A. Thermal diffusivity/Momentum diffusivity
B. Thermal diffusivity × Momentum
C. Thermal diffusivity × Mass diffusivity
D. Mass diffusivity × Momentum diffusivity
Related Mcqs:
- Prandtl and Reynold’s analogies are identical for Prandtl number value of__________________?
A. 0
B. 0.5
C. 1
D. 5 - Prandtl and Reynolds analogy are same, when Prandtl number is____________________?
A. 0.5
B. 1
C. > 2
D. 1.5 - For what value of Prandtl number, St = f/2 ?
A. 1.5
B. 1
C. > 1
D. < 1 - At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe ?
A. 0.5
B. < 0.5
C. > 0.6
D. < 0.1 - Which has the lowest Prandtl number ?
A. Liquid metal
B. Aqueous solution
C. Water
D. Lube oil - The dimensionless group in mass transfer that is equivalent to Prandtl number in heat transfer is_________________?
A. Nusselt number
B. Sherwood number
C. Schmidt number
D. Stanton number - For what value of Prandtl number, the Col-burn analogy is valid ?
A. 0.06 to 120
B. 0.6 to 120
C. 1 to 103
D. 1 to 50 - Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is________________?
A. 0.1
B. > 1
C. < 1
D. 1 - Value of Prandtl number for water ranges from_________________?
A. 1 to 2
B. 5 to 10
C. 100 to 500
D. 1000 to 2000 - Prandtl number is the ratio of________________?
A. Mass diffusivity to thermal diffusivity
B. Momentum diffusivity to thermal diffusivity
C. Thermal diffusivity to mass diffusivity
D. Thermal diffusivity to momentum diffusivity
