Boiler Operation Engineer Previous year Questions With Answer Set - 34
1. Which of the following boiler mounting is NOT present in a Cochran boiler?
a) Stem stop valve
b) Blow off cock
c) Safety valve
d) Fusible plug
Ans. d
2. What is range of efficiency of a Cochran boiler?
a) 50 – 55%
b) 60 – 65%
c) 70 – 75%
d) 80 – 85%
Ans. c
3. What is the shell diameter of a Cochran boiler?
a) 2.00 m
b) 1.50 m
c) 1.00 m
d) 2.75 m
Ans. d
4. In a Simple Vertical boiler, two cross tubes are provided with the fire box. Which of the following statement about the orientation of these tubes is correct?
a) Both of them are vertical
b) Both of them are horizontal
c) Both of them are inclined
d) One is horizontal and the other one is vertical
Ans. c
5. What is the height of a Cochran boiler?
a) 5.79 m
b) 4.10 m
c) 4.26 m
d) 3.50 m
Ans. a
5. What is the steam capacity of a Cornish boiler?
a) 5500 kg/hr
b) 6500 kg/hr
c) 7500 kg/hr
d) 8500 kg/hr
Ans. b
6. How many flue tubes does a Cornish boiler has?
a) One
b) Two
c) Three
d) Four
Ans. a
7. What is the area of the heating surface of a Cochran boiler?
a) 100 m2
b) 120 m2
c) 150 m2
d) 200 m2
Ans. b
8. Cochran boiler is a multi tube boiler.
a) True
b) False
Ans. a
9. What is the maximum working pressure of Cochran boiler?
a) 8 bar
b) 10 bar
c) 15 bar
d) 20 bar
Ans. c
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