Ic Engines And Nuclear Power Plants

Question: The brake power is always greater than indicated power.
[A].

Agree

[B].

Disagree

Answer: Option B

Explanation:

No answer description available for this question.

Question: 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: Option D

Explanation:

No answer description available for this question.

Question: The brake power is the power available
[A].

in the engine cylinder

[B].

at the crank shaft

[C].

at the crank pin

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: If the speed of the engine is increased, the indicated power will
[A].

increase

[B].

decrease

[C].

remain same

Answer: Option A

Explanation:

No answer description available for this question.

Question: Number of working strokes per min. for a four stroke cycle engine are __________ the speed of the engine in r.p.m.
[A].

equal to

[B].

one-half

[C].

twice

[D].

four-times

Answer: Option B

Explanation:

No answer description available for this question.

Question: Number of working strokes per min. for a two stroke cycle engine are __________ the speed of the engine in r.p.m.
[A].

equal to

[B].

one-half

[C].

twice

[D].

four-times

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following statement is correct regarding normal cetaine?
[A].

It is a standard fuel used for knock rating of diesel engines.

[B].

Its chemical name is normal-hexadecane.

[C].

It has long carbon chain structure.

[D].

all ofthe above

Answer: Option D

Explanation:

No answer description available for this question.

Question: 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: Option D

Explanation:

No answer description available for this question.

Question: The basic requirement of a good combustion chamber is
[A].

minimum turbulence

[B].

low compression ratio

[C].

high thermal efficiency and power output

[D].

low volumetric efficiency

Answer: Option C

Explanation:

No answer description available for this question.

Question: 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

Answer: Option A

Explanation:

No answer description available for this question.