In direct arc furnace, which of the following has high value ?

Related Mcqs:

_________ has the highest value of thermal conductivity?

A. Copper B. Aluminium C. Brass D. Steel...

method has leading power factor____________?

A. Resistance heating B. Dielectric heating C. Arc heating D. Induction heating...

A non-dimensional number generally associated with natural convection heat transfer is____________?

A. Prandtl number B. Grashoff number C. Pecelet number D. Nusselt number...

In arc furnace the function of choke is______________?

A. to stabilize the arc B. to imprpve, power factor C. to reduce severity of the surge D. none 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...