Question 1. Bed slumping is done in AFBC Boiler to
A. Reduce Pressure
B. Reduce temperature
C. Reduce load
D. Maintain bed temperature
Ans. C
Question 2. Mobrey switch is used to
A. Control drum level
B. Control fuel flow
C. Control air flow
D. Control fan speed
Ans. A
Question 3. Scoop tube control is used in feed pump to
A. Control Vibration
B. Current measurement
C. Control PH of feed water
D. Control drum level
Ans. D
Question 4. For easy storage of bagasse
A. Bagasse is air dried
B. Baling is done
C. Bagasse is washed
D. Water is sprayed
Ans. B
Question 5. Oil burner is used in Pulverised boiler to –
A. To reduce soot formation
B. To reduce coal consumption
C. Stabilise the flame during low load and provide ignition energy during start up
D. To increase reheat steam temperature
Ans. C
Question 6. Air vent is provided at boiler steam drum to remove air from boiler
A. During high pressure condition
B. During initial up and startup
C. During load change
D. During high furnace pressure
Ans. B
Question 7. To prevent overheating of superheater tube during starting.
A. More air is supplied to boiler
B. Furnace draft is kept more
C. Cold water is supplied to boiler
D. Start up vent is kept open till loading of boiler
Ans. D
Question 8. Soot blowing is carried out in sequential order
A. In any direction
B. In the direction opposite to flue gas flow
C. In the direction of flue gas flow.
D. Alternatively in any direction
Ans. C
Question 9. ESP uses --------------- principle to remove fly ash from flue gas
A. Electrostatic
B. Electromagnetic
C. Velocity change
D. Volume change
Ans. A
Question 10. Acidic or Alkaline nature of boiler water is indicated by
A. TDS
B. M-alkalinity
C pH
D. Conductivity
Ans. C
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