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 2024 and IES 2024 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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