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Furnace Technology

Furnace Technology
Which of the following is a heat treatment furnace?

Muffle furnace
Rotary kiln
Annealing furnace
Reheating furnace

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Furnace Technology
Furnace pressure is normally controlled by regulating the

Damper
Air pressure
Speed of I.D. fan
Fuel gas pressure

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Furnace Technology
Pulverised fuel fired furnaces employ __________ fuel firing.

All of these
Horizontal
Vertical
Tangential

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Furnace Technology
Ingress of cold air in the furnaces through cracks, charging doors, openings etc.

All of these
Reduces the flue gas temperature and makes the furnace atmosphere oxidising
Increases the load on the induced draft fan
Reduces the furnace draught

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Furnace Technology
Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent.

25-30
65-70
45-50
44119

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Furnace Technology
In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time?

Regenerator
Recuperator
Waste heat boiler
None of these

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