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 __________________?

Related Mcqs:

1. The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be____________________?

   A. 500 kg
   B. 1000 kg
   C. 1500 kg
   D. 2000 kg
   E. 4000 kg.

2. The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be___________________?

   A. 500 kg
   B. 1000 kg
   C. 1500 kg
   D. 2000 kg
   E. 4000 kg

3. 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

4. The upper surface of a weir over which water flows is known is________________?

   A. crest
   B. nappe
   C. sill
   D. weir top
   E. contracta

5. The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is ______________________?

   A. 2.4 m
   B. 3.0 m
   C. 4.0 m
   D.”2.5 m
   E. 5.0 m

6. For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of___________________?

   A. 100 cm
   B. 120 cm
   C. 140 cm
   D. 160 cm

7. An open vessel of water is accelerated up an inclined plane. The free water surface will___________________?

   A. be horizontal
   B. make an angle in direction of inclination of inclined plane
   C. make an angle in opposite direction to inclination of inclined plane
   D. any one of above is possible
   E. none of the above

8. 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

9. 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

10. Surface energy per unit area of a surface is numerically equal to___________________?

    A. atmospheric pressure
    B. surface tension
    C. force of adhesion
    D. force of cohesion
    E. viscosity