Heat Transfer A sphere of radius 'R₁' is enclosed in a sphere of radius 'R₂'. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is 1 (R₁/R₂)2 R₂/(R₁+R₂) 1 (R₁/R₂)2 R₂/(R₁+R₂) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For hot feed, forward feeding as compared to backward feeding results in __________ economy. None of these Decreased No effect on Increased None of these Decreased No effect on Increased ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the highest thermal conductivity ? Water Air Silver Black Water Air Silver Black ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fouling factor for a heat exchanger is given by (where, U₁ = heat transfer co-efficient of dirty surface U₂ = heat transfer co-efficient of clean surface) U₂ - U₁ 1/U₁ - 1/U₂ U₁ - U₂ 1/U₂ - 1/U₁ U₂ - U₁ 1/U₁ - 1/U₂ U₁ - U₂ 1/U₂ - 1/U₁ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that Boundary surfaces are isothermal There is no internal heat generation Constant temperature gradient exists Material is anisotropic Boundary surfaces are isothermal There is no internal heat generation Constant temperature gradient exists Material is anisotropic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling point elevation of a solution of NaOH Is almost independent of temperature Is almost independent of pressure Increases rapidly with temperature rise Both B and C Is almost independent of temperature Is almost independent of pressure Increases rapidly with temperature rise Both B and C ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS