Heat Transfer Thermal diffusivity of a material All of these Is the ratio of thermal conductivity to thermal capacity Has the unit m² /sec Is defined as K/ρ . Cp All of these Is the ratio of thermal conductivity to thermal capacity Has the unit m² /sec Is defined as K/ρ . Cp 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 40.5 34.4 26.8 25 40.5 34.4 26.8 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the Temperature of the fin end Surrounding temperature Average temperature of the fin Constant temperature equal to that of the base Temperature of the fin end Surrounding temperature Average temperature of the fin Constant temperature equal to that of the base ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Baffle spacing Is not the same as baffle pitch None of these Should be less than one fifth the diameter of the shell Should be less than the inside diameter of the shell Is not the same as baffle pitch None of these Should be less than one fifth the diameter of the shell Should be less than the inside diameter of the shell ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam traps are provided in steam carrying pipelines to none of the listed here condense steam remove condensate and inert gases release excess steam pressure by bleeding steam. none of the listed here condense steam remove condensate and inert gases release excess steam pressure by bleeding steam. ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is __________ the outlet temperature of the cold fluid. Less than More than Equal to Either more or less than (depending upon the fluid) Less than More than Equal to Either more or less than (depending upon the fluid) ANSWER DOWNLOAD EXAMIANS APP
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