Which of the following variables affects the furnace capacity? Temperature of flue gas All of these Thermal conductivity of stock Thickness of heating stock TRUE ANSWER : ? 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 TRUE ANSWER : ? 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 TRUE ANSWER : ? YOUR ANSWER : ?
Reheating furnace (pusher type) is used for heating Ingots Steel coils Steel sheets Slabs TRUE ANSWER : ? YOUR ANSWER : ?
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 TRUE ANSWER : ? 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 TRUE ANSWER : ? YOUR ANSWER : ?
If fuel and air are mixed ahead of the burner, it is called a/an __________ burner. Rotary Outside mixing type Premix Diffusion TRUE ANSWER : ? YOUR ANSWER : ?
__________ atmosphere is maintained inside an iron blast furnace. Inert Decarburising Oxidising Reducing TRUE ANSWER : ? YOUR ANSWER : ?
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 TRUE ANSWER : ? 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 : ?