Fluid Mechanics & Hydraulics (3140611) MCQs

MCQs of Flow Measuring Devices

Showing 11 to 20 out of 26 Questions
1 2 3
11.
The flow of water in a pipe of about 3 meters in diameter can be measured by
(a) pitot tube
(b) orifice meter
(c) venturimeter
(d) rotameter
Answer:

Option (a)

12.
Rotameter is a device used to measure
(a) absolute pressure
(b) velocity of fluid
(c) flow
(d) rotation
Answer:

Option (c)

13.
A Piezometer tube is used only for measuring
(a) Low pressure
(b) High pressure
(c) Moderate pressure
(d) Vacuum pressure
Answer:

Option (c)

14.
The coefficient of discharge, velocity, and contraction are related as
(a) Cd = Cc + Cv
(b) Cd = Cc X Cv
(c) Cd = Cc - Cv
(d) Cd = Cc / Cv
Answer:

Option (b)

15.
The ratio of actual discharge to theoretical discharge through an orifice is
(a) Cd/Cv
(b) Cv/Cd
(c) Cc Cv 
(d) Cv Cd
Answer:

Option (c)

16.
The average value of the coefficient of velocity is of the order of
(a) 0.56
(b) 0.68
(c) 0.89
(d) 0.97
Answer:

Option (d)

17.
The value of the coefficient of discharge in comparison to the coefficient of velocity is
(a) more
(b) less
(c) same
(d) unpredictable
Answer:

Option (b)

18.
The fluid jet discharging from a 100mm diameter orifice has a diameter of 80mm at its vena-contracta. The coefficient of contraction is '
(a) 0.8
(b) 1.25
(c) 0.2
(d) 0.64
Answer:

Option (d)

19.
A notch is used to measure
(a) Pressure
(b) Discharge
(c) Velocity
(d) Volume
Answer:

Option (b)

20.
The discharge over a triangular notch is
(a) inversely proportional to H3/2
(b) directly proportional to H3/2
(c) inversely proportional to H5/2
(d) directly proportional to H5/2
Answer:

Option (d)

Showing 11 to 20 out of 26 Questions
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