Heat Transfer The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as Ha= 5hL Ha = hL Ha = 0.8hL Ha = 2hL Ha= 5hL Ha = hL Ha = 0.8hL Ha = 2hL ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the total emissivity of conductors Decreases Decreases linearly Remains same Increases Decreases Decreases linearly Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer While the total emissivity of a perfect black body is unity, the same for a real body is >1 between 0 and 1 0 1 >1 between 0 and 1 0 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is Parallel flow with process stream on tube side Counter flow with process stream on shell side Counter flow with process stream on tube side Parallel flow with process stream on shell side Parallel flow with process stream on tube side Counter flow with process stream on shell side Counter flow with process stream on tube side Parallel flow with process stream on shell side ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it Increases the overall heat transfer coefficient Decreases the pressure drop None of these Decreases the outlet temperature of cooling medium Increases the overall heat transfer coefficient Decreases the pressure drop None of these Decreases the outlet temperature of cooling medium ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Controlling heat transfer film co-efficient is the one, which offers __________ resistance to heat transfer. no the largest the least lower no the largest the least lower ANSWER DOWNLOAD EXAMIANS APP
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