POWER PLANT ENGINEERING IAT-3

1-The amount of air required for complete combustion of fuel is called:

• (A) Excess air

• (B) Free air

• (C) Stoichiometric air

• (D) None of the above

8-The energy content of steam is called:

• (A) Entropy

• (B) Density

• (C) Specific volume

• (D) Enthalpy

17-Super heated steam is

• (A) Steam at a temperature below boiling point of water

• (B) Steam at a temperature above boiling point of water

• (C) Steam at boiling point of water

• (D) None of the above

19-Which of these components on the boiler is used to recover the waste heat of the flue gases for heating feed water?

• (A) Super heater

• (B) Economizer

• (C) Pre heater

• (D) Fusible plug

20-Which of these components on the boiler is used to increase the temperature steam above saturation temperature?

• (A) Air pre heater

• (B) Economizer

• (C) Super heater

• (D) None of the above

21-Function of steam separator:

• (A) To remove the entrained water particles from the steam conveyed to steam engine

• (B) To increase the temperature of the steam above saturation point

• (C) To increase the temperature of air before it enters the furnace

• (D) All the above

22-Which of the following as referred to steam boiler are defined as mountings?

• (A) Safety valve

• (B) Economizer

• (C) Air pre heater

• (D) Stop valve

23-Draught produced by chimney is described as:

• (A) Induced draught

• (B) Natural draught

• (C) Forced draught

• (D) Balanced draught

24-Artificial draught is produced by:

• (A) Induced fan

• (B) Forced fan

• (C) Induced fan and Forced fan

• (D) All of the above

25-The pressure is minimum at the furnace in case of:

• (A) Forced draught system

• (B) Induced draught system

• (C) Balanced draught system

• (D) Natural draught system