Q. The efficiency of a boiler is defined as

View solution

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

View solution

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

View solution

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

View solution

Q. The value of diagram factor depends upon

View solution

Q. The function of an eccentric rod is

View solution

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

View solution

Q. The function of a valve rod is

View solution

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

View solution

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

View solution

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

View solution

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.

View solution

Q. Clearance ratio is the ratio of

View solution

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)

View solution