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Mechanical Engineering - IC Engines and Nuclear Power Plants

Exercise : IC Engines and Nuclear Power Plants - Section 1
26.
Ordinary water is sometimes used as moderator when enriched uranium is used as a fuel in nuclear power plants.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
The compensating jet in a carburettor supplies almost constant amount of petrol at all speeds because the
jet area is automatically varied depending on the suction
the flow from the main jet is diverted to the compensating jet with increase in speed
the diameter of the jet is constant and the discharge coefficient is invariant
flow is produced due to the static head in the float chamber
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
The effective inhibitor of pre-ignition is
alcohol
water
lead
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The purpose of testing an internal combustion engine is
to determine the information, which can not be obtained by calculations
to conform the data used in design, the validity of which may be doubtful
to satisfy the customer regarding the performance of the engine
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
The thermal efficiency of diesel engines is about
15%
30%
50%
70%
Answer: Option
Explanation:

The thermal efficiency of diesel engines is about 30-50%. This means that for every 100 units of fuel energy input, the engine is able to convert 30-50 units of that energy into useful work. The remaining energy is lost as heat or exhaust.

The maximum theoretical efficiency of a diesel engine is about 70%. However, this is rarely achieved in practice due to factors such as friction, heat loss, and incomplete combustion.

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