Boiler Operation Engineer (BOE) Question And Answer Set - 46
1. What purpose do baffle plates serve in a Babcock and Wilcox boiler?
a) They direct the flow of water
b) They direct the flow of steam
c) They direct the flow of hot gases
d) They direct the flow of air to combustion chamber
Ans. c
2. Stirling boiler is _____
a) a fire tube boiler
b) a bent-tube (water tube) boiler
c) a horizontal straight tube (water tube) boiler
d) a high pressure boiler
Ans. b
3. Which of the following statements is FALSE for a cross drum Babcock and Wilcox boiler?
a) The alignment of boiler drum is different in cross drum and longitudinal drum boilers
b) Any number of connecting tubes can be used
c) Steam of pressure 100 bar could be generated
d) Steam capacity is 45000 kg/hr
Ans. d
4. In Babcock and Wilcox boiler, just before entering the superheater the steam enters _____
a) uptake header
b) down take header
c) main stop valve
d) anti priming pipe
Ans. d
5. What is the maximum steam capacity of a Babcock and Wilcox boiler?
a) 20000 kg/hr
b) 30000 kg/hr
c) 40000 kg/hr
d) 50000 kg/hr
Ans. c
6. What is maximum working pressure of Babcock and Wilcox boiler?
a) 40 bar
b) 50 bar
c) 60 bar
d) 80 bar
Ans. a
7. What is the correct range of size of superheater tubes in Babcock and Wilcox boiler?
a) 1.20 to 2.10 cm
b) 2.12 to 2.84 cm
c) 3.84 to 5.71 cm
d) 5.84 to 6.25 cm
Ans. c
8. For a Babcock and Wilcox boiler, what is the correct range of size of the water tubes?
a) 1.22 to 1.44 cm
b) 4.98 to 6.02 cm
c) 7.62 to 10.16 cm
d) 12.25 to 15.54 cm
Ans. c
9. Which of the following is a horizontal straight tube boiler?
a) Lancashire boiler
b) Babcock and Wilcox boiler
c) Stirling boiler
d) Locomotive boiler
Ans. b
10. What is the correct range of diameter of the drum for a Babcock and Wilcox boiler?
a) 0.61 – 1.02 m
b) 1.22 – 1.83 m
c) 2.87 – 3.52 m
d) 4.89 – 5.66 m
Ans. b
11. Water tube boilers are further classified into horizontal straight tube and bent tube boilers.
a) True
b) False
Ans. a
12. Babcock and Wilcox boiler is a forced circulation boiler.
a) True
b) False
Ans. b
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