FLOW METERS

Measure the rate at which a fluid moves through a pipe

What is the primary purpose of a flowmeter?

Inferential (Non - Positive - Displacement Flowmeter)

Which type of flowmeter does not directly measure total flow, but infers it using physical laws?

It causes a pressure drop used to measure flow

In a venturi meter, why is the throat section important?

Rises

In a rotameter, when the flow rate increases, the float:

They allow continuous monitoring, detect leaks, and support efficient resource management.

Which of the following best describes a key benefit of using flowmeters in water distribution networks?

Measure the volume of the gas produced and help manage energy output

In biogas systems, flowmeters are primarily used to:

Ultrasonic flowmeter tracks sound wave travel time, Coriolis mass flowmeter measures the oscillations to distinguish the density of the fluid

Which correctly matches each flowmeter to its concept?

Velocity is minimum (zero)

In a pitot tube, if the pressure difference delta P measured is zero, what can you conclude about the velocity v?

It increases

If you decrease the cross - sectional area in a pipe while keeping the volumetric flow rate constant, what must happen to the fluid velocity?

Ductile

Which of the following is not a disadvantage of ceramics?

Flowmeter

A type of flow instrument that is used to indicate the amount of liquid, gas, or vapor moving through a pipe or conduit by measuring linear, non - linear, mass, or volumetric flow rates.

Fictitious force in a rotating frame

In a Coriolis flowmeter, which principle best explains the twisting of the vibrating tube as fluid flows through it?

The float accelerates upward as buoyant force temporarily exceeds the sum of gravity and lagging drag

Immediately after a sudden increase in fluid velocity in a rotameter, which statement best explains the float’s motion?

Ultrasonic Doppler

Which velocity meter reflects the sound waves off particles or bubbles in the fluid to determine the flow velocity?

Angular - Momentum Mass Flowmeter

Which of the following is the other term for Axial Flow Transverse Momentum Mass Flowmeter?

They measure flow rate for accuracy, safety, and efficiency

Which of the following best describes the overall function of flowmeters across industries?

It includes molybdenum

What distinguishes 316 stainless steel from 304 stainless steel in terms of corrosion resistance?

Brittle and fails when exposed to fire and rapid cooling

In applications involving gas or oil service, what is one of the primary drawbacks of cast iron?

Higher permanent pressure loss

In the equation (p1 - p4) / (p1 - p2) = 1 - Beta². What does smaller Beta indicate?

Electromagnetic Flowmeter

Which type of velocity meter requires the fluid to be electrically conductive in order to function?

To measure the flow rate of a moving fluid

Which of the following best describes the function of a flowmeter in a process system?

Faraday’s Law of Induction

An electromagnetic flowmeter operates based on which scientific principle?

Height of the float in a tapered tube

In a variable area flow meter such as a Rotameter, what determines the flow rate?

Pressure Relief Flow Meters

Which of the following is NOT a classification of flow meters?

It adjusts for deviations between theoretical ideal flow and real flow due to energy losses

What is the purpose of the device coefficient in flow measurements?

The point in fluid stream where the diameter is smallest and velocity is highest

What is vena contracta in fluid flow?

Corrosion resistance

When selecting materials for a flow meter, which factor is most critical for use with highly corrosive chemicals?

Rubber and elastomers

Which material listed is primarily used in flow meters to provide sealing and absorb vibration or mechanical shock?

Land Surveying

Which of the following is not an application of a flow meter?

Conveyor Transportation

Which is not an application of flowmeters in the Food and Beverage Industry?