Heat Transfer In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred By heating an intermediate material (like chequor bricks) and then heating the air from this hot material By direct contact of hot flue gas with air None of these Through a metallic wall By heating an intermediate material (like chequor bricks) and then heating the air from this hot material By direct contact of hot flue gas with air None of these Through a metallic wall ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A dephlegmator is a Vacuum evaporator Double pipe heat exchanger Partial condenser Total condenser Vacuum evaporator Double pipe heat exchanger Partial condenser Total condenser ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For what value of Prandtl number, the Col-burn analogy is valid ? l to 50 0.6 to 120 1 to 103 0.06 to 120 l to 50 0.6 to 120 1 to 103 0.06 to 120 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Correction is applied to LMTD for __________ flow. Cross Parallel None of these Counter Cross Parallel None of these Counter ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivities of most of the liquids __________ with rise in temperature. Increases May increase or decrease; depends on the liquid Remains unchanged Decreases Increases May increase or decrease; depends on the liquid Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
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
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