An ideal fluid is___________________?

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. An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonian fluid beyond yield stress. Which of the following is an ideal plastic ?

   A. Sewage sludge
   B. Rubber latex
   C. Blood
   D. Sugar solution

3. For an ideal fluid flow, Reynolds number is___________________?

   A. 2100
   B. 100
   C. 0
   D. ∞

4. Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?

   A. I, II, III
   B. II, III, V
   C. I, II, V
   D. II, IV, V

5. The pressure drop per unit length of pipe incurred by a fluid ‘X’ flowing through pipe is Δp. If another fluid ‘Y’ having both the specific gravity & density just double of that of fluid ‘X’, flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be__________________?

   A. Δp
   B. 2Δp
   C. Δp2
   D. Δp/2

6. In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant ?

   A. Rotational
   B. Unsteady
   C. Turbulent
   D. Non-uniform

7. 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

8. The Reynolds number for an ideal fluid flow is _________________?

   A. 4
   B. 2100-4000
   C. 4000
   D. ∞

9. The continuity equation in ideal fluid flow states that__________________?

   A. Net rate of inflow into any small volume must be zero
   B. Energy is not constant along a streamline
   C. Energy is constant along a streamline
   D. There exists a velocity potential

10. Mercury is an ideal barometric fluid mainly due to its __________________?

    A. High density
    B. Low compressibility
    C. Low capillary action
    D. Very low vapor pressure