Direct arc furnaces have which of the following power factors ?

Related Mcqs:

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...

Which of the following has the highest value of thermal conductivity ?

A. Water B. Steam C. Sold ice D. Melting ice...

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...

In a domestic cake baking oven the temperature is controlled by________________?

A. voltage variation B. thermostat C. auto-transformer D. series-parallel operation...

Properly of low temperature co-eflficient of heating element is desired due to which of the following reasons ?

A. To avoid initial rush of current B. To avoid change in kW rating with temperature C. Both (A) and (B) D. Either (A) or (B)...