Heat Transfer In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is None of these Hyperbolic Parabolic Linear None of these Hyperbolic Parabolic Linear ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A cube, sphere & a thin circular plate (all having same mass and made of same material) are all heated to 300°C and allowed to cool in natural air. Which one will cool the slowest ? Sphere Cube Plate All of these Sphere Cube Plate All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The purpose of floating head in a heat exchanger is to Facilitate its lengthening, if needed Provide support for tubes Decrease the pressure drop Avoid buckling of tubes Facilitate its lengthening, if needed Provide support for tubes Decrease the pressure drop Avoid buckling of tubes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m².°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be Less than that of the uninsulated steam pipe Less than the steam pipe with 5 cms insulation Greater than that for uninsulated steam pipe Equal to that of the uninsulated steam pipe Less than that of the uninsulated steam pipe Less than the steam pipe with 5 cms insulation Greater than that for uninsulated steam pipe Equal to that of the uninsulated steam pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Value of Prandtl number for water ranges from L to 2 100 to 500 5 to 10 1000 to 2000 L to 2 100 to 500 5 to 10 1000 to 2000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a vertical tube evaporator, with increase in the liquor level, the Capacity of the evaporator is increased Capacity of the evaporator is decreased True temperature drop increases Both B and C Capacity of the evaporator is increased Capacity of the evaporator is decreased True temperature drop increases Both B and C ANSWER DOWNLOAD EXAMIANS APP
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