Thermonic emission occurs in______________?

Related Mcqs:

highest conductivity_____________?

B. lowest temperature co-efficient C. good mechanical strength D. good corrosion resistance E. easy solderable and drawable quality F. all of the above...

The transition temperature of mercury is____________?

A. 18.0°K B. 9.22°K C. 4.12°K D. 1.14’K...

Total number of crystal systems is____________?

A. 2 B. 4 C. 7 D. 12...

Carbon resistors are used extensively because they are____________?

A. easy to make B. compact C. inexpensive D. all of the above reasons...

Due to which of the following fact, in India, aluminium is replacing copper ?

A. Aluminium is more ductile and malleable than copper B. Aluminium is available in plenty, cheaper and lighter than copper C. Aluminium has lower resistivity than that of copper D. Aluminium has less temperature co-efficient than copper...