Heat Transfer The overall resistance for heat transfer through a series of flat resistance, is the __________ of the resistances. Average Product Geometric mean Sum Average Product Geometric mean Sum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is generally considered as opaque surface towards radiations? Both solids & liquids Solids Gases Liquids Both solids & liquids Solids Gases Liquids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For what value of Prandtl number, the Col-burn analogy is valid ? l to 50 1 to 103 0.6 to 120 0.06 to 120 l to 50 1 to 103 0.6 to 120 0.06 to 120 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the Minimum resistance presents in the series Maximum resistance in the series Average of all resistances Sum of all resistances Minimum resistance presents in the series Maximum resistance in the series Average of all resistances Sum of all resistances ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a cooling tower, water becomes cool by Vaporisation due to heat loss to air Heat transfer to surroundings Loosing latent heat Loosing sensible heat Vaporisation due to heat loss to air Heat transfer to surroundings Loosing latent heat Loosing sensible heat ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the Temperature gradient produced due to density difference None of these Buoyancy of the bubbles produced at active nucleation site Existence of thermal boundary layer Temperature gradient produced due to density difference None of these Buoyancy of the bubbles produced at active nucleation site Existence of thermal boundary layer ANSWER DOWNLOAD EXAMIANS APP
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