MCQs of Conventional Generation, Load Curves and Tariffs (Power System - I - 3140914)

Showing 211 to 220 out of 425 Questions

211.

The draught produced in locomotive boilers is by

212.

The pressure at the furnace is minimum in case of

213.

In forced draught the main function of the chimney is to

(a)	Discharge gases high up in the atmosphere from the point of view of air pollution
(b)	Accelerate the fuel combustion
(c)	Reduce the temperature of the discharged hot gases
(d)	All of above

214.

Induced draught fans are used to

(a)	Cool the steam let out by the turbine in thermal station
(b)	Cool the hot gases coming out of the boiler
(c)	Force the air inside the coal furnace
(d)	Control the heat generated in a nuclear reactor

215.

Permissible pH value of water for steam boilers is

216.

The feed water treatment is done mainly to avoid

(a)	Embrittlement problem
(b)	Carry over problem
(c)	Corrosion and scale formation problems
(d)	All of above

217.

Boiling down of boiler water is done so as to

(a)	Control the solid concentration in the boiler water by removing some of the concentrated saline water
(b)	Remove dissolved gases in the water
(c)	Reduce boiler pressure
(d)	Increase steam temperature

218.

It is necessary to heat water before feeding it back to the boiler as because of this

(a)	The dissolved oxygen and carbon dioxide which would otherwise corrode boiler are removed in the feed water heater
(b)	Thermal stresses due to cold water entering the boiler drum are avoided
(c)	Some other impurities carried by steam and condensate due to corrosion in boiler and condenser are precipitated outside the boiler
(d)	All of above

219.

Huge quantity of water is required in a steam power plant. It is required

(a)	To raise the steam in boilers
(b)	For cooling purposes such as condensers
(c)	As a carrying medium such as in disposal of ash
(d)	All of above

220.

The auxiliary consumption in a thermal power (steam) station is

Showing 211 to 220 out of 425 Questions