2 (b) 1.2 —2.0 kg/cm2
(c) 2.0-2.5kg/cm2 (d) >2.5kg/cm2
116. Connecting rod generally have
(a) I—shape (b) T-shape
(c) Angle shape (d) Flat shape
117. The estimated useful life of diesel engine is
(a) 8 years (b) 10 years
(c) 12 years (d) 14 years
118. The common firing order of a 4 stroke 4 cylinder engine is given as
(a) 1-2-3-4 (b) 1-3-2-4 (c) 1-3-4-2 (d) 1-4-3-2
119. The first tractor plant in India was set up by
(a) Hindustan (b) Ford (c) HMT (d) Eicher
120. Compression ratio of diesel engine is
(a) 5:1 (b) 5:ltoll:1(c) ll:ltol4:1 (d) 14:lto2l:1
121. A cylinder block of tractor engine is normally made of
(a) Cast Iron (b) Cast steel
(c) Heat treated steel alloy (d) Spring steel
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122. B.H.P. of an engine indicates
(a) Power at PTO pulley (b) Power in cylinder
(c) Power on fly wheel (d) Frictional power
123. Engine oil is changed in tractor after
(a) 80 hours (b) 120 hours (c) 200 hours (d) 300 hours
124. Which of the following has most crucial role in promoting farm mechanization?
(a) Electric motor (b) Power tiller
(c) Diesel engine (d) Tractor
125. Variable speed governors are used on
(a) Tractor engine (Diesel) (b) Stationary engine (Diesel)
(c) Petrol engine (d) None of above
126. In combine, the length of rasp bar type cylinder varies from
(a) 2.0-2.5m (b) 1.5-2.Om
(c) 1.4-1.5m (d) Lessthanl.4m
127. Speed reduction in a tractor at
(a) Differential (b) Final drive
(c) Gear box (d) None of above
128. A connecting rod of a tractor engine is made of
(a) Forged steel (b) Mild steel
(c) Cast steel (d) Cast iron
129. Stroke bore ratio for tractor engine is
(a) 1.25 (b) 1.45 (c) 1.75 (d) 2.00
130. The power generated in a windmill
(a) depends on the height of tower.
(b) depends on wind velocity.
(c) can be increased by planting tall trees close to tower.
(d) is more in rainy season.
131. Minimum wind velocity for working of a wind mill is
(a) 5 kmph (b) 12 kmph (c) 25 kmph (d) 50kmph
132. Optimum solid-water ratio for highest gas production is
(a) 1: 10 (b) 1: 15 (c) 1: 20 (d) 1:25
133. Which of the following is a non-renewable source of energy?
(a) Fossil fuels (b) Wood (c) Sun (d) Wind
134. Where is the largest solar plant of India located?
(a) Odisha (b) Rajasthan (c) Gujarat (d) Maharashtra
135. Main combustible constituent of biogas is
(a) Carbon dioxide (b) Ethane
(c) Butane (d) Methane
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136. The main component of a biogas plant is
(a) Digester (b) Gas holder
(c) Sluny mixing tank (d) All of above
137. Which is the ultimate source of energy?
(a) Water (b) Sun
(c) Fossils fuels (d) Uranium
138. The rate of doing work is known as
(a) Energy (b) Power
(c) Horse power (d) None of the above
139. The work which requires pulling or drawing such as ploughing, seeding/planting etc. is
known as
(a) tractive work (b) stationary work
(c) both of the above (d) None of the above
140. A normal human being develops about
(a) 1HP (b) 0.50 HP
(c) 0.30 HP (d) 0.10HP
141. Power transmission from the source of power to the machines is done by the following
system:
(a) Pullies and belts (b) Flat belts
(c) V-belts (d) All of the above
142. The simplest form of dynamometer for measuring the draw bar power is
(a) Hydraulic dynamometer (b) Spring dynamometer
(c) Distortion type dynamometer (d) Strain gauge dynamometer
143. Steam engines are
(a) Internal combustion engines (b) Semi-internal combustion engines
(c) External combustion engines (d) None of the above
144. Piston position in the engine when it reaches the bottom is known as
(a) Crank and dead centre (b) Bottom dead centre
(c) Both of the above (a) & (b) (d) None of the above
145. In diesel engine, the heat is taken in at
(a) constant pressure (b) constant volume
(c) both (a) & (b) (d) None of the above
146. The amount of water vapour present in a unit weight of dry air under a given set of
conditions is known as
(a) humidity (b) absolute humidity
(c) relative humidity (d) None of the above
147. The temperature at which a mixture of air and water vapour has to be cooled at constant
humidity to make it saturated is known as
(a) Dry bulb temperature (b) Wet bulb temperature
(c) Dew point temperature (d) Ambient temperature
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148. A good rice huller does the following work:
(a) Removes the husk from the paddy (b) Does not break the rice o
(c) Produce good quality rice (d) All of the above
149. There is high percentage of breakage of rice grain in
(a) Disc type hullers (b) Roller type hullers
(c) Both (a) & (b) (d) None of the above
150. The process of husking or dehusking is also known as
(a) Shelling (b) Bruising
(c) Scalping (d) None of the above
151. The first phase of seed processing consists of
(a) scalping (b) debearding
(c) hulling (d) All of the above
152. The second phase of processing in which removal of weed seeds, broken seeds and inert
materials are involve, is done by
(a) Air screen (b) Air screen cleaner
(c) Aspirator (d) Scalper
153. When the paddy is shelled, brown coloured rice is obtained, which is known as
(a) Par boiled rice (b) Brown rice
(c) Both (a) & (b) (d) None of the above
154. Average weight of 1000 wheat grains ranges between
(a) 30-35gms (b) 35-45gms
(c) 45 — 50 gms (d) None of the above
155. By processing soyabean seeds, various products which are prepared can help in
(a) certain cancer diseases (b) cardio-vascular diseases
(c) both (a) & (b) (d) None of the above
156. Pneumatic separation of fruits by grader depends on
(a) size and shape of the fruit (b) density of the fruit
(c) surface resistance of the fruits (d) All of the above
157. In order to extract juices from sugarcane crushers, the king roller is fitted in
(a) Bullock drawn crusher at the top of the roller gear.
(b) Power driven cane-crusher, it is fitted separately above the axle of the roller
(c) None of these
(d) Both (a) & (b)
158. Equivalent moisture content of food grains is measured in
(a) Dry weight basis (b) Wet weight basis
(c) Measuring instruments (d) All of the above
159. Design of a grain dryer aims at
(a) finding the dimensions of the equipment
(b) drying agent and heat requirement
(c) both of above (a) & (b)
(d) None of the above
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160. Indian farmers are adopting latest farm mechanization techniques in order to
(a) Achieve the timelines in farm operations
(b) Reduction in loss of crops and food products
(c) Reduction in drudgery and labour
(d) Allof the above
161. Tillage is the preparation of soil to provide
(a) conditions favourable to plant growth for flood
(b) weed free field during plant growth during flood
(c) both of (a) & (b)
(d) None of the above
162. Bullock operated mould board ploughs are
(a) Single bottom (b) Double bottom
(c) Multiple bottom (d) None of these
163. Gunnel is a part of
(a) Indigenous plough (b) Mould board plough
(c) Cultivator (d) None of the above
164. Materials which are used for making shares of the plough are
(a) plain steel (b) soft centre steel
(c) chilled cast iron (d) Both (a) and (c)
165. The manual rotary paddy weeder is used for
(a) weeding the paddy field by uprooting the weeds
(b) burying weeds in wet soils
(c) None of the above
(d) Both (a) & (b)
166. During the threshing of crops as far as possible ensure that
(a) threshing yard should be away from the residential area
(b) it should be located near the railway track
(c) adequate fire protection services must be provided
(d) both of the (a) & (c)
167. Wind mills can be used for
(a) water pumping (b) electricity generation
(c) both of (a) & (b) (d) None of these
168. Gur (Jaggery) making process from sugarcane involves
(a) crushing of sugarcane
(b) heating of the sugarcane juice to make it semi-solid
(c) cooling down and make jaggery
(d) All of the above process
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169. If the moisture content on wet basis is 20%, then what would be the moisture content on
drybasis?
(a) 20% (b) 25% (c) 30% (d) 15%
170. Sucrose content in sugarcane is about
(a) 5 — 10 percent (b) 10 — 15 percent
(c) 15 — 20 percent (d) None of the above
171. The largest sugarcane producing country in the world is
(a) Canada (b) India (c) Russia (d) America
172. Disc separators separate grain by
(a) Shape (b) Weight
(c) Colour (d) Size
173. To separate mustard seed from wheat, the best type of separator is
(a) Specific gravity separator (b) Spiral separator
(c) Centrifugal separator (d) All of the above
174. A scalper is used for
(a) grading the material (b) removing of stones
(c) fine separation of materials (d) rough separation of materials
175. Crushing capacity of power operated cane crusher is
(a) <60% (b) 70%
(c) > 80 % (d) None of the above
176. The number of holes per square inch in a 20 mesh screen will be
(a) 800 (b) 400 (c) 200 (d) 20
177. During seed processing, the moisture content of seed should be
(a) < 15 percent (b) 15 — 20 percent
(c) 20 —25 percent (d) > 25 percent
178. Which one of the following energy sources is not renewable?
(a) Solar energy (b) Wind energy
(c) Coal energy (d) Nuclear energy
179. When the engine cycle is completed in two revolutions of the crankshaft, the engine is
known as
(a) two stroke cycle engine (b) four stroke cycle engine
(c) eight stroke cycle engine (d) None of the above
180. Hot spark plugs are used in
(a) Slow speed engine (b) Low compression engine
(c) Two stroke petrol engine (d) Allof the above
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Source: Uttarakhand Public Service Commission. Question paper published by Uttarakhand Public Service Commission.