Heat Transfer The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns. 5-50 0.38-0.78 0.5-50 100-1000 5-50 0.38-0.78 0.5-50 100-1000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In counter flow compared to parallel flow, Less surface area is required for a given heat transfer rate More surface area is required for a given heat transfer rate Both A and B LMTD is greater Less surface area is required for a given heat transfer rate More surface area is required for a given heat transfer rate Both A and B LMTD is greater ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For small temperature difference, the heat transfer rate as per Newton's law of cooling is proportional to (where, Δt = excess temperature) √Δt Δt² Δt Δt³ √Δt Δt² Δt Δt³ 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 = hd hf < hd hf could be greater or smaller than hd hf > hd hf = hd hf < hd hf could be greater or smaller than hd hf > hd ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl number for most of dry gases is about 70 0.72 150 0.001 70 0.72 150 0.001 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place From one part of a body to the another part of the same body Both B & C Between two bodies in physical contact with each other Between two bodies not in physical contact with each other From one part of a body to the another part of the same body Both B & C Between two bodies in physical contact with each other Between two bodies not in physical contact with each other ANSWER DOWNLOAD EXAMIANS APP
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