The continuity equation__________________?

Related Mcqs:

1. The continuity equation of fluid mechanics utilises the principle of conservation of _________________?

   A. Momentum
   B. Mass
   C. Energy
   D. Both B. & C.

2. 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

3. For one dimensional flow of an incompressible fluid in unsteady state in x-direction, the continuity equation is given by_______________?

   A. ∂u/∂x = 0
   B. ∂(ρu)/∂x = 0
   C. (∂u/∂x) = – (∂ρ/∂t)
   D. ∂ρ/∂t = 0

4. 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

5. The continuity equation___________________?

   A. Is independent of the compressibility of the fluid
   B. Is dependent upon the viscosity of the fluid
   C. Represents the conservation of mass
   D. None of these

6. 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

7. Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around________________?

   A. 2000
   B. 10
   C. 100
   D. 1000

8. A hydraulic accumulator comprises of__________________?

   A. A storage device and a control valve
   B. A cylinder and a plunger
   C. Two pistons and two cylinders
   D. A storage tank and a ram pump

9. Which of the following equations is valid for laminar flow of a fluid through packed bed ?

   A. Fanning equation
   B. Kozeny – Karman equation
   C. Hagen-Poiseuille equation
   D. Blake-Plummer equation

10. Glass pipes can be joined by__________________?

    A. Flanges
    B. Welding
    C. Soldering
    D. Bell and spigot joint