FURNACE TECHNOLOGY QUIZ

Unit of furnace loading is

Ton stock/hr

Ton stock/hr/m² hearth area

Both B and C

Ton stock/m² hearth area

TRUE ANSWER : ?
YOUR ANSWER : ?

Regenerators are installed in

Neither A nor B

Both A & B

Open hearth furnace

Coke ovens

TRUE ANSWER : ?
YOUR ANSWER : ?

Maximum thermal efficiency of boiler may be about __________ percent.

10

90

65

25

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Kcal/m³ combustion space

Kcal/hr

None of these

Kcal/hr/m³ combustion space

TRUE ANSWER : ?
YOUR ANSWER : ?

An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace.

Arc

Resistance

Low frequency induction

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a natural draft furnace?

Sintering furnace

Power plant boilers

None of these

Blast furnace stoves

TRUE ANSWER : ?
YOUR ANSWER : ?

In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the

Thermal conductivity of the charge & structural materials of furnace

Rate of firing and emissivity of flame

Nature of process ; whether batch, continuous or intermittant

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a

Furnace employing neutral atmosphere

Furnace employing negative pressure

Carbon resistance furnace

Reducing atmosphere

TRUE ANSWER : ?
YOUR ANSWER : ?

An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.

Rotary hearth

Shaft

Walking beam

Tunnel

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Flame temperature

Stack loss

Oxygen in the flue gas

Heat transfer rate in the furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

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