Heat Transfer In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always 1 > 1 < 1 ∞ 1 > 1 < 1 ∞ ANSWER DOWNLOAD EXAMIANS APP
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 Evaporate the water To superheat the steam Data insufficient, can Heat the water from 0°C to 100°C Evaporate the water To superheat the steam Data insufficient, can Heat the water from 0°C to 100°C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At constant temperature, the thermal conductivities of gases __________ with rise in pressure. Decrease Remain unchanged Increase May increase or decrease; depends on the pressure Decrease Remain unchanged Increase May increase or decrease; depends on the pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Iron plates Aluminium foil Coal dust Refractory bricks Iron plates Aluminium foil Coal dust Refractory bricks ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately 45 32 50 37 45 32 50 37 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat flux, as defined in heat flow is analogous to __________ in electricity flow. Resistance Voltage Current None of these Resistance Voltage Current None of these ANSWER DOWNLOAD EXAMIANS APP
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