Question 1.The capacity of induced draft fan compared to forced draft fan in a boiler is ……….
A. Same
B. More
C. Less
D. Depending upon size of boiler
Ans. B
Question 2.O2 content in atmospheric air on volume basis is …………
A. 21%
B. 23%
C. 30%
D. 78%
Ans. A
Question 3.Scale is formed on heat transfer surface when………………..
A. Water is acidic
B. Water is alkaline
C. Water contains dissolved gases
D. Water contains dissolved calcium and magnesium salts.
Ans. D
Question 4.Which one of the following fuel has the highest hydrogen content and lowest sulphur content ……………
A. Coal
B. Furnace oil
C. Natural gas
D. LSHS
Ans. C
Question 5.For boiler water treatment chemical dosing with small discharge at high pressure, pump preferred is …………
A. Centrifugal
B. Axil flow
C. Propeller
D. Reciprocating
Ans. D
Question 6.High % of carbon monoxide presence in the flue gas of boiler is an indicator of ……………
A. Complete combustion
B. Good control of pollutants
C. Low excess air
D. High excess air
Ans. C
Question 7.Thermal power plant with Steam Turbine Operates on ………..
A. Carnot Cycle
B. Otto Cycle
C. Brayton Cycle
D. None of the above
Ans. D
Question 8.During hot banking, boiler is kept in ………..
A. Depressurised Condition
B. Pressurised Condition
C. High air flow condition
D. Firing Condition
Ans. B
Question 9.Which condition leads to boiler starvation?
A. Non availability of load in running boiler
B. Non availability of coal in running boiler
C. Non availability of feed water in running boiler
D. None of the above
Ans. C
Question 10.Thermocouple is used for……….
A. Measurement of steam flow
B. Measurement of differential pressure
C. Measurement of thermal expansion
D. None of the above
Ans. D
Also Read :
Boiler Operation Engineer ( BOE ) Previous Year Multiple Choice Questions With Answer Set -1
Boiler Operation Engineer ( BOE ) Previous Year Multiple Choice Questions With Answer Set - 2
Boiler Operation Engineer ( BOE ) Previous Year Multiple Choice Questions With Answer Set -3
Boiler Operation Engineer ( BOE ) Previous Year Multiple Choice Questions With Answer Set -4
Boiler Operation Engineer ( BOE ) Previous Year Multiple Choice Questions With Answer Set -5
Boiler Operation Engineer ( BOE ) Previous Year Multiple Choice Questions With Answer Set -6
Boiler Operation Engineer ( BOE ) Previous Year Multiple Choice Questions With Answer Set -7
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