FURNACE TECHNOLOGY QUIZ

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

45-50

65-70

44119

25-30

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ is an indirectly heated furnace.

Soaking pit

Reheating furnace

Open hearth furnace

Muffle furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Heat transfer rate to the charge/stock in a furnace does not depend upon the

Type of fuels viz solid, liquid or gaseous

Flue gas temperature

Emissivity of refractory walls

Initial temperature of the charged stock

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a batch furnace?

Reheating furnace

Cupola

Glass tank furnace

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Regenerators are normally provided in the

By product coke ovens

All of these

Open hearth furnace

Glass melting furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the

Physical nature, ash content and fineness of the coal

Amount of excess air supplied and load on the boiler

Type of burner and combustion chamber

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The rate of scaling of furnace stock depends upon the

Time

Temperature

All of these

Nature of atmosphere

TRUE ANSWER : ?
YOUR ANSWER : ?

Main gas valve in a gaseous fuel burner is a __________ valve.

Gate

Butterfly

Globe

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a natural draft furnace?

Blast furnace stoves

None of these

Power plant boilers

Sintering furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Blast furnace stoves are meant for heating

Blast furnace gas

Air

Steam

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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