Heat transfer takes place as per ________________?

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...

Film coefficient is defined as Inside diameter of tube________________?

A. Equivalent thickness of film B. Thermal conductivity Equivalent thickness of film Specific heat x Viscocity C. Thermal conductivity Molecular diffusivity of momentum Thermal diffusivity D. Film coefficient x Inside diameter Thermalconductivity E. none of the above...

Joule sec is the unit of_________________?

A. universal gas constant B. kinematic viscosity C. thermal conductivity D. Planck’s constant E. none of the above...

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...