Related Questions

Reverberatory furnace is used for
A Roasting/reduction of ores
B Annealing steel coil
C Heating air
D Steel melting
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
In salt bath furnace, heat is transferred to the charge mainly by
A Conduction
B Convection
C Radiation
D None of these
__________ is an indirectly heated furnace.
A Open hearth furnace
B Muffle furnace
C Soaking pit
D Reheating furnace
An example of indirectly heated furnace is the
A Soaking pit
B Muffle furnace
C Reheating furnace
D None of these
Example of an indirectly heated furnace is
A Hood annealing furnace
B Muffle furnace
C Both A and B
D Neither A nor B
Air at a particular humidity is heated in a furnace. The new dew point
A Decreases
B Increases
C Depends on the extent of heating
D Remain unchanged
A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.
A Salt & coke
B Sand & coke
C And coke
D And sand
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
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

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