Heat Transfer The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) h0/K 2K/h0 K/h0 h0/2K h0/K 2K/h0 K/h0 h0/2K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reynold's analogy states that NNu α f Nst α f NRe α f Nst α NRe NNu α f Nst α f NRe α f Nst α NRe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which has the lowest Prandtl number? Lube oil Water Aqueous solution Liquid metal Lube oil Water Aqueous solution Liquid metal ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient goes through a minimum goes through a maximum. continues to decrease continues to increase goes through a minimum goes through a maximum. continues to decrease continues to increase ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Forced circulation evaporators are normally used for concentrating liquids having High viscosity Both A & B Neither A nor B Scaling characteristics High viscosity Both A & B Neither A nor B Scaling characteristics ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is directly concerned with the heat transfer? Grashoff number Sherwood number Strouhal number Euler number Grashoff number Sherwood number Strouhal number Euler number ANSWER DOWNLOAD EXAMIANS APP
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