Exercise: Steam Boilers And Engines

Questions for: Steam Boilers And Engines

The ratio of brake power to the indicated power is known as
A:
mechanical efficiency
B:
overall efficiency
C:
indicated thermal efficiency
D:
brake thermal efficiency
Answer: A
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The length of Lancashire boiler varies from
A:
5 to 6 m
B:
6 to 7 m
C:
7.25 to 9 m
D:
9 to 10 m
Answer: C
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When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as
A:
throttle governing
B:
cut-off governing
C:
by-pass governing
D:
none of these
Answer: A
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The ratio of heat equivalent to brake power to the energy supplied in steam is known as
A:
mechanical efficiency
B:
overall efficiency
C:
indicated thermal efficiency
D:
brake thermal efficiency
Answer: D
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When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as
A:
internally fired boiler
B:
externally fired boiler
C:
natural circulation boiler
D:
forced circulation boiler
Answer: C
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