Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as Q ∝ T³ Q ∝ T² None of these Q ∝ T⁴ Q ∝ T³ Q ∝ T² None of these Q ∝ T⁴ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fourier's law applies to the heat transfer by None of the listed here convection conduction radiation None of the listed here convection conduction radiation 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 Thick walled Thin walled having the value of Ao Ai/< 2 Having the value of Ao/Ai > 2 Both B and C Thick walled Thin walled having the value of Ao Ai/< 2 Having the value of Ao/Ai > 2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the geometric mean of two heat transfer areas A₁ and A₂ ? 1/2 √(A₁ . A₂) √(A₁ + A₂) √(A₁ . A₂) 2 √(A₁ . A₂) 1/2 √(A₁ . A₂) √(A₁ + A₂) √(A₁ . A₂) 2 √(A₁ . A₂) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case, Both the spheres will emit equal amount of radiation per unit time in the beginning Both will absorb equal amount of radiation from the surrounding in the beginning Both B & C The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant Both the spheres will emit equal amount of radiation per unit time in the beginning Both will absorb equal amount of radiation from the surrounding in the beginning Both B & C The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is not used as a medium for high temperature heating ? dowtherm liquid metal mercury None of the listed here dowtherm liquid metal mercury None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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