Test: Heat Transfer - 6 - Mechanical Engineering MCQ
25 Questions MCQ Test Heat Transfer - Test: Heat Transfer - 6
Among liquids, water has a comparatively high value of thermal conductivity, due to its
Reynold's analogy states that (where, St = Stanton number f = friction factor)
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For evaporation of viscous solution in a multiple effect evaporator, the prefered feeding scheme is
The film thickness for laminar film condensation on vertical surface __________ from top to bottom.
The sum of reflectivity and absorptivity for an opaque body is equal to
In case of a multipass shell and tube heat exchanger, providing a baffle on the shell side __________ the heat transfer rate.
The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness)
Heat transfer co-efficient (h1) for liquids increases with
A diathermaneous substance __________ the thermal radiation completely.
A hot body will radiate heat most rapidly, if its surface is
Evaporation of 1kg of water from a solution in a single effect evaporator requires about __________ kg of steam.
A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m2.K. The Biot number is
Analogy between mass and heat transfer is not applicable in case of
A __________ surface has the maximum thermal emissivity out of the following.
Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.)
Evaporation of 1kg of water from a solution in a single effect evaporator requires about __________ kg of steam.
A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m2.K. The Biot number is
Analogy between mass and heat transfer is not applicable in case of
A __________ surface has the maximum thermal emissivity out of the following.
Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.)
Evaporation of 1kg of water from a solution in a single effect evaporator requires about __________ kg of steam.
A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m2.K. The Biot number is
Analogy between mass and heat transfer is not applicable in case of
A __________ surface has the maximum thermal emissivity out of the following.
Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.)
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57 videos|77 docs|86 tests
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