41. In qualitative governing, the quantity of fuel is varied to suit the load on the engine and the total charge of air is altered.
Correct
Incorrect
✅ The correct answer is option B.
IC Engines and Nuclear Power Plants MCQs
42. The unit million electron volts (Mev) is commonly used to measure the nuclear energy.
TRUE
FALSE
✅ The correct answer is option A.
43. Morse test is used to determine the I.P. of a
single cylinder petrol engine
four stroke engine
single cylinder diesel engine
multi-cylinder engine
✅ The correct answer is option D.
44. The compression ignition engines are governed by
hit and miss governing
qualitative governing
quantitative governing
combination of (b) and
✅ The correct answer is option B.
45. In petrol engines, using a fixed octane rating fuel, the increase in engine speed will decrease the knocking tendency.
Yes
No
✅ The correct answer is option A.
46. The ratio of the work obtained at the crankshaft in a given time to the energy supplied during the same time is called
mechanical efficiency
overall efficiency
indicated thermal efficiency
volumetric efficiency
✅ The correct answer is option B.
47. The knocking tendency in spark ignition engines may be decreased by
controlling the air-fuel mixture
controlling the ignition timing
controlling the exhaust temperature
reducing the compressi
✅ The correct answer is option D.
48. If petrol is used in a diesel engine, then
low power will be produced
efficiency will be low
higher knocking will occur
black smoke will be pr
✅ The correct answer is option C.
49. In a four stroke cycle petrol engine, the expansion
starts at top dead centre and ends at bottom dead centre
starts at 30° before top dead centre and ends at 50° before bottom dead centre
starts at 30° after top dead centre and ends at 50° after bottom dead centre
may start and end anyw
✅ The correct answer is option B.
50. The air standard efficiency of an I.C. engine depends on
fuel used
speed of engine
compression ratio
none of these
✅ The correct answer is option C.