Heat Transfer One kilogram of water at 0°C is changed to superheated steam of one atm pressure and 300° C. The major heat consumption in the process will be to Data insufficient, can Evaporate the water To superheat the steam Heat the water from 0°C to 100°C Data insufficient, can Evaporate the water To superheat the steam Heat the water from 0°C to 100°C 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 Which of the following has the lowest Prandtl number? Dilute H₂SO₄ Transformer oil Water Molten sodium (a coolant used in fast breeder reactor) Dilute H₂SO₄ Transformer oil Water Molten sodium (a coolant used in fast breeder reactor) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then hf could be greater or smaller than hd hf = hd hf > hd hf < hd hf could be greater or smaller than hd hf = hd hf > hd hf < hd 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 Surrounding temperature Average temperature of the fin Temperature of the fin end Constant temperature equal to that of the base Surrounding temperature Average temperature of the fin Temperature of the fin end Constant temperature equal to that of the base ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer co-efficient in film type condensation is __________ that for dropwise condensation. Half Lower than Greater than Is same as Half Lower than Greater than Is same as ANSWER DOWNLOAD EXAMIANS APP
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