MCQs of Steam Boilers (Basic Mechanical Engineering - 3110006)

Showing 41 to 50 out of 65 Questions

41.

The function of a pressure gauge is

(a)	to blow off steam when the pressure of steam inside the boiler exceeds the working pressure
(b)	to indicate the water level inside the boiler to an observer
(c)	to measure the pressure of steam inside the steam boiler
(d)	none of the above

42.

The function of a safety valve is

(a)	to blow off steam when the pressure of steam inside the boiler exceeds the working pressure
(b)	to indicate the water level inside the boiler to an observer
(c)	to measure the pressure of steam inside the steam boiler
(d)	none of the above

43.

A safety valve usually employed with stationary boilers is

(a)	lever safety valve
(b)	deadweight safety valve
(c)	high steam and low water safety valve
(d)	all of these

44.

The device used for preventing explosions due to excessive internal pressure of steam is called

45.

The principle function of a stop valve is 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 the 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

46.

A valve installed between the boiler and the feed pump is

47.

A device used for removing the impurities from the boiler is called

48.

A device used to put off the fire in the furnace of the boiler when the water level in the boiler falls below the unsafe level is

49.

The purpose of boiler accessories in a boiler is to

(a)	increase thermal efficiency
(b)	superheat the steam
(c)	increase steam pressure
(d)	all of these

50.

Which of the following is not a boiler accessory?

Showing 41 to 50 out of 65 Questions