Related Questions

For the same draught produced the power of induced draught fan as compared to forced draught fan is
A less
B more
C same
D not predictable
Power required in case of forced draught as compared to induced draught (for the same draught produced) is
A Same
B Less
C More
D Either more or less; depends on the flue gas density
A balanced draught boiler furnace employs __________ draught fan.
A Induced
B Forced
C Both A & B
D Neither A nor B
Which one is not an induced draught furnace?
A Blast furnace stove
B Sintering furnace
C High pressure boiler
D None of these
The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace.
A Arc
B Resistance
C Low frequency induction
D High frequency induction
The capacity of induced draft fan compared to forced draft fan in a boiler is
A Same
B More
C Less
D Less or more depending on size of boiler
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
B Induced draught
C Forced draught
D Balanced draught
The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as
A Efficiency of the boiler
B Efficiency of the chimney
C Efficiency of the fan
D Power of the boiler
Draught produced by a tall chimney due to density difference between hot flue gas inside the Chimney and atmospheric air outside the chimney is more appropriately known as the __________ draught.
A Natural
B Induced
C Forced
D Chimney
For forced draught system, the function of chimney is mainly
A to produce draught to accelerate the combustion of fuel
B to discharge gases high up in the atmosphere to avoid hazard
C to reduce the temperature of the hot gases discharged
D none of the above

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