FURNACE TECHNOLOGY QUIZ

__________ furnace is not an electric furnace.

Induction

Pot

Arc

Resistance

TRUE ANSWER : ?
YOUR ANSWER : ?

Higher furnace temperature can not be achieved by use of a lean fuel gas in the furnace by

Preheating the fuel gas

Increasing the draft in the furnace

Preheating the combustion air

Oxygen enrichment of combustion air

TRUE ANSWER : ?
YOUR ANSWER : ?

Air filtration in a furnace

Reduces its thermal efficiency

Increases the flue gas temperature

None of these

Is indicated by flame sting out

TRUE ANSWER : ?
YOUR ANSWER : ?

hich is the most thermally efficient furnace?

Rotary kilns

Reheating furnace

Reverberatory furnace

Boiler furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Cement Kiln is a

Batch furnace

Rotary Kiln

Natural draft furnace

Tunnel Kiln

TRUE ANSWER : ?
YOUR ANSWER : ?

Maximum thermal efficiency of boiler may be about __________ percent.

10

25

65

90

TRUE ANSWER : ?
YOUR ANSWER : ?

Oxygen enrichment of combustion air does not result in increase of the

Oxygen in the flue gas

Stack loss

Heat transfer rate in the furnace

Flame temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

Furnace pressure is normally controlled by regulating the

Fuel gas pressure

Speed of I.D. fan

Damper

Air pressure

TRUE ANSWER : ?
YOUR ANSWER : ?

The rate of scaling of furnace stock depends upon the

Nature of atmosphere

Time

All of these

Temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

Reducing atmosphere is maintained in a

Calcination kiln

L.D. converter

Blast furnace

Soaking pit

TRUE ANSWER : ?
YOUR ANSWER : ?

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