Related Mcqs:

1. Design of the casing of centrifugal pump should be such as to minimise the________________?

   A. Back flow through impeller
   B. Loss of kinetic head
   C. Loss of static head
   D. None of these

2. An ideal nozzle design aims at________________?

   A. Minimising wall friction
   B. Suppressing boundary layer separation
   C. Both A. & B.
   D. Neither A. nor B.

3. The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop of _____________ fluid?

   A. Dilatent
   B. Pseudo-plastic
   C. Bingham plastic
   D. Newtonian

4. In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow ?

   A. Discharge of water by a centrifugal pump being run at a constant rpm
   B. Water flow in the suction and discharge pipe of a reciprocating pump
   C. Water discharge from a vertical vessel in which constant level is maintained
   D. Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe

5. 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

6. Critical velocity in a pipe flow_________________?

   A. Increases as fluid viscosity increases
   B. Increases as pipe diameter increases
   C. Independent of fluid density
   D. None of these

7. The losses in open channel flow generally vary as the ________________?

   A. Inverse of the roughness
   B. First power of the roughness
   C. Square of the velocity
   D. Inverse square of hydraulic radius

8. An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonian fluid beyond yield stress. Which of the following is an ideal plastic ?

   A. Sewage sludge
   B. Rubber latex
   C. Blood
   D. Sugar solution

9. Hot wire anemometer is used to measure the_________________?

   A. Velocity of liquids
   B. Temperature of liquids
   C. Velocity of gases
   D. Pressure of liquids

10. A mixed flow centrifugal pump_______________________?

    A. Employs such an impeller, through which the flow is a combination of radial & axial flow
    B. Mixes the two fluids before pumping them
    C. Pumps the two fluids separately and then mixes them
    D. Employs impellers in both the radial & axial directions