Boiler Operation Engineer Previous year Questions With Answer Set - 28
1. What is the critical pressure of steam in a utility steam generator?
a) 220.2 bar
b) 221.2 bar
c) 222.2 bar
d) 225.2 bar
Ans. b
2. The boiler in which the tubes are surrounded by hot gases is called ___________
a) fire tube boiler
b) water tube boiler
c) both fire and water tube boiler
d) none of the mentioned
Ans. b
3. Which of these is not a type of steam generator depending upon the kind of applications?
a) utility steam generators
b) marine steam generators
c) agricultural steam generators
d) industrial steam generators
Ans. c
5. Which of the following are drumless once-through steam generators?
a) Subcritical steam generator
b) Supercritical steam generators
c) Utility steam generators
d) Marine steam generators
Ans. b
6. The supercritical steam generators operate at a pressure range of ___________
a) 200-240 bar
b) 200-220 bar
c) 220- 240 bar
d) >240 bar
Ans. d
7. Marine steam generators are ___________ fired.
a) water
b) oil
c) phenol
d) none of the mentioned
Ans. b
8. In a fire-tube boiler, the water is in ___________
a) tube
b) shell
c) drum
d) all of the mentioned
Ans. b
9. In a water-tube boiler, water flows through?
a) drum
b) shell
c) tube
d) none of the mentioned
Ans. c
10. Industrial steam generators operate at a steam capacity of ___________
a) 1300 kg/s
b) 1000 kg/s
c) 500 kg/s
d) 125 kg/s
Ans. d
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