Boiler Operation Engineer MCQ Set - 45
1. Which of the following is NOT a valid type of air preheater?
a) Tubular type
b) Plate type
c) Temperature type
d) Storage type
a) Tubular type
b) Plate type
c) Temperature type
d) Storage type
Ans. c
2. The degree of preheating does not depend on _____
a) type of fuel
b) initial temperature of air
c) type of fuel burning equipment
d) boiler and furnace ratings
a) type of fuel
b) initial temperature of air
c) type of fuel burning equipment
d) boiler and furnace ratings
Ans. b
3. Which of the following statements about air preheaters is FALSE?
a) It increases the temperature of air being supplied to the furnace
b) Storage type air preheaters cannot be used in larger plants
c) The temperature of the hot gases released through the chimney is kept minimum
d) It facilitates the burning of fuel
a) It increases the temperature of air being supplied to the furnace
b) Storage type air preheaters cannot be used in larger plants
c) The temperature of the hot gases released through the chimney is kept minimum
d) It facilitates the burning of fuel
Ans. b
4. What is the function of a superheater?
a) It increases the temperature of the air being supplied to furnace
b) It increases the temperature of steam above saturation temperature
c) It increases the temperature of feed water
d) It increases the temperature of the flue gases leaving the furnace
a) It increases the temperature of the air being supplied to furnace
b) It increases the temperature of steam above saturation temperature
c) It increases the temperature of feed water
d) It increases the temperature of the flue gases leaving the furnace
Ans. b
5. Which of the following statements about superheaters is FALSE ?
a) Condensation losses in the cylinders and steam pipes are reduced
b) Turbine erosion is avoided
c) Increases efficiency of the steam plant
d) Steam consumption of the engine is increased
a) Condensation losses in the cylinders and steam pipes are reduced
b) Turbine erosion is avoided
c) Increases efficiency of the steam plant
d) Steam consumption of the engine is increased
Ans. d
6. Which of the following statement about convective superheater is TRUE?
a) It is located in the furnace
b) It absorbs heat from the burning fuel through radiant process
c) It absorbs heat from the flue gases
d) It is used where very high superheat temperature is required
a) It is located in the furnace
b) It absorbs heat from the burning fuel through radiant process
c) It absorbs heat from the flue gases
d) It is used where very high superheat temperature is required
Ans. c
7. What is the function of a steam trap?
a) It is used to store steam once the generation is complete
b) It prevents the leakage of steam from the boiler
c) It is used to increase the temperature of the steam
d) It captures the condensed steam from steam pipes and steam separators
a) It is used to store steam once the generation is complete
b) It prevents the leakage of steam from the boiler
c) It is used to increase the temperature of the steam
d) It captures the condensed steam from steam pipes and steam separators
Ans. d
8. Which of the following is NOT a valid type of steam separator?
a) Baffle (Impact) type
b) Tubular type
c) Reverse current type
d) Centrifugal type
a) Baffle (Impact) type
b) Tubular type
c) Reverse current type
d) Centrifugal type
Ans. b
9. Convective superheater is placed in the furnace and it receives heat from the burning fuel through radiation.
a) True
b) False
a) True
b) False
Ans. b
10. Steam separator reduces the wetness of the steam before it enters the engine or turbine.
a) True
b) False
a) True
b) False
Ans. a
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