46) Cut-off governing of steam engines is a method of controlling the engine output by varying

volume of intake steam

pressure of intake steam

temperature of intake steam

all of these

Answer is:

volume of intake steam

Explanation:

The cut-off governing, of a simple steam engine, is a method of controlling the engine output by varying volume of intake steam. This is done by varying the cut-off point by a slide valve under the control of a centrifugal governor.

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Related Steam Boilers and Engines MCQ with Answers

47) In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be

56%

63%

74%

78%

Answer is:

63%

48) A safety valve mainly used with locomotive and marine boilers is

lever safety valve

dead weight safety valve

high steam and low water safety valve

spring loaded safety valve

Answer is:

spring loaded safety valve

49) Which of the following boiler is best suited to meet the fluctuating demand of steam ?

Locomotive boiler

Lancashire boiler

Cornish boiler

Babcock and Wilcox boiler

Answer is:

Locomotive boiler

50) Which of the following statement is correct ?

Lancashire boiler is a fire tube boiler.

Fire tube boilers are internally fired.

Babcock and Wilcox boiler is a water tube boiler.

all of the above

Answer is:

all of the above

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