Rotameter is a device used to measure____________________?

Related Mcqs:

1. The surface tension of mercury at normal temperature compared to that of water is____________________?

   A. more
   B. less
   C. same
   D. more or less depending on size of glass tube
   E. none of the above.

2. The property of fluid by virtue of which it offers resistance to shear is called____________________?

   A. surface tension
   B. adhesion
   C. cohesion
   D. viscosity
   E. all of the above

3. Fluid is a substance that_______________?

   A. cannot be subjected to shear forces
   B. always expands until it fills any container
   C. has the same shear stress.at a point regardless of its motion
   D. cannot remain at rest under action of any shear force
   E. flows

4. The bulk modulus of elasticity with increase in pressure___________________?

   A. increases
   B. decreases
   C. remains constant
   D. increases first upto certain limit and then decreases
   E. unpredictable

5. A liquid would wet the solid, if adhesion forces as compared to cohesion forces are_________________?

   A. less
   B. more
   C. equal
   D. less at low temperature and more at high temperature
   E. there is no such criterion

6. To avoid an interruption in the flow of a syphon, an air vessel is provided______________?

   A. at the inlet
   B. at the outlet
   C. at the summit
   D. ay nay point between inlet and outlet
   E. none of the above

7. Operation of McLeod gauge used for low pressure measurement is based on the principle of_____________________?

   A. gas law
   B. Boyle’s law
   C. Charle’s law
   D. Pascal’s law
   E. McLeod’s law

8. 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

9. Non uniform flow occurs when ____________________?

   A. the direction and magnitude of the velocity at all points are identical
   B. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
   C. the magnitude aricf direction of the velocity do not change from point to point in the fluid
   D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
   E. velocity, depth, pressure, etc. change from point to point in the fluid flow

10. Froude number is significant in____________________?

    A. supersonics, as with projectile 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 forces, and wave making effect, as with ship’s hulls
    D. all of the above
    E. none of the above