Prandtl and Reynolds analogy are same, when Prandtl number is____________________?

Related Mcqs:

1. Prandtl and Reynold’s analogies are identical for Prandtl number value of__________________?

   A. 0
   B. 0.5
   C. 1
   D. 5

2. 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

3. Colburn analogy is applicable for the value of Prandtl number from_________________?

   A. 0.001 to 1
   B. 0.6 to 120
   C. 0.5 to 5
   D. 120 to 400

4. According to Reynolds analogy, Stanton number is equal to (where, f = Fanning friction factor) ?

   A. 2f
   B. f
   C. f/2
   D. f/4

5. Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is_______________?

   A. 0.2
   B. 0.4
   C. 0.6
   D. 0.8

6. For _______________ Prandtl number values, the heat conduction will be negligible in the buffer zone?

   A. Extremely low
   B. Low
   C. High
   D. No

7. Nusselt number is a function of Prandtl number and ______________ number of fluid in natural convection heat transfer?

   A. Grashoff
   B. Biot
   C. Stanton
   D. Reynolds

8. Prandtl number is given by__________________?

   A. CP μ/a
   B. hD/k
   C. CP μ/k
   D. μ/h CP

9. Thickness of thermal boundary layer is more compared to that of hydrodynamic boundary layer, when the value of Prandtl number is_________________?

   A. 1
   B. < 1
   C. > 1
   D. > 5

10. 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