A. Non-isothermal condition of
B. Compressible
C. Both A. and B.
D. Neither A. nor B.
Related Mcqs:
- Bernoulli’s equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli’s equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible ?
A. A, C, D
B. B, D, E
C. A, B, E
D. A, D, E - Fanning friction factor is equal to (where, fB = Blasius friction factor) ?
A. fB/4
B. fB/2
C. 4fB
D. 2fB - If Blasius or Darcy friction factor is ‘f1’ then the Fanning friction factor is equal to____________________?
A. f1/4
B. 4f2
C. 2f1
D. f1/2 - Fanning friction factor for laminar flow of fluid in a circular pipe is____________________?
A. Not a function of the roughness of pipe wall
B. Inversely proportional to Reynolds number
C. Both A. & B.
D. Neither A. nor B. - A centrifugal pump is used to pump water through a horizontal distance of 150 m, and then raised to an overhead tank 10 m above. The pipe is smooth with an I.D of 50 mm. What head (m of water) must the pump generate at its exit E. to deliver water at a flow rate of 0.001 m3/s? The Fanning friction factor, f is 0.0062 ?
A. 10 m
B. 11 m
C. 11.8 m
D. 30 m - If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). ?
A. Q = Q1 + Q2 + Q3
B. V1 = V2 = V3
C. Q1 = Q2 = Q3
D. f = f1 + f2 + f3 - Colebrook equation for friction factor in turbulent flow is given by, f-0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to __________________?
A. 0
B. 1
C. ∞
D. 0.5 - What is the value of Fanning friction factor f ‘ for smooth pipe at NRe = 106 approximately ?
A. 0.003
B. 0.01
C. 0.1
D. 0.3 - The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/√f)-0.4, is called the _____________ equation?
A. Nikuradse
B. Von-Karman
C. Blasius
D. Colebrook - Fanning equation is given by (ΔP/ρ) = 4f (L/D) (v2/2gc). It is applicable to _____________ region flow?
A. Transition
B. Laminar
C. Turbulent
D. Both B. and C.
