Hydrometer is used to determine____________________?

Related Mcqs:

1. A fluid in equilibrium can’t sustain____________________?

   A. tensile stress
   B. compressive stress
   C. shear stress
   D. bending stress
   E. all of the above

2. 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

3. Which of the following instrument can be used for measuring speed of an aeroplane___________________?

   A. Venturimeter
   B. Orifice plate
   C. hot wire anemometer
   D. rotameter
   E. pitot tube

4. 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

5. The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as________________?

   A. one dimensional flow
   B. uniform flow
   C. steady flow
   D. turbulent flow
   E. streamline flow

6. Mach number is significant in_____________________?

   A. supersonics, as with projectiles and jet propulsion
   B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
   C. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls
   D. all of fhe above
   E. none of the above

7. In the case of steady flow of a fluid, the acceleration of any fluid particle is________________?

   A. constant
   B. variable
   C. zero
   D. zero under limiting conditions
   E. never zero

8. The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called_______________?

   A. upthrust
   B. reaction
   C. buoyancy
   D. metacentre
   E. center of pressure

9. The vapour pressure over the concave surface is______________________?

   A. less man the vapour pressure over the plane surface
   B. equal to the vapour pressure over the plane surface
   C. greater than the vapour pressure over the plane surface
   D. zero
   E. none of the above

10. The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to_________________?

    A. 1000
    B. 2100
    C. 2700
    D. 10,000
    E. 21,000