Power System - I (3140914) MCQs

MCQs of Conventional Generation, Load Curves and Tariffs

Showing 181 to 190 out of 425 Questions
16 17 18 19 20 21
181.
In coal preparation plants, the magnetic separation are used for removing
(a) Dust
(b) Iron particles
(c) Clinkers
(d) All of above
Answer:

Option (b)

182.
Burning of low grade fuel can be improved by
(a) Pulverizing
(b) Blending with better quality coals
(c) Oil assisted ignition
(d) Any of above
Answer:

Option (d)

183.
Which one is essential for combustion of fuel?
(a) Oxygen
(b) Correct fuel-air ratio
(c) Proper ignition temperature
(d) All of above
Answer:

Option (d)

184.
The percentage of O2 in atmospheric air is
(a) 21% by volume
(b) 23% by weight
(c) 79% by volume and 77% by weight
(d) Both (a) and (b)
Answer:

Option (d)

185.
The proper indication of incomplete combustion is
(a) The smoking exhaust from chimney
(b) High temperature of flue gas
(c) High CO content in flue gases at exit
(d) High CO2 content in flue gases at exit
Answer:

Option (c)

186.
The stoker used in large capacity boilers, when unpulverized coal is used , is
(a) Overfeed stoker
(b) Underfeed stoker
(c) Any of above
(d) None of above
Answer:

Option (a)

187.
Overfeed stoker includes
(a) Traveling grate
(b) Chain grate
(c) Spreader
(d) All of above
Answer:

Option (d)

188.
The equipment used for supplying coal to the boiler, when unpulverized coal is being used, is
(a) Skip hoist
(b) Stoker
(c) Any of above
(d) None of above
Answer:

Option (b)

189.
Capacity of the underfeed stoker is in the range of
(a) 100 - 250 kg of coal burned per hour
(b) 100 - 500 kg of coal burned per hour
(c) 100 - 2000 kg of coal burned per hour
(d) 100 - 5000 kg of coal burned per hour
Answer:

Option (d)

190.
Traveling grate stoker can burn coal at the rate of
(a) 50 to 75 kg/m2h
(b) 75 to 100 kg/m2h
(c) 100 to 150 kg/m2h
(d) 150 to 200 kg/m2h
Answer:

Option (d)

Showing 181 to 190 out of 425 Questions
16 17 18 19 20 21