Steam Boilers and Engines MCQ with Answers

Steam Boilers and Engines MCQ with Answers

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

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.

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

Answer is:

63%

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

Answer is:

spring loaded safety valve

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

Answer is:

Locomotive boiler

50) Which of the following statement is correct ?

Answer is:

all of the above

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