A. Nu = 0.023 Re0.8. Pr0.4
B. Nu = (π/2) Gz
C. Nu = (2/π) Gz
D. Nu = 2Gz0.5
A. Heat flux
B. Nusselt number
C. Prandtl number
D. Schmidt number
A. Increasing temperature of the vapour
B. Decreasing temperature of the vapour
C. Increasing viscosity of the film of condensate
D. Increasing temperature drop
A. Increases
B. Decreases
C. Remain same
D. First increases upto a certain temperature and then becomes constant
A. Once
B. Twice
C. Thrice
D. Four times
A. Concentration
B. Viscosity
C. Super-saturation
D. Density
A. Current
B. Voltage
C. Resistance
D. None of these
A. x/KA
B. KA/x
C. K/Ax
D. A/Kx
A. Multipass heat exchanger
B. Baffled heat exchanger
C. Condensation of mixed vapour in a condenser
D. All A. B. and C.
A. Vacuum
B. High pressure
C. High residence time
D. None of these