Heat Transfer Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be 0.85 0.55 0.45 0.35 0.85 0.55 0.45 0.35 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Conductance is given by(where, x = thickness, A = heat flow area, K = thermal conductivity.) A/Kx K/Ax KA/x X/KA A/Kx K/Ax KA/x X/KA ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multiple effect evaporation accounts for Investment economy None of these Steam economy Lower operating costs Investment economy None of these Steam economy Lower operating costs ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be Equal to 45°C More than 45°C Initially decreases and remains constant thereafter Less than 45°C Equal to 45°C More than 45°C Initially decreases and remains constant thereafter Less than 45°C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In SI units, thermal conductivity is expressed in Watt/m4. °K Watt/m². °K Watt/m.°K Watt/m². °K Watt/m4. °K Watt/m². °K Watt/m.°K Watt/m². °K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Choose the most important factor on which the heat conducted through a wall in a unit time will depend on? Area of the wall perpendicular to heat flow Thickness of the wall Temperature difference between the two surfaces of the wall Material of the wall Area of the wall perpendicular to heat flow Thickness of the wall Temperature difference between the two surfaces of the wall Material of the wall ANSWER DOWNLOAD EXAMIANS APP
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