Electrical Engineering Questions And Answers :: Heating And Welding: part1

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Electrical Engineering : Heating And Welding QUESTIONS AND ANSWERS :: part1 : 1 to 5

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2014 and IES 2014 examinations :

1.Which of the following methods of heating is not dependent on the frequency of supply ?

Induction heating
Dielectric heating
Electric resistance heating
All of the above

2.The material of the heating element for a furnace should have

lower melting point
higher temperature coefficient
high specific resistance
all of the above

3.For the transmission of heat from one body to another

temperature of the two bodies must be different
both bodies must be solids
both bodies must be in contact
at least one of the bodies must have some source of heating

4.Which of the following will happen if the thickness of refractory wall of furnace is increased ?

Heat loss through furnace wall will increase
Temperature inside the furnace will fall
Temperature on the outer surface of furnace walls will drop
Energy consumption will increase

5.When a body reflects entire radiation incident on it, then it is known as

white body
grey body
black body
transparent body

More Heating And Welding QUESTIONS AND ANSWERS available in next pages

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