Mechanical Engineering - Steam Boilers and Engines - Discussion


Blow off cock in a boiler is used to

[A]. control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required
[B]. empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler
[C]. put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit
[D]. increase the temperature of saturated steam without raising its pressure

Answer: Option B


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