Steam boiler | Steam boiler Objective Type Questions and answers
36. The efficiency of the plant.....with the mechanical draught
A.Increases
B.Decreases
C.Remain constant
D.None of the above
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A.Increases
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37. The mechanical draught......the amount of smoke
A.Increases
B.Decreases
C.Does not effect
D.Remain same
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38. The chimney draught varies with........
A.Climatic condition
B.Temperature of furnace gases
C.Height of chimney
D.All of the above
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39. The draught produced by a steam jet issuing from a nozzle placed in the chimney,is called........
A.Induced steam jet draught
B.Forced steam jet draught
C.Chimney draught
D.None of the above
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35. The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught.Such a draught is called ......
A.Natural draught
A.Induced draught
C.Forced draught
D.Balanced draught
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