Heat Transfer While the total emissivity of a perfect black body is unity, the same for a real body is 1 0 >1 between 0 and 1 1 0 >1 between 0 and 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The units of resistance to heat transfer is W.m⁻².K⁻¹ W⁻¹m²K J.m⁻¹.K⁻¹ J.m⁻².K⁻¹ W.m⁻².K⁻¹ W⁻¹m²K J.m⁻¹.K⁻¹ J.m⁻².K⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a vertical tube evaporator, with increase in the liquor level, the __________ is increased. Neither A and B Both A and B Velocity of circulation Liquor-film co-efficient Neither A and B Both A and B Velocity of circulation Liquor-film co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 1 BTU/hr.ft.°F is equal to __________ kcal/hr. m.°C. 1 4.88 None of these 1.49 1 4.88 None of these 1.49 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling? Diagonal square pitch None of these Square pitch Triangular pitch Diagonal square pitch None of these Square pitch Triangular pitch ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In the equation Q = UAΔt; Δt is Logarithmic mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference Geometric mean temperature difference Logarithmic mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference Geometric mean temperature difference ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS