Heat Transfer Thermal conductivity of a gas at low density, __________ with increase in temperature. Remains unchanged Increases May increase or decrease; depends on the gas Decreases Remains unchanged Increases May increase or decrease; depends on the gas Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Harmonic mean temperature difference is given by 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) √(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) √(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiator of an automobile engine is a __________ type of heat exchanger. Direct contact Cross-current Counter-current Co-current Direct contact Cross-current Counter-current Co-current ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam economy in case of a triple effect evaporator will be > 1 Between 0 and 1 < 1 1 > 1 Between 0 and 1 < 1 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal radiation emitted by a body is proportional to Tn, where T is its absolute temperature. The value of 'n' is exactly 4 for All bodies Polished bodies only Black painted bodies only A black body All bodies Polished bodies only Black painted bodies only A black body ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number. Grashoff Stantan Condensation Brinkman Grashoff Stantan Condensation Brinkman ANSWER DOWNLOAD EXAMIANS APP
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