1000+ Electric Heating & Welding MCQ Questions and Answers - 2

Question: 6

In induction heating ______ is abnormally high.

(A) voltage

(B) current

(C) frequency

(D) phase angle

Question: 7

Induction heating process is based on which of the following principles?

(A) electro-magnetic induction principle

(B) resistance heating principle

(C) nucleate heating principle

(D) thermal ion release principle

Question: 8

In an electric press mica is used

(A) for induction heating

(B) for dielectric heating

(C) as a device for power factor improvement

(D) as an insulator

Question: 9

In electric press, mica is used because it is _____ conductor of heat but and _____ conductor of electricity.

(A) good, good

(B) good, bad

(C) bad, bad

(D) bad, good

Question: 10

______ has the highest value of thermal value conductivity.

(A) steel

(B) brass

(C) aluminium

(D) copper