Heat Transfer In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used To prevent corrosion of the tube bundles In low range of temperature differences In high range of temperature differences Because of its low cost To prevent corrosion of the tube bundles In low range of temperature differences In high range of temperature differences Because of its low cost ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is correct ? Driving force = Rate x Resistance Rate = Driving force x Resistance Rate = Resistance/Driving force Resistance = Driving force x Rate Driving force = Rate x Resistance Rate = Driving force x Resistance Rate = Resistance/Driving force Resistance = Driving force x Rate ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A multiple effect evaporator as compared to a single effect evaporator of the same capacity has Lower heat transfer area Higher steam economy Higher solute concentration in the product Lower steam economy Lower heat transfer area Higher steam economy Higher solute concentration in the product Lower steam economy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the lowest overall heat transfer co-efficient? Water Dowtherm Air Molten sodium Water Dowtherm Air Molten sodium ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoffs law. Wavelength of radiation Temperature of the body Nature of the body None of these Wavelength of radiation Temperature of the body Nature of the body None of these 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 = 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 (COP)R = (COP)HP = 2.5 ANSWER DOWNLOAD EXAMIANS APP
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