Dimensions of surface tension are___________________?

Related Mcqs:

1. A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at water 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

2. Units of surface tension are____________________?

   A. energy/unit area
   B. distance
   C. both of the above
   D. it has no units
   E. none of the above

3. The conditions for the stable equilibrium of a floating body are___________________?

   A. the meta-center should lie above the center of gravity
   B. the center of buoyancy and the center of gravity must lie on the same vertical line
   C. a righting couple should be formed
   D. all the above are correct
   E. none of the above is correct

4. 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

5. 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

6. 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

7. 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

8. The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as________________?

   A. hysteresis
   B. creep
   C. visco elasticity
   D. Boeschinger effect
   E. inelasticity

9. The rise or depression of liquid in a tube due to surface tensionwim increase in size of tube will________________?

   A. increase
   B. remain unaffected
   C. may increase or decrease depending on the characteristics of liquid
   D. decrease
   E. unpredictable

10. 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