In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than_______________?

Related Mcqs:

1. Flow occurring in a pipeline when a valve is being opened is________________?

   A. steady
   B. unsteady
   C. laminar
   D. vortex
   E. rotational

2. The ash content in diesel oil should bot be more than_______________?

   A. 1%
   B. 5%
   C. 0.1%
   D. 0.01%
   E. 0.001%

3. Differential monometer is used to measure___________________?

   A. pressure in pipes, channels etc.
   B. atmospheric pressure
   C. very low pressure
   D. difference of pressure between two points
   E. velocity in pipes

4. An ideal flow of any fluid must fulfill the following____________________?

   A. Newton’s law of motion
   B. Newton’s law of viscosity
   C. Pascal’ law
   D. Continuity equation
   E. Boundary layer theory

5. An ideal flow of any fluid must satisfy __________________?

   A. Pascal law
   B. Newton’s law of viscosity
   C. boundary layer theory
   D. continuity equation
   E. Bernoulli’s theorem

6. When the flow parameters at any given instant remain same at every point, then flow is said to be___________________?

   A. quasi static
   B. steady state
   C. laminar
   D. uniform
   E. static

7. The center of pressure of a surface subjected to fluid pressure is the point_______________?

   A. on the surface at which resultant pres-sure acts
   B. on the surface at which gravitational force acis
   C. at which all hydraulic forces meet
   D. similar to metacentre
   E. where pressure equivalent to hydraulic thrust will act

8. If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be_________________?

   A. 2 meters of water column
   B. 3 meters of water column
   C. 5 meters of water column
   D. 6 meters of water Column
   E. 7 meters of water column

9. The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be __________________?

   A. 2 metres of water column
   B. 3 metres of water column
   C. 3.5 metres of water column
   D. 4 m of water column
   E. none of the above

10. The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if___________________?

    A. the area is horizontal
    B. the area is vertical
    C. the area is inclined
    D. all of the above
    E. none of the above