In a resistance furnace the atmosphere is_____________?

Related Mcqs:

method has leading power factor____________?

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

A perfect black body is one that_____________?

A. transmits all incident radiations B. absorbs all incident radiations C. reflects all incident radiations D. absorbs, reflects and transmits all incident radiations...

By the use of which of the following, high frequency power supply for induction furnaces can be obtained ?

A. Coreless transformers B. Current transformers C. Motor-generator set D. Multi-phase transformer...

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...

Radiations from a black body are proportional to____________?

A. T1 B. T2 C. T3 D. T*...