40% cetane and 60% alpha methyl napthalene
40% alpha methyl napthalene and 60% cetane
40% petrol and 60% diesel
40% diesel and 60% pet
✅ The correct answer is option A.
IC Engines and Nuclear Power Plants MCQs
52. Uranium has isotopes
U234
U235
U238
all of these
✅ The correct answer is option D.
53. The brake power is the power available
in the engine cylinder
at the crank shaft
at the crank pin
none of these
✅ The correct answer is option B.
54. The delay period in oil engines increases with increase in the speed of engine.
Agree
Disagree
✅ The correct answer is option B.
55. The knocking in spark ignition engines can be reduced by
retarding the spark
increasing the engine speed
both (a) and (b)
none of these
✅ The correct answer is option C.
56. A petrol engine has compression ratio from
6 to 10
10 to 15
15 to 25
25 to 40
✅ The correct answer is option A.
57. In a four stroke cycle diesel engine, the compression
starts at 40° after bottom dead centre and ends at 10° before top dead centre
starts at 40° before top dead centre and ends at 40° after top dead centre
starts at top dead centre and ends at 40° before bottom dead centre
may start and end anyw
✅ The correct answer is option A.
58. Reflector in nuclear power plants is used to reflect neutrons back into the active core.
TRUE
FALSE
✅ The correct answer is option A.
59. In a petrol engine, the mixture has the lowest pressure at the
beginning of suction stroke
end of suction stroke
end of compression stroke
none of these
✅ The correct answer is option B.
60. The volumetric efficiency ofa well designed engine may be
30 to 40%
40 to 60%
60 to 70%
75 to 90%
✅ The correct answer is option D.