Heat Transfer A diathermaneous substance __________ the thermal radiation completely. Reflects Absorbs Transmits None of these Reflects Absorbs Transmits None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be W/m.k² W/m W/m.k None, A is just a number W/m.k² W/m W/m.k None, A is just a number 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 25 34.4 26.8 40.5 25 34.4 26.8 40.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Solid angle subtended by the finite surface at the radiating element is expressed in terms of radians proportional to the square of the distance between surfaces called the angle of vision called the view factor. expressed in terms of radians proportional to the square of the distance between surfaces called the angle of vision called the view factor. ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the Heating volume Nusselt number None of these Heat transfer area Heating volume Nusselt number None of these Heat transfer area ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately 32 50 45 37 32 50 45 37 ANSWER DOWNLOAD EXAMIANS APP
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