A fluid of kinematic viscosity 0.4 cm2/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be__________________?

Related Mcqs:

1. The discharge of a liquid of kinematic viscosity 4 cm2/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is__________________?

   A. laminar flow B. transition flow C. turbulent flow D. not predictable from the given data...

2. If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is________________?

   A. less than 1 B. between 1 and 100 C. 160 D. 200...

3. If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________________?

   A. 0.25 B. 0.50 C. 1.0 D. none of the above...

4. A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be________________?

   A. 1 m B. 10m C. 100m D. none of the above...

5. The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be_________________?

   A. 0.423 D B. 0.577 D C. 0.223 D D. 0.707 D where D is the depth of flow...

6. The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is_______________?

   A. 1/2 B. 2/3 C. 3/2 D. 2...

7. In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is_________________?

   A. 22.5 m/sec B. 33 m/sec C. 40 m/sec D. 90 m/sec...

8. The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is_____________________?

   A. 32 km B. 20 km C. 8 km D. 4 km...

9. For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be_________________?

   A. 300 B. 337.5 C. 600 D. 675...

10. The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is________________?

    A. 0.223 R B. 0.423 R C. 0.577 R D. 0.707 R where R is radius of pipe...