FURNACE TECHNOLOGY QUIZ

Which of the following variables affects the furnace capacity?

Temperature of flue gas

All of these

Thermal conductivity of stock

Thickness of heating stock

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YOUR ANSWER : ?

Presence of SO₂ in furnace gases attacks the ferrous metal by way of

All of these

Causing metal embrittlement

Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature

Accelerating the rate of scaling

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YOUR ANSWER : ?

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

Neither A nor B

High thermal conductivity

Low emissivity

Both A and B

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YOUR ANSWER : ?

Reheating furnace (pusher type) is used for heating

Ingots

Steel coils

Steel sheets

Slabs

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The heating capacity of continuous reheating furnace depends upon the

Hearth area and furnace temperature

All of these

Emissivity of the stock

Ratio of wall surface to stock surface

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YOUR ANSWER : ?

Which furnace employs an I.D. fan for the removal of flue gases from the furnace?

High pressure boiler

Coke oven

Beehive coke oven

Blast furnace stoves

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YOUR ANSWER : ?

If fuel and air are mixed ahead of the burner, it is called a/an __________ burner.

Rotary

Outside mixing type

Premix

Diffusion

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__________ atmosphere is maintained inside an iron blast furnace.

Inert

Decarburising

Oxidising

Reducing

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Rate of heat release in a furnace, which is the measure of heat intensity is defined as

Kcal/hr

None of these

Kcal/hr/m³ combustion space

Kcal/m³ combustion space

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YOUR ANSWER : ?

Which one is not an induced draught furnace?

Sintering furnace

None of these

High pressure boiler

Blast furnace stove

TRUE ANSWER : ?
YOUR ANSWER : ?

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