Heat and Mass Transfer The ratio of the energy absorbed by the body to total energy falling on it is called Emissivity Emissive power Absorptivity Absorptive power Emissivity Emissive power Absorptivity Absorptive power ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The emissive power of a body depends upon its Physical nature Temperature All of these Wave length Physical nature Temperature All of these Wave length ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The automobile radiator is a heat exchanger of Regenerator type Counter flow type Cross flow type Parallel flow type Regenerator type Counter flow type Cross flow type Parallel flow type ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of the thickness of thermal boundary layer to the thickness of hydrodynamic boundary layer is equal to (Prandtl number) n, where n is equal to 1 =-1/3 =-2/3 -1 1 =-1/3 =-2/3 -1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat is transferred by all three modes of transfer, viz. conduction, convection and radiation in Refrigerator condenser coils Boiler Electric heater Steam condenser Refrigerator condenser coils Boiler Electric heater Steam condenser ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Two balls of same material and finish have their diameters in the ratio of 2: 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of 0.16736111111111 0.043055555555556 0.084027777777778 0.042361111111111 0.16736111111111 0.043055555555556 0.084027777777778 0.042361111111111 ANSWER DOWNLOAD EXAMIANS APP
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