In a free vortex motion, the radial component of velocity everywhere is________________?

Related Mcqs:

1. In a forced vortex, the velocity of flow everywhere within the fluid is__________________?

   A. maximum
   B. minimum
   C. zero
   D. non-zero finite
   E. unpredictable

2. A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?

   A. 1 : 5
   B. 1 : 2.5
   C. 1 :25
   D. 1:V5″
   E. 1 : 53/2

3. The property by virtue of which a liquid opposes relative motion between its different layers is called_________________?

   A. surface tension
   B. co-efficient of viscosity
   C. viscosity
   D. osmosis
   E. cohesion

4. 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

5. The velocity of jet of water travelling out of opening in a tank filled with water is proportional to_________________?

   A. head of water (h)
   B. h2
   C. V/T
   D. h2
   E. h3/1

6. At the center 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

7. A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?

   A. 10 m/sec
   B. 25 m/sec
   C. 2 m/sec
   D. 50 m/sec
   E. 250 m/sec

8. Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be_______________?

   A. 1000 kg
   B. 4000 kg
   C. 2000 kg
   D. 8000 kg
   E. 16000 kg

9. Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_________________?

   A. force of adhesion
   B. force of cohesion
   C. force of friction
   D. force of diffusion
   E. none of die above

10. Free surface of a liquid tends to contract to the smallest possible area due to force of_______________?

    A. surface tension
    B. viscosity
    C. friction
    D. cohesion
    E. adhesion