Heat Transfer Which of the following parameters is increased by use of finned tube in a multipass shell and tube heat exchanger? Tube side pressure drop and the heat transfer rate Effective tube surface area for convective heat transfer All of these Convective heat transfer co-efficient Tube side pressure drop and the heat transfer rate Effective tube surface area for convective heat transfer All of these Convective heat transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Walls of a cubical oven are of thickness l, and they are made of material of thermal conductivity k. The temperature inside the oven is 100°C and the inside heat transfer co-efficient is 3k/l. If the wall temperature on the outside is held at 25°C, what is the inside wall temperature in degree centigrade? 43.75 35.5 81.25 48.25 43.75 35.5 81.25 48.25 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone. highly turbulent transition laminar None of the listed here highly turbulent transition laminar None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If heat transfer rate varies with the time, it is termed as Steady state conduction Forced convection Monochromatic radiation None of these Steady state conduction Forced convection Monochromatic radiation None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Maximum heat transfer rate is achieved in __________ flow. Counter-current Turbulent Co-current Laminar Counter-current Turbulent Co-current Laminar ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The most conducive surface for dropwise condensation to occur is the __________ surface. Smooth Oily Coated Glazed & polished Smooth Oily Coated Glazed & polished ANSWER DOWNLOAD EXAMIANS APP
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