Question 1. Which is the common coal firing system used in Indian thermal power plant
A. stoker firing
B. pulverised coal firing
C. pressurised bed
D. fluidised bed
Ans. B
Question 2. Deaeration of boiler feed water is referred to us
A. removal of scales by blow down
B. removal of silica
C. removal of dissolved gases
D. phosphate treatment of feed water
Ans. C
Question 3. In industrial applications the type of trap used for main steam lines
A. thermodynamic
B. bimetallic
C. float
D. thermostatic
Ans. A
Question 4. Proper sizing of steam pipeline helps in minimising
A. steam requirement
B. pressure drop
C. temperature drop
D. boiler efficiency
Ans. B
Question 5. The Turndown ratio' for oil fired boiler burners is the ratio of
A. air to fuel
B. maximum fuel input to actual fuel inputs
C. maximum air input over minimum air input
D. maximum fuel input over minimum fuel input
Ans. D
Question 6. Which fuel requires the lowest amount of excess air for combustion
A. natural gas
B. Furnace oil
C. bagasse
D. pulverised coal
Ans. A
Question 7. The rise in conductivity of boiler feed water indicates
A. drop in the TDS of feed water
B. thermal conductivity of water
C. alkalinity of water
D. rise in the TDS of feed water
Ans. D
Question 8. Super heating of steam is done at
A. Constant Volume
B. Constant Temperature
C. Constant Pressure
D. Constant Enthalpy
Ans. C
Question 9. Efficiency of a thermal cycle increases by
A. Regeneration
B. Reheating of steam
C. Both a & b
D. None of the above
Ans. C
Question 10. Ultimate analysis of fuel determine the percentage of
A. Carbon, Hydrogen, Nitrogen, Sulphur, moisture
B. Fixed carbon, ash volatile matter , moisture
C. Higher calorific value
D. Lower calorific value
Ans. A
Also Read :
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 -1
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Boiler Operation Engineer ( BOE ) Previous Year Multiple Choice Questions With Answer Set -5
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BOE (Boiler Operation Engineer) Previous Year Exam Questions And Answers Set - 8
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