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 In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will Remain unchanged Decrease Increase Either increase or decrease; depends on the coolant flow rate Remain unchanged Decrease Increase Either increase or decrease; depends on the coolant flow rate ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be 0.55 0.85 0.45 0.35 0.55 0.85 0.45 0.35 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In counter flow compared to parallel flow, Both A and B LMTD is greater More surface area is required for a given heat transfer rate Less surface area is required for a given heat transfer rate Both A and B LMTD is greater More surface area is required for a given heat transfer rate Less surface area is required for a given heat transfer rate ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam trap is used to Condense the steam flowing in the pipeline Remove water resulting from partial condensation of steam None of these Stop the supply of steam Condense the steam flowing in the pipeline Remove water resulting from partial condensation of steam None of these Stop the supply of steam ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Presence of a non-condensing gas in a condensing vapour increases the rate of condensation None of the listed here is desirable to increase the film co-efficient decreases thermal resistance increases the rate of condensation None of the listed here is desirable to increase the film co-efficient decreases thermal resistance ANSWER DOWNLOAD EXAMIANS APP
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