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

Related Mcqs:

1. Assertion A.: The minimum self cleansing velocity in the sewer, at least once a day, must be generated. Reason (R): If certain deposition takes place and is not removed, it obstructs free flow and causes further deposition leading to complete blocking of the sewer?

   A. Both A and R are true and R is the correct explanation of A
   B. Both A and R are true but R is not a correct explanation of A
   C. A is true but R is false
   D. A is false but R is true

2. Flow occurring in a pipeline when a valve is being opened is ______________________?

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

3. A nuisance is experienced in diluting water if dilution factor is less than_________________?

   A. 100
   B. 60
   C. 40
   D. 20

4. 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

5. 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

6. 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

7. 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.

8. Normal depth in open channel flow is the depth of flow corresponding to_______________?

   A. steady flow
   B. unsteady flow
   C. laminar flow
   D. uniform flow
   E. critical flow

9. 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

10. 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