Q. The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

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Q. A valve installed between the boiler and the feed pump is

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Q. A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as

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Q. The value of diagram factor depends upon

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Q. The function of an eccentric rod is

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Q. A receiver type compound engine, requires a lighter flywheel.

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Q. The function of a valve rod is

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Q. A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called

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Q. The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called

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Q. In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of

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Q. A device used to empty the boiler whenever required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler, is called blow off cock.

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Q. Clearance ratio is the ratio of

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Q. The boiler efficiency is given by (where m = Total mass of water evaporated into steam in kg/h, mf = Mass of fuel in kg/h, C = Calorific valve of fuel in kJ/kg of fuel, h = Total heat of steam in kJ/kg, and hf1 = Sensible heat of feed water in kJ /kg)

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