Heat Transfer In Biot number, the characteristic length used is the ratio of the __________ of the solid. Perimeter to surface area Surface area to volume Volume to surface area Surface area to perimeter Perimeter to surface area Surface area to volume Volume to surface area Surface area to perimeter ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An equipment which converts the latent or sensible heat of one fluid into the latent heat of vaporisation of another, is called a boiler recuperator heat exchanger regenerator boiler recuperator heat exchanger regenerator ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Indirect contact heat exchangers are preferred over direct contact heat exchangers, because There is no mist formation There is no risk of contamination Cost of equipment is lower Heat transfer co-efficient are high There is no mist formation There is no risk of contamination Cost of equipment is lower Heat transfer co-efficient are high ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Sensible heat of hot industrial flue gases can not be recovered by a/an Ceramic recuperator Economiser Regenerator None of these Ceramic recuperator Economiser Regenerator None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Joule's experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms⁻². Neglecting the heat capacity of agitator, the temperature of water (in °C) is 34.4 26.8 40.5 25 34.4 26.8 40.5 25 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer occurs by natural convection because change in temperature causes difference in Viscosity Heat capacity Thermal conductivity Density Viscosity Heat capacity Thermal conductivity Density ANSWER DOWNLOAD EXAMIANS APP
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