Related Questions

Turndown ratio of a gas burner is equal to the
A Maximum to minimum heat input ratio
B Maximum to minimum permissible gas flow rate
C Both A & B
D Minimum to maximum heat input ratio
Bunsen burner is an example of a/an __________ burner.
A inside mixing/premix type
B submerged combustion
C rotary cup
D outside mixing/diffusion flame/nozzle mix type
If fuel and air are mixed ahead of the burner, it is called a/an __________ burner.
A Premix
B Outside mixing type
C Rotary
D Diffusion
Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.
A 50
B 70
C 90
D 140
Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.
A Low amount of excess combustion air
B Large quantity of excess combustion air
C Hydrocarbon fuel
D Pulverised coal as fuel
The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace.
A Arc
B Resistance
C Low frequency induction
D High frequency induction
An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace.
A Resistance
B Arc
C Low frequency induction
D None of these
An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.
A Walking beam
B Shaft
C Tunnel
D Rotary hearth
__________ furnace is not an electric furnace.
A Arc
B Induction
C Pot
D Resistance
Operation of blast furnace stove is based on the principles of a __________ furnace.
A Regenerative
B Recuperative
C Both A and B
D Neither A nor B

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