Heating And Welding MCQ Questions & Answers | Electrical Engineering

A. The amount of heat generated can be controlled accurately

B. Heat at very high rate can be generated

C. The area of the surface over which heat is produced can be accurately controlled

D. All of the above

A. To avoid initial rush of current

B. To avoid change in kW rating with temperature

C. Both (A) and (B)

D. Either (A) or (B)

A. Inside boiler furnaces

B. During melting of ice

C. Through the surface of the insulted pipe carrying steam

D. From refrigerator coils to freezer of a refrigerator

A. Copper alloy

B. Carbon

C. Tungsten alloy

D. Stainless steel alloy

A. Induction heating of steel

B. Dielectric heating

C. Induction heating of brass

D. Resistance heating

A. Induction heating

B. Dielectric heating

C. Electric resistance heating

D. All of the above

A. To stabilize the arc

B. To improve power factor

C. To reduce severity of the surge

D. None of the above

A. Insulating materials

B. Conducting materials which are magnetic

C. Conducting materials which are non-magnetic

D. Conducting materials which may or may not be magnetic

A. Copper

B. Aluminium

C. Brass

D. Steel

A. Water

B. Steam

C. Solid ice

D. Melting ice