Which of the following flow measuring devices is an area meter ?

Related Mcqs:

1. Out of the following flow measuring devices, which one incurs the maximum installation cost as well as pressure loss ?

   A. Flow nozzle
   B. Venturimeter
   C. Rotameter
   D. Orificemeter

2. 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

3. Bernoulli’s equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli’s equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible ?

   A. A, C, D
   B. B, D, E
   C. A, B, E
   D. A, D, E

4. The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a____________________?

   A. Weir
   B. Pitot tube
   C. Kennison nozzle
   D. V-notch

5. Which of the following may be termed as a variable orifice flow-meter ?

   A. Rotameter
   B. Pitot tube
   C. V-notch
   D. All A., B. and C.

6. The energy loss in flow through Venturimeter is less than that through flow nozzle, because in case of a flow nozzle, the ?

   A. Length is shorter
   B. Throat diameter is more
   C. Sudden expansion of flow in the downstream occurs
   D. Distance between the throat and the inlet is more

7. Applying a pressure drop across a capillary results in a volumetric flow rate ‘Q’ under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is____________________?

   A. Q/2
   B. Q/4
   C. Q/8
   D. Q/16

8. In area meter (e.g., Rotameter), with increase in the fluid flow rate, the___________________?

   A. Pressure drop increases linearly
   B. Pressure drop is almost constant
   C. Area through which fluid flows does not vary
   D. None of these

9. The pressure head of a flow meter remains constant for_________________?

   A. Venturimeter
   B. Orificemeter
   C. Rotameter
   D. Pitot tube

10. Which is the most efficient and best for measuring very small flow rate of gases ?

    A. Venturimeter
    B. Orificemeter
    C. Rotameter
    D. Flow nozzle