Mechanical Engineering - IC Engines and Nuclear Power Plants

1. 

If V1 is the jet velocity and V0 is the vehicle velocity, then propulsive efficiency of a turbo-jet engine is

A.
B.
C.
D.

Answer: Option C

Explanation:

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2. 

Theoretically, a four stroke cycle engine should develop __________ power as that of a two stroke cycle engine.

A. half
B. same
C. double
D. four times

Answer: Option A

Explanation:

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3. 

Light weight substances can not be effective moderators.

A. True
B. False

Answer: Option B

Explanation:

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4. 

The higher combustion chamber wall temperature in compression ignition engines will __________ knocking tendency.

A. increase
B. reduce
C. not effect

Answer: Option B

Explanation:

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5. 

The nuclear radiators produced in a reactor which must be sheilded are

A. electrons
B. α, β and γ rays
C. neutron and gamma rays
D. none of these

Answer: Option C

Explanation:

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