Flow Measurement Question & Answers August 29, 2022 By WatElectronics This article lists 100 Flow Measurement MCQs for engineering students. All the Flow Measurement Questions & Answers given below include a 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. 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. 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 None Hint 2). Which one of the following is used for measuring mean and fluctuating velocities? Laser doppler anemometer Hot wire anemometer Both a and b None of the above None Hint 3). What are the advantages of ultrasonic flow meter? Suitable for liquids Suitable for gases Both a and b None of the above None Hint 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 None Hint 5). The linear resistance element flow meters principle is based on __________________ equation? Hagen Poiseuille Faraday's Law Hall effect None of the above None Hint 6). The secondary meters are categorized into _______________ types? One Two Three Four None Hint 7). What is the necessity of flow measurement? Drinking purpose Construction purpose Laboratory purpose All of the above None Hint 8). The flow meters are classified based on ________________? Rate of flow Weight Volume All of the above None Hint 9). The figure shown below is a ___________________ anemometer? Cup anemometer Vane anemometer Thermal anemometer Laser doppler anemometer None Hint Read more about Anemometer 10). The flow measurements are categorized into _________________ types? One Two Three Four None Hint 11). Which one of the following is an example for quantity meters? Nutating discs Turbine meters Electromagnetic flow meter Orifice meters None Hint 12). The anemometers are categorized into _____ types? One Two Three Four None Hint 13). Which one of the following meters is a type of mechanical flow meter? Hot wire Cup type Turbine None of the above None Hint 14). The orifice plate categorized into _____ meters? One Two Three Four None Hint 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 None Hint 16). The venture flow meter follows _____ theorem? Hagen Poiseuille Faraday's Law Hall effect Bernoulli's None Hint 17). The venturi meter consists of ___________ sections? Converging conical Diverging Cylindrical throat All of the above None Hint 18). Who is an inventor of pitot tube flow meter? Henry pitot John Ambrose Fleming Thomas Alva Edison None of the above None Hint 19). The figure shown below is a ___________________ type of flow meter? Rotary vane Electromagnetic Lobe type Target flow meter None Hint 20). Which one of the following is a type of flow encountered? Quantity meters Wet or dry Positive displacement meters None of the above None Hint 21). The pitot tubes are used to measure air flow in _______? Stacks Ducts Pipes All of the above None Hint 22). Which one of the following is also called a variable area meter? Venturi meter Anemometer Rotameter All of the above None Hint 23). What are the advantages of rotameter? Has high accuracy Low cost Requires no external power or fuel All of the above None Hint 24). How many parts does turbine flow meter consists? One Two Three Four None Hint 25). What are the disadvantages of electromagnetic flow meter? Ruggedness Fast response Not suitable for conductive fluids All of the above None Hint 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 None Hint 27). Which one of the following comes under constant head variable area meter? Weirs Cylinder Flumes All of the above None Hint 28). Which of the following are the variable head and variable area meters? Weirs Flumes Vane Both a and b None Hint 29). The figure shown below is a ___________________ type of flow meter? Venturi Electromagnetic Lobe type Target flow meter None Hint 30). In how many ways the velocity measurements can be done? One Two Three Four None Hint 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 None Hint 32). The tank, rotating impellers are type of __________ meters? Volumetric meters Rate meters Both a and b None of the above None Hint 33). The weighers and traps are type of __________ meters? Volumetric Weight Rate meters All of the above None Hint 34). The turn down ratio of variable area/rotameter flow measurement technology is _______? 5:1 10:1 100:1 50:1 None Hint 35). Which one of the following is also a V notch flow meter? TTDU Anemometer Triangular weir None of the above None Hint 36). Which one of the following measures the flow in open channels? Weirs Orifice meter Flow nozzle meter All of the above None Hint 37). Which one of the following measures the differential pressure? Weirs Orifice meter Flow nozzle meter Both b and c None Hint 38). Which one of the following is a type of variable force meter? Weirs Flumes Vane Both a and b None Hint 39). The figure shown below is a ___________________ type of flow meter? Venturi Electromagnetic Doppler ultrasonic Target flow meter None Hint 40). Which one of the following is an optical type of velocity meter? Laser doppler anemometer Hot wire anemometer Both a and b None of the above None Hint Read more about Hot Wire Anemometer 41). Which materials are used to construct orifice plate? Stain less steel Mild steel Phosphor bronze All of the above None Hint 42). What are the advantages of venturi meter? Good reliability Simple in operation Low pressure loss All of the above None Hint 43). The pitot tubes are used to measure velocity of liquid flow in __________? Stacks Ducts Pipes Pipes and open channels None Hint 44). What are the advantages of ultrasonic flow meter? Obstructs less flow Low flow cut off Relatively low power consumption All of the above None Hint 45). What is the standard form of TMF? Technical Mass Flow Meter Temperature Mass Flow Meter Thermal Mass Flow Meter None of the above None Hint 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% None Hint 47). The weirs are categorized into ________ types based on the shape of the crest? One Two Three Four None Hint 48). The laser doppler anemometer is used for _______ applications? Research Industrial Wind tunnels All of the above None Hint 49). The figure shown below is a ___________________ type of flow meter? Venturi Turbine Doppler ultrasonic Target flow meter None Hint 50). What is the standard form of LDV? Laser Doppler Velocimetry Laser Differential Velocimetry Laser Directional Velocimetry None of the above None Hint 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 None Hint 52). Which one of the following flow meters has high discharge coefficient? Nozzle Orifice Both a and b None of the above None Hint 53). Which one of the following flow measurements doesn't have long working life? Nozzle Orifice Both a and b None of the above None Hint 54). Which one of the flow meters suitable for clean fluid? Transit time ultrasonic Doppler ultrasonic Both a and b None of the above None Hint 55). How many thermistors are commonly used in flow probe? One Two Three Four None Hint 56). The flow measurements classified into__________ devices? One Two Three Four None Hint 57). The coefficient of discharge is about 0.61 in ________ meter? Orifice Venturi Both a and b None of the above None Hint 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% None Hint 59). The figure shown below is a ___________________ type of flow meter? Venturi Turbine Doppler ultrasonic Lobe type None Hint 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 None Hint 61). What are the disadvantages of venturi meter? Venture tube has high cost Large in size Both a and b None of the above None Hint 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% None Hint 63). Which one of the following flow measurements is a non-obstructive device? Rotameter Turbines Ultrasonic All of the above None Hint 64). The turn down ratio of coriolis flow measurement technology is _____? 5:1 10:1 100:1 50:1 None Hint 65). Which one of the following flow measurements has long working life? Nozzle Orifice Both a and b None of the above None Hint 66). What is the standard form of NTC? Negative Temperature Coefficient Negative Thermal Coefficient Negative Thermistor Coefficient None of the above None Hint 67). Which one of the following flow meters is relatively complex in construction? Venturi Orifice Both a and b None of the above None Hint 68). The typical accuracy of differential pressure flow meter is _______? 0.6 to 2% full scale 0.2 to 1% of reading 0.1 to 0.5% of reading None of the above None Hint 69). The figure shown below is a ___________________ type of flow meter? Venturi Electromagnetic Doppler ultrasonic Lobe type None Hint 70). What are the advantages of pitot tube? Easy installation Simple Low-cost device All of the above None Hint 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 None Hint 72). Which one of the following is an example for rate of flow meters? Nutating discs Turbine meters Positive displacement Reciprocating piston None Hint 73). What are the disadvantages of orifice plate? Poor accuracy High pressure loss Both a and b None of the above None Hint 74). Which one of the following comes under constant area variable head meter? Rotameter Cylinder Venturi meter All of the above None Hint 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% None Hint Flow Measurement MCQs for Interviews 76). The Coriolis mass flow meters affected by ________? Viscosity Temperature Pressure Gas inclusions None Hint 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 None Hint 78). The turn down ratio of turbine flow measurement technology is _________? 5:1 10:1 100:1 50:1 None Hint 79). The oval gear and oscillating piston flow meters operates in __________ flow direction? Forward Reverse Both a and b None of the above None Hint 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 None Hint 81). The figure shown below is a ___________________ type of flow meter? Venturi Electromagnetic blood Doppler ultrasonic Lobe type None Hint 82). Which one of the following flow meters has low discharge coefficient? Nozzle Orifice Both a and b None of the above None Hint 83). Which one of the flow meters suitable for opaque fluid? Transit time ultrasonic Doppler ultrasonic Both a and b None of the above None Hint 84). What is the standard form of PTC? Positive Temperature Coefficient Positive Thermal Coefficient Positive Thermistor Coefficient None of the above None 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% None Hint 86). In which one of the following flows meters, the pressure recovery is poor? Venturi Orifice Both a and b None of the above None Hint 87). The sound wave time of flight is an operating principle of __________ flow measurement technology? Vortex Magnetic Ultrasonic None of the above None Hint 88). The electromagnetic induction is an operating principle of_______ flow measurement technology? Vortex Magnetic Ultrasonic None of the above None Hint 89). The coefficient of discharge is about 0.98 in _______ meter? Venturi Orifice Both a and b None of the above None Hint 90). The fluid inertia, Coriolis effect are an operating principle of _________ flow measurement technology? Venturi Orifice Coriolis None of the above None Hint 91). The movement of fixed volumes is an operating principle of ________ flow measurement technology? Positive displacement Orifice Coriolis None of the above None Hint 92). The figure shown below is a block diagram of ___________________ flow meter? Venturi Electromagnetic blood Doppler ultrasonic Thermal None Hint 93). The turn down ratio of gear flow measurement technology is _________? 5:1 10:1 100:1 50:1 None Hint 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 None Hint 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% None Hint 96). Which one of the following meters is a type of inferential type meter? Notating disc Screw type Anemometer All of the above None Hint 96). The weirs are categorized into ___________________ types based on the shape of the opening? One Two Three Four None Hint 97). The differential pressure flow meter measures the ____? Gas Liquid Both a and b None of the above None 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 None Hint 99). Which one of the following is an example for cone meters? Dall tubes V-cones Both a and b None of the above None Hint 100). What are the advantages of orifice plate? Easy to install Low cost High reliability All of the above None Hint For More MCQs Temperature Measurement Question & Answers Measurement and Instrumentation Question & Answers Please fill in the comment box below. Time's up
