Quiz 2

Question 1

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

Answer 1

maximum flow to the minimum flow they can measure

Question 2

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

Answer 2

pressure difference

Question 3

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

Answer 3

1

Question 4

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

Answer 4

True

Question 5

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

Answer 5

Transit Time Difference Ultrasonic flowmeters

Question 6

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

Answer 6

Vortex Flow Meter

Question 7

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

Answer 7

laminar flow

Question 8

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

Answer 8

gallon / second

Question 9

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

Answer 9

True

Question 10

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

Answer 10

any substance

Question 11

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

Answer 11

20oC

Question 12

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

Answer 12

gallon/hr

Question 13

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.

Answer 13

False

Question 14

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

Answer 14

votex shedding flowmeters

Question 15

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?

Answer 15

Venturi

Question 16

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

Answer 16

2

Question 17

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

Answer 17

False

Question 18

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

Answer 18

Ultrasonic
Electromagnetic
Differential Pressure
Vortex

Question 19

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

Answer 19

Orifice

Question 20

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

Answer 20

Nozzle

Question 21

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

Answer 21

Bernoulli’s equation

Question 22

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

Answer 22

meter cube / day

Question 23

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

Answer 23

True

Question 24

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

Answer 24

Electromagnetic flowmeters

Question 25

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

Answer 25

Dry air

Question 26

Coriolis Flow Meters are installed to measure volumetric flow.

Answer 26

False

Question 27

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

Answer 27

True

Question 28

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

Answer 28

volumetric flow rate

Question 29

The region between Laminar and Turbulent flow is called ______________.

Answer 29

transition

Question 30

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

Answer 30

True

Question 31

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

Answer 31

Electromagnetic

Question 32

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.

Answer 32

False

Question 33

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

Answer 33

Doppler Effect ultrasonic flowmeters

Question 34

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?

Answer 34

orifice plate

Question 35

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

Answer 35

68 oF

Question 36

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.

Answer 36

True

Question 37

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

Answer 37

Turbine Flow Meter

Question 38

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

Answer 38

True

Question 39

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

Answer 39

Reynolds Number

Question 40

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

Answer 40

low turn-down ratio