Related Questions

Sand is dried in foundaries in a___drier.
A Rotary
B Fluidisedbed
C Vacuum
D Spray
This is used in applications for nonferrous construction:
A Copper tubing
B Steel pipe
C PVC pipe
D Iron tubing
The casting method adopted for ornaments and toys of nonferrous alloys, is
A Permanent mould casting
B Slush casting
C Die casting
D Centrifugal casting
The trade name of a nonferrous cast alloy composed of cobalt, chromium and tungsten is called
A Ceramic
B Stellite
C Diamond
D Cemented carbide
Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns.
A 1800
B 2200
C 2400
D 2700
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

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