For radiant heating around 2250°C, the heating elements are made of____________?

Related Mcqs:

By which of the following methods the temperature inside arc nace can be varied ?

A. By disconnecting some of the heating elements B. By varying the operating voltage C. By varying the current through heating elements D. By any of the above method...

In an electric room heat convector the method of heating used is______________?

A. arc heating B. resistance heating C. induction heating D. dielectric heating...

Radiant heating is used for which of the following ?

A. Annealing of metals B. Melting of ferrous metals C. Heating of liquids in electric kettle D. Drying of paints and varnishes...

Direct arc furnaces have which of the following power factors ?

A. Unity B. Low, lagging C. Low, leading D. Any of the above...

Resistance variation method of temperature control is done by connecting resistance elements in_____________?

A. series B. parallel C. series-parallel connections D. star-delta connections E. all of the above ways...