The unit of overall coefficient of heat transfer is___________________?

Related Mcqs:

Unit of thermal conductivity in S.I. units is__________________?

A. J/m2 sec B. J/m °K sec C. W/m °K D. A. and C. above E. B. and C. above...

Total heat is the heat required to__________________?

A. change vapour into liquid B. change liquid into vapour C. increase the temperature of a liquid or vapour D. convert water into steam and superheat it E. convert saturated steam into dry steam...

In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by___________________?

A. convection B. radiation C. conduction D. both convection and conduction E. none of the above...

In counter flow heat exchangers_________________?

A. both the fluids at inlet (of heat ex¬changer where hot fluid enters) are in their coldest state B. both the fluids at inlet are in their hot¬test state C. both the fluids .at exit are in their hottest state D. one fluid is in hottest state and other in coldest state at inlet E. … In counter flow heat exchangers_________________?Read More...

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...