- (A) Temperature gradient of the wall to that across the entire pipe
- (B) Temperature difference to the temperature gradient at the wall
- (C) Heat flux at the wall to that across the entire pipe
- (D) None of these
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- (A) Thermal diffusivity/Momentum diffusivity
- (B) Thermal diffusivity × Momentum
- (C) Thermal diffusivity × Mass diffusivity
- (D) Mass diffusivity × Momentum diffusivity
- (A) 1
- (B) > 1
- (C) < 1
- (D) Between 1 & 2
- (A) Decreases
- (B) Increases
- (C) Remains unchanged
- (D) May increase or decrease; depends on the gas
- (A) Δt1/2
- (B) Δt2
- (C) Δt5/4
- (D) Δt
- (A) Momentum diffusivity to mass diffusivity
- (B) Momentum diffusivity to thermal diffusivity
- (C) Thermal diffusivity to mass diffusivity
- (D) Thermal diffusivity to momentum diffusivity
- (A) CP μ/a
- (B) hD/k
- (C) CP μ/k
- (D) μ/h CP
- (A) Steam
- (B) Condensate
- (C) Non-condensable
- (D) None of these
- (A) Stefan’s
- (B) Dalton’s
- (C) Wien’s
- (D) Kirchoff’s
- (A) 6
- (B) 12
- (C) 18
- (D) 24
