Boiler Operation Engineer Previous year Questions With Answer Set - 26
1. What is the critical pressure of steam?
a) 221.2 bar
b) 220 bar
c) 120 bar
d) 300 bar
Ans. a
2. An air preheater is installed _____________
a) between the economiser and chimney
b) before the superheater
c) before the economiser
d) none of the mentioned
Ans. a
3. The natural draught is produced by _________
a) steam jet
b) chimney
c) centrifugal fan
d) none of the mentioned
Ans. b
4. Which of the following boiler is best suited to meet the fluctuating demand of steam?
a) Locomotive boiler
b) Lancashire boiler
c) Babcock and Wilcox boiler
d) Cornish boiler
Ans. a
5. Which of the following statement is wrong?
a) Water tube boilers are internally fired
b) Locomotive boiler is a water tube boiler
c) La-mont boiler is a low pressure water tube boiler
d) All of the mentioned
Ans. d
6. The object of producing draught in a boiler is _________
a) to discharge the gases of combustion to the atmosphere through the chimney
b) all of the mentioned
c) to exhaust the gases of combustion from the combustion chamber
d) to provide an adequate supply of air for the fuel combustion
Ans. b
7. How can we classify steam generators on the basis of application?
a) utility steam generators
b) industrial steam generator
c) marine steam generator
d) all of the mentioned
Ans. d
8. What is the length of shell of a Locomotive boiler?
a) 5m
b) 4m
c) 3m
d) 2m
Ans. b
9. Which of the following statement is correct?
a) A simple vertical boiler has one fire tube
b) A fire tube boiler occupies less space than a water tube boiler, for a given power
c) Steam at a high pressure and in large quantities can be produced with a simple vertical boiler
d) all of the mentioned
Ans. a
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