Furnace Technology MCQs

Question 1

The rate of scaling of furnace stock depends upon the

Accepted Answer

All of the above

Answer

Temperature

Answer

Time

Answer

Nature of atmosphere

Question 2

Which of the following is the most suitable for preheating combustion air above 650°C ?

Accepted Answer

Ceramic recuperator

Answer

Regenerator

Answer

Metallic recuperator

Answer

None of these

Question 3

Which of the following is a natural draft furnace?

Accepted Answer

Blast furnace stoves

Answer

Power plant boilers

Answer

Sintering furnace

Answer

None of these

Question 4

Which furnace employs preheating, heating and soaking zones?

Accepted Answer

Reheating furnace

Answer

Soaking pit

Answer

Open hearth furnace

Answer

Cupola

Question 5

Thickness of stock does not affect the fuel economy of furnaces, if the material to be heated is of

Accepted Answer

Both A and B

Answer

Low emissivity

Answer

High thermal conductivity

Answer

Neither A nor B

Question 6

Which is not accomplished in an underfired furnace?

Accepted Answer

Increase in heating capacity/m2 of floor space

Answer

Elimination of cold spot at the bottom of the charge

Answer

Reduction in the temperature of furnace gases

Answer

Portection of the periphery of the charge from excessive radiation

Question 7

Which is a continuous furnace?

Accepted Answer

Glass tank furnace

Answer

Coke ovens

Answer

Annealing furnace

Answer

None of these

Question 8

Which is not a hearth furnace?

Accepted Answer

Cupola

Answer

Glass tank furnace

Answer

Open hearth furnace

Answer

Reheating furnace

Question 9

Which one shows the diagramatic heat balance in a furnace?

Accepted Answer

Sankey diagram

Answer

Cox chart

Answer

Ostwald chart

Answer

None of these