Exercise: Ic Engines And Nuclear Power Plants

Questions for: Ic Engines And Nuclear Power Plants

The firing order in an I.C. engine depends upon
A:
arrangement of the cylinders
B:
design of crankshaft
C:
number of cylinders
D:
all of these
Answer: D
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The thermal efficiency of petrol and gas engines is about
A:
15%
B:
30%
C:
50%
D:
70%
Answer: B
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A power plant giving least running cost of production of electrical power is
A:
steam power plant
B:
gas turbine power plant
C:
hydro electric power plant
D:
nuclear power plant
Answer: C
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The brake power (B.P.) of the engine is given by (where W = Brake load or dead load in newtons, l = Length of arm in metres, N = Speed of engine in r.p.m., S - Spring balance reading in newtons, D = Dia. of brake drum in metres, and d = Dia. of rope in metres)
A:
B:
C:
D:
all of these
Answer: D
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Detonation is harmful due to
A:
increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine
B:
excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls
C:
high intensity of knock causes crankshaft vibration and the engine runs rough
D:
none of the above
Answer: D
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