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) h0/2K h0/K K/h0 2K/h0 h0/2K h0/K K/h0 2K/h0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl and Reynolds analogy are same, when Prandtl number is 1.5 0.5 1 > 2 1.5 0.5 1 > 2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is Both B and C Thin walled having the value of Ao Ai/< 2 Having the value of Ao/Ai > 2 Thick walled Both B and C Thin walled having the value of Ao Ai/< 2 Having the value of Ao/Ai > 2 Thick walled ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer To reduce the tube side pressure drop for the same flow rate, the heat exchanger recomended is 3-2 heat exchanger 1-2 heat exchanger 2-4 heat exchanger 1-1 heat exchanger 3-2 heat exchanger 1-2 heat exchanger 2-4 heat exchanger 1-1 heat exchanger 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
Heat Transfer In a forward feed multiple effect, the pressure build up will be highest at the outlet of the last effect least at the inlet of the first effect least at the outlet of the last effect highest at the inlet of the last effect highest at the outlet of the last effect least at the inlet of the first effect least at the outlet of the last effect highest at the inlet of the last effect ANSWER DOWNLOAD EXAMIANS APP
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