Two pipe systems can be said to be equivalent, when the following quantites are same______________?

Related Mcqs:

1. To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than_______________?

   A. 2.4 m above the hydraulic gradient
   B. 6.4 m above the hydraulic gradient
   C. 10.0 m above the hydraulic gradient
   D. 5.0 above the hydraulic gradient
   E. none of the above

2. A five day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is____________________?

   A. 100
   B. 1000
   C. 5000
   D. 10000

3. If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is___________________?

   A. 1045 mm
   B. 1065 mm
   C. 1075 mm
   D. 1095 mm

4. hydraulically equivalent, the relationship which holds good, is _______________?

   A. D8/3 = 4 b8/3
   B. D3/8 = 4 b3/8
   C. D2/3 = 4 b2/3
   D. D3/2 = 4 b3/2

5. If D is the diameter of a circular sewer and D’ is the top horizontal diameter of an equivalent egg shaped section, the relationship which holds good, is_______________?

   A. D’ = 0.64 D
   B. D’ = 0.74 D
   C. D’ = 0.84 D
   D. D’ = 0.94 D

6. The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is____________________?

   A. 1.095
   B. 1.085
   C. 1.075
   D. 1.065

7. A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is __________________?

   A. 9,000 kg
   B. 13,500 kg
   C. 18,000 kg
   D. 27,000 kg
   E. 30,000 kg

8. Flow of water in a pipe about 3 meters in diameter can be measured by_________________?

   A. orifice plate
   B. venturi
   C. rotameter
   D. pitot tube
   E. nozzle

9. During the opening of a valve in a pipe line, the flow is___________________?

   A. steady
   B. unsteady
   C. uniform
   D. laminar
   E. free vortex type

10. At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_______________?

    A. minimum
    B. maximum
    C. zero
    D. negative value
    E. could be any value