Exercise: Ic Engines And Nuclear Power Plants

Questions for: Ic Engines And Nuclear Power Plants

Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is
A:
heavy water
B:
graphite
C:
carbon dioxide
D:
no moderator is needed
Answer: D
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A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to
A:
slow down the speed of fast moving neutrons
B:
control the reaction
C:
reduce the temperature
D:
extract heat from nuclear reaction
Answer: A
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In a four stroke cycle petrol engine, the charge is ignited at
A:
30° before top dead centre
B:
30° after top dead centre
C:
30° before bottom dead centre
D:
30° after bottom dead centre
Answer: A
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In open combustion chamber in diesel engines, the shape and layout of the piston crown, the inlet port and the valve produce the turbulent effect of fuel mixture.
A:
True
B:
False
C:
D:
Answer: A
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The object of supercharging the engine is
A:
to reduce mass ofthe engine per brake power
B:
to reduce space occupied by the engine
C:
to increase the power output of an engine when greater power is required
D:
all ofthe above
Answer: D
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