Mechanical Engineering - IC Engines and Nuclear Power Plants

16.
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.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
In a four stroke cycle petrol engine, the charge is ignited at
30° before top dead centre
30° after top dead centre
30° before bottom dead centre
30° after bottom dead centre
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to
slow down the speed of fast moving neutrons
control the reaction
reduce the temperature
extract heat from nuclear reaction
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is
heavy water
graphite
carbon dioxide
no moderator is needed
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
In a diesel engine, the duration between the time of injection and ignition, is known as
pre-ignition period
delay period
period of ignition
burning period
Answer: Option
Explanation:
No answer description is available. Let's discuss.