Power System - I (3140914) MCQs

MCQs of Conventional Generation, Load Curves and Tariffs

Showing 101 to 110 out of 425 Questions
8 9 10 11 12 13
101.
Which of the following enters the super heater ?
(a) Super-heated steam
(b) Wet steam
(c) Hot water
(d) Cold water
Answer:

Option (b)

102.
Super-heated steam is always
(a) At a pressure more than that of the boiler steam
(b) At a pressure lower than the maximum cycle pressure
(c) At a temperature higher than the temperature of saturation corresponding to the steam pressure
(d) None of above
Answer:

Option (b)

103.
Steam is super-heated in order to
(a) Improve rankine cycle efficiency
(b) Reduce initial condensation losses
(c) Avoid too high temperature in the last stage of the turbine
(d) All of above
Answer:

Option (d)

104.
The function of the economizer is to
(a) Heat up the incoming water with exhaust steam
(b) Heat up the pulverized fuel by exhaust gases
(c) Heat up the incoming air by exhaust gases
(d) Heat up the incoming water by exhaust gases
Answer:

Option (d)

105.
The main function of economizer of a boiler plant is to
(a) Increase steam production
(b) Reduce fuel consumption
(c) Increase steam pressure
(d) Increase life of the boiler
Answer:

Option (b)

106.
In a steam power plant heat from the flue gases is recovered in
(a) A condenser
(b) A chimney
(c) Economizer and air preheater
(d) A super heater
Answer:

Option (c)

107.
Economizer in a steam power plant
(a) Improves the boiler efficiency by 10 -12%
(b) Saves fuel consumption by 5 -15%
(c) Becomes a necessity for pressure exceeding 70 kg/cm2
(d) All of above
Answer:

Option (d)

108.
The advantage of reheating of steam in a turbine is that
(a) It increases the efficiency of the turbine
(b) It reduces the wears on the blades
(c) It increases the work done through the turbine
(d) All of above
Answer:

Option (d)

109.
Air preheater in a steam power plant
(a) Recovers the heat from the flue gases leaving the economizer
(b) Improves combustion rate
(c) Raises the temperature of the furnace gases
(d) All of above
Answer:

Option (d)

110.
Condensers in thermal power plants are condensing
(a) Steam to water
(b) Water to ice
(c) Hydrogen gas to liquid gas
(d) Carbon dioxide to dry ice
Answer:

Option (a)

Showing 101 to 110 out of 425 Questions
8 9 10 11 12 13