Heat Transfer With increase in temperature, the thermal conductivity of steel Remains unchanged Increases Decreases Increases exponentially Remains unchanged Increases Decreases Increases exponentially ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reynold's analogy states that Nst α NRe NNu α f Nst α f NRe α f Nst α NRe NNu α f Nst α f NRe α f ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Calburn analogy is applicable for the value of Prandtl number from 0.001 to 1 0.5 to 5 0.6 to 120 120 to 400 0.001 to 1 0.5 to 5 0.6 to 120 120 to 400 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Economy of an evaporator is influenced by the Number of effect Both B & C Feed temperature Steam pressure Number of effect Both B & C Feed temperature Steam pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In an extended surface heat exchanger, fluid having lower co-efficient Flows outside the tubes Can flow either inside or outside the tubes Should not be used as it gives very high pressure drop Flows through the tube Flows outside the tubes Can flow either inside or outside the tubes Should not be used as it gives very high pressure drop Flows through the tube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)R and the co-efficient of performance as a heat pump (COP)HP are (COP)R = (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 (COP)R = 1.5; (COP)HP = 2.5 (COP)R = 2.5; (COP)HP = 1.5 (COP)R = (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 (COP)R = 1.5; (COP)HP = 2.5 (COP)R = 2.5; (COP)HP = 1.5 ANSWER DOWNLOAD EXAMIANS APP
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