Which of the following statement is correct for a compound steam engine ?

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

The ratio of expansion is reduced, thus reducing the length of stroke.

The forces in the working parts are increased as the forces are distributed over more parts.

The temperature range per cylinder is increased, with corresponding increase in condensation.

The cost of the engine, for the same power and economy, is more than that of a simple steam engine.

Correct Answer : Option (A) : The ratio of expansion is reduced, thus reducing the length of stroke.

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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