Heat Transfer An insulator should have Low thermal conductivity High thermal conductivity A porous structure Less resistance to heat flow Low thermal conductivity High thermal conductivity A porous structure Less resistance to heat flow 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 40.5 26.8 25 34.4 40.5 26.8 25 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The purpose of floating head in a heat exchanger is to Avoid buckling of tubes Decrease the pressure drop Facilitate its lengthening, if needed Provide support for tubes Avoid buckling of tubes Decrease the pressure drop Facilitate its lengthening, if needed Provide support for tubes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the lowest Prandtl number? Dilute H₂SO₄ Molten sodium (a coolant used in fast breeder reactor) Water Transformer oil Dilute H₂SO₄ Molten sodium (a coolant used in fast breeder reactor) Water Transformer oil ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, the shell side fluid velocity can not be changed by changing the Tube pitch Tube layout Tube diameter No. of baffles Tube pitch Tube layout Tube diameter No. of baffles ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Graetz number is concerned with the absorption with chemical reaction mass transfer between a gas and a liquid heat transfer in turbulent flow heat transfer in laminar flow absorption with chemical reaction mass transfer between a gas and a liquid heat transfer in turbulent flow heat transfer in laminar flow ANSWER DOWNLOAD EXAMIANS APP
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