Heat Transfer A body is called grey if the monochromatic emissivity of the body is Same for all wavelengths Unity Zero Different for all wavelengths Same for all wavelengths Unity Zero Different for all wavelengths ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In pipe flow, heat is transferred from hot wall to the liquid by Forced convection only Forced convection and conduction Conduction only Free and forced convection Forced convection only Forced convection and conduction Conduction only Free and forced convection ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which type of heat exchanger is preferred for heavy heat loads ? Double pipe Series and parallel set of shell and tube Plate fine None of the listed here Double pipe Series and parallel set of shell and tube Plate fine None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 1 0.95 0.78 1 0.95 0.78 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At constant temperature, the thermal conductivities of gases __________ with rise in pressure. Remain unchanged Decrease Increase May increase or decrease; depends on the pressure Remain unchanged Decrease Increase May increase or decrease; depends on the pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will Decrease by 22 Increase by 216 Increase by 1.8 times Remain unchanged Decrease by 22 Increase by 216 Increase by 1.8 times Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
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