Related Questions

The main advantage of forced draft over natural draft is that
A Combustion of fuel is complete
B Smaller height chimney can be used
C Furnace control is easier
D All of the above
Which furnace employs natural draft?
A Coke oven
B Boiler
C Rotary kilns
D L.D. converter
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 balanced draft furnace is one using
A Induced draft fan and chimney
B Induced draft fan and forced draft fan
C Forced draft fan and chimney
D Any one of the above
Which furnace employs an I.D. fan for the removal of flue gases from the furnace?
A Coke oven
B Blast furnace stoves
C Beehive coke oven
D High pressure boiler
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
Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of
A Graphite powder
B Thoria
C Zircon powder
D Beryllium
Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.
A Low amount of excess combustion air
B Large quantity of excess combustion air
C Hydrocarbon fuel
D Pulverised coal as fuel
An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace.
A Resistance
B Arc
C Low frequency induction
D None of these
An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.
A Walking beam
B Shaft
C Tunnel
D Rotary hearth

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