Related Mcqs:

1. Pressure drag does not depend upon the_________________?

   A. Roughness of surface of the body
   B. Pressure of main flow only
   C. Length of the body in flow direction
   D. All A., B. and C.

2. In which of the following body shapes, the pressure drag is large compared to the friction drag ?

   A. Stream line body
   B. Two dimensional body
   C. Bluff body
   D. None of these

3. The ratio of wall drag to total drag in the Stoke’s law range is_________________?

   A. 0.5
   B. 1
   C. 1/3
   D. 2/3

4. The ratio of the wall drag to the form drag in the Stoke’s law range (for motion of spherical particles in a stationary fluid) is__________________?

   A. 0.5
   B. 1
   C. 2
   D. 0.33

5. Which of the following relationship is valid for the equilibrium position of the float in a Rotameter? (Where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)?

   A. Df + Bf = Wf
   B. Df = Bf + Wf
   C. Df + Bf + Wf =0
   D. None of these

6. Theoretical head developed by a centrifugal pump does not depend upon the _____________ the impeller?

   A. Radius of
   B. Speed of
   C. Fluid velocity leaving
   D. None of these

7. The discharge co-efficient for an orifice meter does not depend upon the ___________________?

   A. Pipe length
   B. Ratio of pipe diameter to orifice diameter
   C. Type of orifice & the Reynolds number
   D. Pipe diameter

8. Location of vena-contracta in an orificemeter does not depend upon the________________?

   A. Type of orifice
   B. Density, viscosity & compressibility of the fluid
   C. Ratio of pipe diameter to orifice diameter
   D. Pipe roughness

9. The buoyant force acting on a floating body is dependent on the _______________?

   A. Viscosity of the liquid
   B. Weight of the liquid displaced
   C. Depth of immersion of the body
   D. Surface tension of the liquid

10. Drag is defined as the force exerted by the___________________?

    A. Fluid on the solid in a direction opposite to flow
    B. Fluid on the solid in the direction of flow
    C. Solid on the fluid
    D. None of these