TOP 50 BOILER ATTENDANT QUESTION & ANSWER FOR EXAMINATION - ASKPOWERPLANT
BOILER MULTIPLE TYPE QUESTION AND ANSWER
2

TOP 50 BOILER ATTENDANT QUESTION & ANSWER FOR EXAMINATION

In this article we discussed about TOP 50 BOILER ATTENDANT QUESTION & ANSWER FOR EXAMINATION  , these question answers are very helpful for who preparing for BOE EXAMINATION , also who preparing for the Energy manager or Energy auditor exam . all of these question are selected by the power plant professional peoples who worked in power plant a very long time of interval and have very deep knowledge of power plant. so let us discussed all short type of power plant question answer.

1. Boiler drum is located at
a. Top of the boiler front
b. Middle of the Economiser
c. Above the mill bay
d. Inside the boiler furnace

2. Boiler drum is required for
a. Collecting steam only
b. Collecting water only
c. Separation both water and steam
d. None of these

3. Steam separation inside the drum take place
a. By centrifugal action
b. By gravity action
c. By heating of steama
d. By centrifugal action and gravity action

4. A boiler is said to be of water tube type if
a. Water passes through tubes and hot product of combustion surrounds the tubes
b. The hot product of combustion passes through the tubes and water surrounds it
c. Forced circulation take place
d. None of these

5. Safety valve are opened by
a. Steam pressure
b. Steam pressure and spring pressure
c. Spring pressure
d. Boiler water pressure

6. The device which indicate the exact level of water in the boiler at any instant is called
a. Feed check valve
b. Blow off valve
c. Stop valve
d. Water level indicator

7. The basic purpose of drum in a boiler is to
a. Serve a storage device
b. Serve as storage of feed water and water wall
c. Remove salt from water
d. Separate steam from water

8. High level of water in the drum can causes
a. Stress in drum due to sudden cooling
b. Stresses in the riser tubes
c. Carryover of water particals along with steam
d. Foaming of drum level water

9. Critical pressure of water is
a. 220 bar
b. 221.2 bar
c. 100 bar
d. 150 bar

10. Which factor influence the design of convective superheater
a. Flue gas velocity
b. Steam velocity
c. Temperature difference between the flue gas and steam
d. All of these

11. Criteria for superheater tube material selection is are
a. It should be oxidation resistance
b. It should high creep resistance
c. It should be cost effective
d. All of these

12. The main ingredients of high temperature steel tubing are as follow
a. Zinc and niobium
b. Chromium and molybdenum
c. Titanium and vanadium
d. Cobalt and zirconium

13. Which of the boiler is fire tube boiler
a. Stirling boiler
b. Benson boiler
c. Cochran boiler
d. Babcock and Wilcox boiler

14. Which of the following uses natural circulation
a. Lamount boiler
b. Benson boiler
c. Velvox boiler
d. Babcock Wilcox boiler

15. The function of primary air is
a. To carry coal partical
b. To remove moisture from coal
c. Both a & b
d. None of these

16. The percentage of primary air to the total air supplied is
a. 10-13
b. 1-5
c. 50
d. 70

17. The total numbers of feed water heater in case of modern power plant is
a. 7
b. 10
c. 12
d. 5

18. The high pressure boiler has minimum pressure of
a. 100 bar
b. 200 bar
c. 50 bar
d. 60 bar

19. The ph value of water in boiler drum is
a. 10.5
b. 5
c. 7
d. 8

20. The chemical used for removing of air is
a. Hydrazine
b. Sodium bicarbonate
c. Potash soda
d. Ammonia

21. The coal with maximum moisture is
a. Peat
b. Lignite
c. Bituminous
d. Anthracite
22. The coal with the maximum calorific value
a. Peat
b. Lignite
c. Bituminous
d. Anthracite

23. The higher calorific value and lower calorific value of the fuel would not be same if it does contain
a. Sulphur
b. Carbon
c. Nitrogen
d. Hydrogen

24. The advantage of pulverized coal firing is
a. Low excess air requirement
b. Higher boiler efficiency
c. Less fan power
d. All of these

25. The pulveriser works on the principal of
a. Impact
b. Crushing
c. Attrition
d. All of these

26. The primary air is supplied to the pulveriser at a temperature of
a. 350
b. 100
c. 150
d. 120

27. Which of the following is bent tube boiler ?
a. Stirling boiler
b. Babcock Wilcox boiler
c. Cochrane boiler
d. Lancashire boiler
29. Manhole shape is
a. Elliptical
b. Rectangular
c. Square
d. All of these
30. Down comers are
a. Few in numbers
b. Having large in diameter
c. Both a & b
d. Neither a nor b

31. The temperature of flue gas at inlet of air preheater is
a. 315 – 450
b. 400- 500
c. 500 – 600
d. 200 – 250

32. Drumless boiler operates at a pressure of
a. 250 bar
b. 200 bar
c. 100 bar
d. 150 bar

33. The air preheater is installed between
a. Forced fan and chimney
b. Economizer and chimney
c. Super heater and reheater
d. Re heater and chimney

34. Which of the following is a boiler accessory
a. Fusible plug
b. Re heater
c. Pressure gauge
d. Safety valve

35. Which of the following is a boiler mounting
a. Superheater
b. Reheater
c. Pressure gauge
d. Steam trap

36. Fusible plug is located at
a. Just above the furnace
b. Water wall
c. Top of the boiler drum
d. Between reheater and superheater

37. The circulation ratio in case of boiler should be
a. 1 10
b. 30
c. 1-5
d. 40

38. The voltage required in electronic Precipitator is
a. 20 100 kv
b. 220 v
c. 440 v
d. None of these

39. Regenerative feed water heating result in
a. Higher efficiency and higher work output
b. Higher efficiency ans same work output
c. Higher efficiency and lower work output
d. Lower efficiency and higher work output

40. The superheater , reheater and Economiser employ
a. Forced draught
b. Induced draught
c. Balanced draught
d. None of theses

41. Coal devoid of volatile matter is
a. Free burning coal
b. Coke
c. Charcoal
d. None of these

42. This device is also known as low pressure superheater
a. Air preheater
b. Economiser
c. Re heater
d. None of these

43. The water in the steam drum is in
a. Superheater state
b. Dry saturated
c. Wet state
d. Compressed liquid

44. The terminal temperature difference for open feed water heater is
a. Zero
b. Negative
c. Positive
d. Can be positive or negative

45. The lowest temperature at which oil will flow under standard pressure conditions
a. Pour point
b. Cloud point
c. Fire point
d. Flash point

46. Reheater and superheater are subjected to
a. Same thermal stresses
b. Same hoop stresses
c. Same thermal stresses as well as hoop stress
d. Different thermal stresses as well as hoop stress

47. Natural draught is provided by
a. Chimney
b. Induced fan
c. Forced fan
d. None of these

48. The external treatment of feed water heater is done with the help of
a. Lime soda
b. Soda ash
c. Neither a nor b
d. Both a & b

49. The device which is used for increasing the temperature
More than that of saturation temperature at boiler pressure is
a. Air preheater
b. Economizer
c. Re heater
d. Superheater

50. Blow off cock is used for
a. To empty the boiler for cleaning, repair and inspection
b. To discharge the mud and sediments from the boiler drum
c. Both a & b
d. Neither a nor b

MORE POWER PLANT QUESTION ANSWERS

 

 

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