Mechanical Engineering - Steam Boilers and Engines

26. 

An air preheater is installed

A. before the economiser
B. before the superheater
C. between the economiser and chimney
D. none of these

Answer: Option C

Explanation:

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27. 

The length of shell of a Locomotive boiler is

A. 1 m
B. 2 m
C. 3 m
D. 4 m

Answer: Option D

Explanation:

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28. 

The effect of wire drawing is to decrease the area of indicator diagram and thus work done by the engine is reduced.

A. Agree
B. Disagree

Answer: Option A

Explanation:

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29. 

In a uniflow engine

A. steam enters and exhausts through the same port
B. steam enters at one end and exhausts at the centre
C. steam enters at the centre and exhausts at the other end
D. none of the above

Answer: Option B

Explanation:

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30. 

The shell diameter of a Locomotive boiler is

A. 1 m
B. 1.5 m
C. 2 m
D. 2.5 m

Answer: Option B

Explanation:

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