Bernoulli’s equation for steady, frictionless, continuous flow states that the ______________ at all sections is same?

Related Mcqs:

1. 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

2. For steady ideal fluid flow, the Bernoulli’s equation states that the_________________?

   A. Velocity is constant along a stream line
   B. Energy is constant throughout the fluid
   C. Energy is constant along a stream line, but may vary across stream lines
   D. None of these

3. The contraction co-efficient for Borda’s mouthpiece (for frictionless fluid) is__________________?

   A. 0.1
   B. 0.5
   C. 0.94
   D. 1

4. Steady non-uniform flow is exemplified by flow through a/an___________________?

   A. Long pipe at constant rate
   B. Long pipe at decreasing rate
   C. Expanding tube at increasing rate
   D. Expanding tube at constant rate

5. Steady uniform flow is represented by flow through a/an ___________________?

   A. Long pipe at constant rate
   B. Long pipe at decreasing rate
   C. Expanding tube at constant rate
   D. None of these

6. Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.

   A. ∂/∂s = 0
   B. ∂/∂t = 0
   C. ∂/∂s = constant
   D. ∂/∂t = constant

7. In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow ?

   A. Discharge of water by a centrifugal pump being run at a constant rpm
   B. Water flow in the suction and discharge pipe of a reciprocating pump
   C. Water discharge from a vertical vessel in which constant level is maintained
   D. Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe

8. 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

9. The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for ______________ fluid?

   A. Newtonian
   B. Dilatant
   C. Pseudo-plastic

   D. Non-Newtonian

10. The energy loss over a length of pipeline according to Darcy-Weisbach equation for pipe flow is _______________ the mean velocity of flow?

    A. Directly proportional to
    B. Directly proportional to square of
    C. Inversely proportional to
    D. Inversely proportional to square of