FURNACE TECHNOLOGY QUIZ

Shaft furnaces are used for

All of these

Roasting

Smelting

Calcining

TRUE ANSWER : ?
YOUR ANSWER : ?

To reduce the stack loss, heat recovery from flue gas can be done by

Preheating of combustion air

Steam generation in waste heat boilers

Preheating of cold stock

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The rate of scaling of furnace stock depends upon the

Temperature

Nature of atmosphere

Time

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The method of Lobo and Evans is concerned with the calculation of the

Heat transfer by forced convection in a reboiler

Heat absorption in radiant section of a furnace

Heat transfer in vacuum condensers

Mass transfer co-efficient

TRUE ANSWER : ?
YOUR ANSWER : ?

Air filtration in a furnace

Increases the flue gas temperature

Is indicated by flame sting out

Reduces its thermal efficiency

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Power required in case of forced draught as compared to induced draught (for the same draught produced) is

More

Either more or less; depends on the flue gas density Answer: Option B

Less

Same

TRUE ANSWER : ?
YOUR ANSWER : ?

The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace.

Resistance

Arc

High frequency induction

Low frequency induction

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Butterfly

None of these

Globe

Gate

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ is an indirectly heated furnace.

Reheating furnace

Open hearth furnace

Soaking pit

Muffle furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

In producer gas making furnace, steam is added along with air to mainly control the

Fusion of coal ash & clinker formation

V. of producer gas

Temperature of producer gas

Tar content in producer gas

TRUE ANSWER : ?
YOUR ANSWER : ?

↑