Measurement MCQs with Answers.pdf

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Flow Measurement Question &
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This article lists 100 Flow Measurement MCQs for engineering students.
All the Flow Measurement Questions & Answers given below include a
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hint and a link wherever possible to the relevant topic. This is helpful for
users who are preparing for their exams, interviews, or professionals who
would like to brush up on the fundamentals of Flow Measurement.
The quantity meters, positive displacement meters, rate meters, and
special methods are the categorization of flow measurements. Flow
measurements are important in different applications such as for drinking
purposes, construction purposes, agricultural, industrial, and laboratory
purposes, storing water for proper utilization, and knowing the volume of
liquid and rate of flow, so on.
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Flow meter classification is based on flow rate and weight/quantity or
volume. The quantity meters measures volume in liters example positive
displacement meter etc.
The orifice plate, turbine meter, and electromagnetic flowmeter are
examples of the rate of the flow meter. The mag flux, tidal flux, mag flux,
etc are the types of flux meters.
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There are two methods are there for flow measurement they are; direct
and indirect methods. In direct method flow measurement, the
measurement is obtained directly without the use of any other property
and in indirect method flow measurement, the measurement is obtained
indirectly with the use of more than other property.
1). What is the standard form of LDA?
Laser Doppler Anemometer
Laser Differential Anemometer
Laser Directional Anemometer
None of the above
2). Which one of the following is used for measuring mean and fluctuating
velocities?
Hint
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Laser doppler anemometer
Hot wire anemometer
Both a and b
None of the above
3). What are the advantages of ultrasonic flow meter?
Suitable for liquids
Suitable for gases
Both a and b
None of the above
4). What are the limitations of pitot tube?
Useful in measuring flow velocities
Not suitable for measuring highly fluctuating velocities
Both a and b
None of the above
5). The linear resistance element flow meters principle is based on
__________________ equation?
Hint
Hint
Hint
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Hagen Poiseuille
Faraday's Law
Hall effect
None of the above
6). The secondary meters are categorized into _______________ types?
One
Two
Three
Four
7). What is the necessity of flow measurement?
Drinking purpose
Construction purpose
Laboratory purpose
All of the above
8). The flow meters are classified based on ________________?
Rate of flow
Weight
Hint
Hint
Hint
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Volume
All of the above
9). The figure shown below is a ___________________ anemometer?
Cup anemometer
Vane anemometer
Thermal anemometer
Hint

Read more about Anemometer
10). The flow measurements are categorized into _________________ types?
One
Two
Three
Four
11). Which one of the following is an example for quantity meters?
Nutating discs
Turbine meters
Electromagnetic flow meter
Orifice meters
12). The anemometers are categorized into _____ types?
One
Two
Three
Four
Hint
Hint
Hint

13). Which one of the following meters is a type of mechanical flow meter?
Hot wire
Cup type
Turbine
None of the above
14). The orifice plate categorized into _____ meters?
One
Two
Three
Four
15). Which one of the following is an example for low loss meters?
Dall tubes
V-cones
Both a and b
None of the above
Hint
Hint
Hint
Hint

16). The venture flow meter follows _____ theorem?
Hagen Poiseuille
Faraday's Law
Hall effect
Bernoulli's
17). The venturi meter consists of ___________ sections?
Converging conical
Diverging
Cylindrical throat
All of the above
18). Who is an inventor of pitot tube flow meter?
Henry pitot
John Ambrose Fleming
Thomas Alva Edison
None of the above
19). The figure shown below is a ___________________ type of flow meter?
Hint
Hint
Hint

Rotary vane
Electromagnetic
Lobe type
Target flow meter
20). Which one of the following is a type of flow encountered?
Quantity meters
Wet or dry
Positive displacement meters
None of the above
21). The pitot tubes are used to measure air flow in _______?
Stacks
Ducts
Hint
Hint

Pipes
All of the above
22). Which one of the following is also called a variable area meter?
Venturi meter
Anemometer
Rotameter
All of the above
23). What are the advantages of rotameter?
Has high accuracy
Low cost
Requires no external power or fuel
All of the above
24). How many parts does turbine flow meter consists?
One
Two
Three
Four
Hint
Hint
Hint

25). What are the disadvantages of electromagnetic flow meter?
Ruggedness
Fast response
Not suitable for conductive fluids
All of the above
Flow Measurement MCQs for Quiz
26). The ultrasonic flow meter works on ___________________ principle?
Doppler effect ultrasonic flow meter
Transit time/time of flight ultrasonic flow meter
Both a and b
None of the above
27). Which one of the following comes under constant head variable area meter?
Weirs
Cylinder
Flumes
All of the above
Hint
Hint
Hint

28). Which of the following are the variable head and variable area meters?
Weirs
Flumes
Vane
Both a and b
Venturi
Electromagnetic
Lobe type
Target flow meter
30). In how many ways the velocity measurements can be done?
Hint
Hint
Hint

One
Two
Three
Four
31). Which one of the following meter measures volumes in litres?
Rate of flow meters
Quantity meters
Both a and b
None of the above
32). The tank, rotating impellers are type of __________ meters?
Volumetric meters
Rate meters
Both a and b
None of the above
33). The weighers and traps are type of __________ meters?
Volumetric
Weight
Hint
Hint
Hint

Rate meters
All of the above
34). The turn down ratio of variable area/rotameter flow measurement technology
is _______?
5:1
10:1
100:1
50:1
35). Which one of the following is also a V notch flow meter?
TTDU
Anemometer
Triangular weir
None of the above
36). Which one of the following measures the flow in open channels?
Weirs
Orifice meter
Flow nozzle meter
All of the above
Hint
Hint
Hint

37). Which one of the following measures the differential pressure?
Weirs
Orifice meter
Flow nozzle meter
Both b and c
38). Which one of the following is a type of variable force meter?
Weirs
Flumes
Vane
Both a and b
Hint
Hint
Hint

Venturi
Electromagnetic
Doppler ultrasonic
Target flow meter
40). Which one of the following is an optical type of velocity meter?
Hot wire anemometer
Both a and b
None of the above
Read more about Hot Wire Anemometer
Hint
Hint

41). Which materials are used to construct orifice plate?
Stain less steel
Mild steel
Phosphor bronze
All of the above
42). What are the advantages of venturi meter?
Good reliability
Simple in operation
Low pressure loss
All of the above
43). The pitot tubes are used to measure velocity of liquid flow in __________?
Stacks
Ducts
Pipes
Pipes and open channels
44). What are the advantages of ultrasonic flow meter?
Obstructs less flow
Hint
Hint
Hint

Low flow cut off
Relatively low power consumption
All of the above
45). What is the standard form of TMF?
Technical Mass Flow Meter
Temperature Mass Flow Meter
Thermal Mass Flow Meter
None of the above
46). The gear flow measurement technology accuracy is ___________________ of
reading?
0.1 to 0.5%
0.25 to 1%
0.5 to 1%
0.05 to 0.15%
47). The weirs are categorized into ________ types based on the shape of the
crest?
One
Two
Hint
Hint
Hint

Three
Four
48). The laser doppler anemometer is used for _______ applications?
Research
Industrial
Wind tunnels
All of the above
Venturi
Turbine
Doppler ultrasonic
Hint
Hint

Target flow meter
50). What is the standard form of LDV?
Laser Doppler Velocimetry
Laser Differential Velocimetry
Laser Directional Velocimetry
None of the above
Flow Measurement MCQs for Exams
51). What are the advantages of Coriolis mass flow meters?
Operates in forward flow direction
Operates in reverse flow direction
Outlet and inlet sections are not required
All of the above
52). Which one of the following flow meters has high discharge coefficient?
Nozzle
Orifice
Both a and b
Hint
Hint
Hint

None of the above
53). Which one of the following flow measurements doesn't have long working
life?
Nozzle
Orifice
Both a and b
None of the above
54). Which one of the flow meters suitable for clean fluid?
Transit time ultrasonic
Doppler ultrasonic
Both a and b
None of the above
55). How many thermistors are commonly used in flow probe?
One
Two
Three
Four
Hint
Hint
Hint

56). The flow measurements classified into__________ devices?
One
Two
Three
Four
57). The coefficient of discharge is about 0.61 in ________ meter?
Orifice
Venturi
Both a and b
None of the above
58). The Coriolis mass flow meters accuracy is _______ of reading?
0.1 to 0.5%
0.25 to 1%
0.5 to 1%
0.05 to 0.15%
Hint
Hint
Hint
Hint

Venturi
Turbine
Doppler ultrasonic
Lobe type
60). What are the advantages of vortex shedding flow meter?
No moving parts
Causes very low-pressure loss
Both a and b
None of the above
61). What are the disadvantages of venturi meter?
Venture tube has high cost
Large in size
Both a and b
Hint
Hint

None of the above
62). The turbine flow measurement technology accuracy is______ of reading?
0.1 to 0.5%
0.25 to 1%
0.5 to 1%
0.05 to 0.15%
63). Which one of the following flow measurements is a non-obstructive device?
Rotameter
Turbines
Ultrasonic
All of the above
64). The turn down ratio of coriolis flow measurement technology is _____?
5:1
10:1
100:1
50:1
Hint
Hint
Hint
Hint

65). Which one of the following flow measurements has long working life?
Nozzle
Orifice
Both a and b
None of the above
66). What is the standard form of NTC?
Negative Temperature Coefficient
Negative Thermal Coefficient
Negative Thermistor Coefficient
None of the above
67). Which one of the following flow meters is relatively complex in construction?
Venturi
Orifice
Both a and b
None of the above
68). The typical accuracy of differential pressure flow meter is _______?
0.6 to 2% full scale
Hint
Hint
Hint

0.2 to 1% of reading
0.1 to 0.5% of reading
None of the above
Venturi
Electromagnetic
Doppler ultrasonic
Lobe type
Hint
Hint

70). What are the advantages of pitot tube?
Easy installation
Simple
Low-cost device
All of the above
71). Which one of the following meters is a type of secondary meter?
Flow rate meter
Velocity meter
Both a and b
None of the above
72). Which one of the following is an example for rate of flow meters?
Nutating discs
Turbine meters
Positive displacement
Reciprocating piston
73). What are the disadvantages of orifice plate?
Poor accuracy
Hint
Hint
Hint

High pressure loss
Both a and b
None of the above
74). Which one of the following comes under constant area variable head meter?
Rotameter
Cylinder
Venturi meter
All of the above
75). The magnetic flow measurement technology accuracy is ____ of reading?
0.1 to 0.5%
0.25 to 1%
0.5 to 1%
0.05 to 0.15%
Flow Measurement MCQs for Interviews
76). The Coriolis mass flow meters affected by ________?
Viscosity
Hint
Hint
Hint

Temperature
Pressure
Gas inclusions
77). In which one of the following flows meters, the outlet and inlet sections are
required?
Coriolis
Thermal
Both a and b
None of the above
78). The turn down ratio of turbine flow measurement technology is _________?
5:1
10:1
100:1
50:1
79). The oval gear and oscillating piston flow meters operates in __________ flow
direction?
Forward
Reverse
Hint
Hint
Hint

Both a and b
None of the above
80). Which one of the following sections is not required in lobed impeller flow
meter?
Outlet
Inlet
Both a and b
None of the above
Venturi
Electromagnetic blood
Hint
Hint

Doppler ultrasonic
Lobe type
82). Which one of the following flow meters has low discharge coefficient?
Nozzle
Orifice
Both a and b
None of the above
83). Which one of the flow meters suitable for opaque fluid?
Transit time ultrasonic
Doppler ultrasonic
Both a and b
None of the above
84). What is the standard form of PTC?
Positive Temperature Coefficient
Positive Thermal Coefficient
Positive Thermistor Coefficient
None of the above
Hint
Hint
Hint

85). The full-scale variable area/rotameter flow measurement technology
accuracy is ________ of reading?
0.1 to 0.5%
0.25 to 1%
2 to 4%
1 to 5%
86). In which one of the following flows meters, the pressure recovery is poor?
Venturi
Orifice
Both a and b
None of the above
87). The sound wave time of flight is an operating principle of __________ flow
measurement technology?
Vortex
Magnetic
Ultrasonic
None of the above
Hint
Hint
Hint

88). The electromagnetic induction is an operating principle of_______ flow
Vortex
Magnetic
Ultrasonic
None of the above
89). The coefficient of discharge is about 0.98 in _______ meter?
Venturi
Orifice
Both a and b
None of the above
90). The fluid inertia, Coriolis effect are an operating principle of _________ flow
Venturi
Orifice
Coriolis
None of the above
Hint
Hint
Hint

91). The movement of fixed volumes is an operating principle of ________ flow
Positive displacement
Orifice
Coriolis
None of the above
92). The figure shown below is a block diagram of ___________________ flow
meter?
Venturi
Electromagnetic blood
Hint
Hint

Doppler ultrasonic
Thermal
93). The turn down ratio of gear flow measurement technology is _________?
5:1
10:1
100:1
50:1
94). Which one of the following is required in vortex flow meters?
Minimum Reynolds number
Outlet and inlet sections
Both a and b
None of the above
95). The ultrasonic flow measurement technology accuracy is ______ of reading?
0.1 to 0.5%
0.25 to 1%
0.5 to 1%
0.05 to 0.15%
Hint
Hint
Hint

96). Which one of the following meters is a type of inferential type meter?
Notating disc
Screw type
Anemometer
All of the above
96). The weirs are categorized into ___________________ types based on the shape
of the opening?
One
Two
Three
Four
97). The differential pressure flow meter measures the ____?
Gas
Liquid
Both a and b
None of the above
Hint
Hint
Hint
Hint

98). What is the standard form of TTDU?
Transit Temperature Difference Ultrasonic
Transit Temporary Difference Ultrasonic
Transit Time Difference Ultrasonic
None of the above
99). Which one of the following is an example for cone meters?
Dall tubes
V-cones
Both a and b
None of the above
100). What are the advantages of orifice plate?
Easy to install
Low cost
High reliability
All of the above
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