Heat Transfer The main purpose of providing fins on heat transfer surface is to increase the Heat transfer area Heat transfer co-efficient Mechanical strength of the equipment Temperature gradient Heat transfer area Heat transfer co-efficient Mechanical strength of the equipment Temperature gradient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) K/h0 h0/K h0/2K 2K/h0 K/h0 h0/K h0/2K 2K/h0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Presence of a non-condensing gas in a condensing vapour decreases thermal resistance increases the rate of condensation None of the listed here is desirable to increase the film co-efficient decreases thermal resistance increases the rate of condensation None of the listed here is desirable to increase the film co-efficient ANSWER DOWNLOAD EXAMIANS APP
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 Heat transfer rate per unit area is called thermal conductivity heat transfer co-efficient thermal diffusivity heat flux thermal conductivity heat transfer co-efficient thermal diffusivity heat flux ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal radiation emitted by a body is proportional to Tn, where T is its absolute temperature. The value of 'n' is exactly 4 for All bodies Black painted bodies only A black body Polished bodies only All bodies Black painted bodies only A black body Polished bodies only ANSWER DOWNLOAD EXAMIANS APP
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