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MCQs 1: Turbo alternators run at speeds

Constant speed of 3000 rpm. Constant speed of 1000 rpm. A variable speed of above 1000 rpm. None of the above
Answer Explanation

MCQs 2: A steam turbine with no nozzle is ________________.

Reaction turbine Impulse turbine Both (a) and (b) None of these
Answer Explanation

MCQs 3: The pipes carrying the steam are made of _________.

Steel Cast iron Aluminium Cobalt
Answer Explanation

MCQs 4: The governing principle of steam turbines are ________________.

Nozzle control governing Throttle governing Bypass governing All of these
Answer Explanation

MCQs 5: The reheat factor in a steam turbine depends on

Stage efficiency Initial pressure and temperature Exit pressure All of the above
Answer Explanation

MCQs 6: The use of air preheater increase the temp of the air by about______________.

50° 20° 5° 30°
Answer Explanation

MCQs 7: Air- preheater in a steam power plant_____________.

Recovers the heat from the flue gases leaving the economiser. Improves combustion rate. Raises the temperature of the furnace gases All of these.
Answer Explanation

MCQs 8: The definition of the draught system is

A device used to pull in air. The difference between absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure. The sum of the absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure. A device used to pull out air.
Answer Explanation

MCQs 9: The draught produced by the chimney is________________.

Forced draught Natural draught Induced draught Balanced draught
Answer Explanation

MCQs 10: A condenser condenses the steam coming out from___________.

Boiler Turbine Economiser Super heater
Answer Explanation

MCQs 11: Water used in the steam plant is used for cooling in_______________.

Condenser Turbine only Boiler tube Boiler tubes and turbines
Answer Explanation

MCQs 12: What is use of the air pumps in the condenser?

Remove water Air leaking in the condenser and to maintain the vacuum Maintain atmospheric pressure and the condenser Both (a) & (b)
Answer Explanation

MCQs 13: Spray ponds are used to cool the warm water coming from the condenser in ________.

Large power plants Small power plants Medium power plants Both medium and large power plants.
Answer Explanation

MCQs 14: Evaporative type of condenser has

Water in pipes surrounded by steam outside. Steam and cooling water mixed to give the condensate. Steam in pipes surrounded by water. None of the above.
Answer Explanation

MCQs 15: The best coal suitable for the production of energy is_________________.

Lignite Bituminous Anthracite Peat
Answer Explanation

MCQs 16: Name the system that is mainly employed for the disposal of fly ash.

Pneumatic Hydraulic Both (a) & (b) Steam jet system
Answer Explanation

MCQs 17: What is the superior quality of coal called?

Anthracite Coke Bituminous Peat
Answer Explanation

MCQs 18: The coal with highest ash content is ________.

Lignite Steam coal Coking coal Bituminous coal
Answer Explanation

MCQs 19: The major content of coal in India is ________________.

Dust Ash Fly ash Cinder
Answer Explanation

MCQs 20: On which factor does the calorific value of coal depend?

Ash content Size of coal particles Moisture content Volatile material
Answer Explanation

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