Quiz 2 Flashcards

1
Q

The turndown of differential pressure flow meters is the ratio of the

A

maximum flow to the minimum flow they can measure

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2
Q

The orifice flow meters use the Bernoulli’s equation to calculate the fluid flow
rate by using ________________ between an obstruction in the flow.

A

pressure difference

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3
Q

The value of expension factor Y, for incompressible fluids is __________.

A

1

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4
Q

Different styles of Coriolis Flow Meters operates on the same principle.

A

True

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5
Q

Which one of the following flow meters are not dependable on the particles
in the fluid?

A

Transit Time Difference Ultrasonic flowmeters

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6
Q

Which one of the following meters measure the frequency of twisters to
determine flow velocity?

A

Vortex Flow Meter

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7
Q

Which one of the following types of flow occurs, if the value of Reynolds
Number is 230.

A

laminar flow

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8
Q

Which one of the following is NOT a mass flow rate measurement unit?

A

gallon / second

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9
Q

The mass and volume flow rate equations depends on the density of the fluid.

A

True

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10
Q

Ultrasonic waves travel in the same manner as light or microwave, however
they can propagates through __________.

A

any substance

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11
Q

While calculating the size of a flow meter, the value of reference termperature
is usually assumed to be _______ oC.

A

20oC

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12
Q

Which one of the following is an imperial standard unit for volume flow rate
measurement?

A

gallon/hr

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13
Q

Relative density for a gas is defined as a dimension value that expresses the
ratio of the density of the flowing fluid to the density of a reference gas as the
same temperature and pressure reference conditions.

A

False

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14
Q

Which one of the following flowmeters must have turbulent type of flow?

A

votex shedding flowmeters

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15
Q

Which one of the following devices is a cylindrical length of pipe with
reducing diameter which causes a restriction in the flow, followed by an
increasing diameter to produce a gradual pressure recovery?

A

Venturi

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16
Q

How many different styles of coriolis flow meters are used to measure the
flow?

A

2

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17
Q

Standard SI definition of volume flow rate is the volume of fluid that flows
past a given cross sectional area per hour.

A

False

18
Q

Which one of the following flowmeters can be used for fluid media
measurement?

A

Ultrasonic
Electromagnetic
Differential Pressure
Vortex

19
Q

Which one the following flow meters uses Square root signal characteristic?

A

Orifice

20
Q

Which one of the following devices is a cylindrical section of pipe with a
reducing diameter which causes a restriction in the flow?

A

Nozzle

21
Q

The venturi flow meters use the _______________________ to calculate the fluid
flow rate by using the pressure difference between an obstruction in the flow.

A

Bernoulli’s equation

22
Q

Which one of the following is a metric standard unit for volume flow rate
measurement?

A

meter cube / day

23
Q

According to Metric Standard mass flow rate is the number of kilograms of
mass flows past a given cross sectional area per second.

A

True

24
Q

Which one of the following flowmeters can detect the flow of the conductive
fluids only?

A

Electromagnetic flowmeters

25
Q

Which one of the following gas is used as a reference gas?

A

Dry air

26
Q

Coriolis Flow Meters are installed to measure volumetric flow.

A

False

27
Q

The Beta Ratio is defined as the ratio of the bore to the inner diameter of the
pipe.

A

True

28
Q

Which one of the following measures can be determined by measuring the
difference in fluid pressure upstream and downstream of the orifice plate?

A

volumetric flow rate

29
Q

The region between Laminar and Turbulent flow is called ______________.

A

transition

30
Q

Vortex shedding frequency is directly proportional to the velocity of the fluid
in the pipe and to volumetric flow rate.

A

True

31
Q

If the measuring media is Slurry type, which one of the following flowmeters
is commonly used?

A

Electromagnetic

32
Q

The expension factor Y is an emperical expression used to correct the
pressure drop that a comressible fluid experience when it passes through the
orifice’s bore.

A

False

33
Q

Which one of the following flowmeters uses reflected ultrasonic sound to
measure the fluid velocity?

A

Doppler Effect ultrasonic flowmeters

34
Q

Which one of the following device is a thin, circular metal plate with a hole in
the middle that is placed in the pipe between two flanges to provide a
restriction?

A

orifice plate

35
Q

While calculating the size of a flow meter, the value of reference termperature
is usually assumed to be _______ oF.

A

68 oF

36
Q

The pipe Reynolds Number is a dimensionless ratio of forces used to correlate
the variations in discharge coefficient with the chnages in fluid properties,
flow rate, and orifice meter geometry.

A

True

37
Q

Which one of the following flow meters consists of a rotor mounted coaxially
in the center of the meter body?

A

Turbine Flow Meter

38
Q

The General Flow Equations are capable to the measurement of all clear,
singlephase, and homogeneous Newtonian fluids with pipe Reynolds Number
>= 4000.

A

True

39
Q

The performance of flowmeters is influenced by a demensionless unit called
the ________________.

A

Reynolds Number

40
Q

Which one of the following is NOT a basic requirement of flow measurement?

A

low turn-down ratio