For heating element high resistivity material is chosen to______________?

Related Mcqs:

Heat transfer by condition will not occur when____________?

A. bodies are kept in vacuum B. bodies are immersed in water C. bodies are exposed to thermal radiations D. temperatures of the two bodies are identical...

The material of the heating element for a furnace should have___________?

A. lower melting point B. higher temperature coefficient C. high specific resistance D. all of the above...

The temperature inside a furnace is usually measured by which of the following ?

A. Optical pyrometer B. Mercury thermometer C. Alcohol thermometer D. Any of the above...

Due to which of the following reasons it is desirable to have short arc length ?

A. To achieve better heating B. To increase the life of roof refractory C. To have better stirring action D. To reduce problem of oxidation E. All of the above...

Which of the following methods is used to control temperature in resistance furnaces ?

A. Variation of resistance B. Variation of voltage C. Periodical switching on and off of the supply D. All of the above methods...