Mechanical Engineering - Steam Boilers and Engines

36. 

Lancashire boiler is

A. stationary fire tube boiler
B. internally fired boiler
C. horizontal boiler
D. all of these

Answer: Option D

Explanation:

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37. 

The diameter of a cylindrical shell of a Scotch marine boiler varies from

A. 1.5 to 2 m
B. 2.5 to 3.5 m
C. 3.5 to 4.5 m
D. none of these

Answer: Option B

Explanation:

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38. 

The missing quantity per stroke is equal to

A. cylinder feed - indicated mass of steam
B. cylinder feed + indicated mass of steam
C. mass of cushion steam + indicated mass of steam
D. mass of cushion steam + cylinder feed

Answer: Option A

Explanation:

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39. 

In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the condenser pressure.

A. equal to
B. lower than
C. higher than

Answer: Option C

Explanation:

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40. 

A compound steam engine requires a heavier flywheel than simple steam engines.

A. True
B. False

Answer: Option B

Explanation:

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