Thermal conductivity of solid metals with rise in temperature normally___________________?

Related Mcqs:

When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by __________________?

A. conduction B. convection C. radiation D. conduction and convection E. convection and radiation...

Thermal conductivity of air with rise in temperature__________________?

A. increases B. decreases C. remains constant D. may increase or decrease depending on temperature E. none of the above...

Thermal conductivity of wood depends on_______________?

A. moisture B. density C. temperature D. all of the above E. none of the above...

The value of Prandtl number for air is about _______________________?

A. 0.1 B. 0.3 C. 0.7 D. 1.7 E. 10.5...

A perfect black body is one which_______________?

A. is black in colour B. reflects all heat C. transmits all heat radiations D. abslprbs heat radiations of all wave lengths falling on it E. fully opaque...