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 Convective heat transfer, in which heat is transferred by movement of warmed matter is described by Fick's law None of these Fourier's law Newton's law of cooling Fick's law None of these Fourier's law Newton's law of cooling ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then hf could be greater or smaller than hd hf = hd hf < hd hf > hd hf could be greater or smaller than hd hf = hd hf < hd hf > hd 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 Polished bodies only A black body Black painted bodies only All bodies Polished bodies only A black body Black painted bodies only All bodies ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam trap is used to Condense the steam flowing in the pipeline Stop the supply of steam None of these Remove water resulting from partial condensation of steam Condense the steam flowing in the pipeline Stop the supply of steam None of these Remove water resulting from partial condensation of steam ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a vertical tube evaporator, with increase in the liquor level, the True temperature drop increases Capacity of the evaporator is increased Capacity of the evaporator is decreased Both B and C True temperature drop increases Capacity of the evaporator is increased Capacity of the evaporator is decreased Both B and C ANSWER DOWNLOAD EXAMIANS APP
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