Heat Transfer With the increase of temperature, the Col-burn jH factor May increase or decrease ; depending on temperature Increases Remains unchanged Decreases May increase or decrease ; depending on temperature Increases Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is Finned tube heat exchanger with air inside and steam outside Finned tube heat exchanger with air outside and steam inside Shell and tube heat exchanger with air on shell side and steam inside tubes Shell and tube heat exchanger with air inside tubes and steam on shell side Finned tube heat exchanger with air inside and steam outside Finned tube heat exchanger with air outside and steam inside Shell and tube heat exchanger with air on shell side and steam inside tubes Shell and tube heat exchanger with air inside tubes and steam on shell side ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by Painting the surface white (with aluminium paint) Giving the surface a mirror finish Roughening the surface Painting the surface black Painting the surface white (with aluminium paint) Giving the surface a mirror finish Roughening the surface Painting the surface black ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a multipass shell and tube heat exchanger, providing a baffle on the shell side __________ the heat transfer rate. Decreases May increase or decrease, depends on the type of baffle Does not affect Increases Decreases May increase or decrease, depends on the type of baffle Does not affect Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivities of most of the liquids __________ with rise in temperature. May increase or decrease; depends on the liquid Remains unchanged Decreases Increases May increase or decrease; depends on the liquid Remains unchanged Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiator of an automobile engine is a __________ type of heat exchanger. Direct contact Co-current Counter-current Cross-current Direct contact Co-current Counter-current Cross-current ANSWER DOWNLOAD EXAMIANS APP
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