Heat Transfer In case of a multipass shell and tube heat exchanger, providing a baffle on the shell side __________ the heat transfer rate. Decreases Does not affect Increases May increase or decrease, depends on the type of baffle Decreases Does not affect Increases May increase or decrease, depends on the type of baffle ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At constant temperature, the thermal conductivities of gases __________ with rise in pressure. May increase or decrease; depends on the pressure Increase Remain unchanged Decrease May increase or decrease; depends on the pressure Increase Remain unchanged Decrease ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Rate of heat transfer by vaporisation from pools of water is affected by the Nature of heating surface and distribution of bubbles Surface tension of water Viscosity of water All of these Nature of heating surface and distribution of bubbles Surface tension of water Viscosity of water All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electro-magnetic spectrum range, which is important for radiation varies from __________ microns. 10 to 100 1 to 100 100 to 1000 0.5 to 50 10 to 100 1 to 100 100 to 1000 0.5 to 50 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The interchange factor for radiation heat transfer from surface 'x' to surface 'y' in case of an infinite parallel planes with emis-sivities εx & εy is given by 1/εx + 1/εy (εx + εy)/(εx + εy - εx . εy) Εx + εy Εx . εy 1/εx + 1/εy (εx + εy)/(εx + εy - εx . εy) Εx + εy Εx . εy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer One kilogram of water at 0°C is changed to superheated steam of one atm pressure and 300° C. The major heat consumption in the process will be to Data insufficient, can To superheat the steam Heat the water from 0°C to 100°C Evaporate the water Data insufficient, can To superheat the steam Heat the water from 0°C to 100°C Evaporate the water ANSWER DOWNLOAD EXAMIANS APP
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