When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as

Mechanical Engineering : Steam Boilers and Engines - Quiz(MCQ)

internally fired boiler

externally fired boiler

natural circulation boiler

forced circulation boiler

Correct Answer : Option (D) : forced circulation boiler

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In forced circulation steam boilers, the force is applied

to circulate water

to draw water

to drain off the water

All of the above

Correct Answer : to circulate water

The amount of water evaporated in kg per kg of fuel burnt is called

boiler efficiency

equivalent evaporation from and at 100Â° C

evaporative capacity of a boiler

None of the above

Correct Answer : evaporative capacity of a boiler

The ratio of the actual vacuum to the ideal vacuum in a condenser is called

nozzle efficiency

boiler efficiency

vacuum efficiency

condenser efficiency

Correct Answer : vacuum efficiency