Last quiz Flashcards
While calculating the size of a flow meter, the value of reference temperature is usually assumed to be
68 F
While calculating the size of a flow meter, the value of reference temperature is usually assumed to be
20 C
How many different styles of coriolis flow meters are used to measure flow
2
Coriolis flow meters are installed to measure volumetric flow
false
the region between laminar and turbulent flow is called
transition
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
venturi
if the value of reynolds number is 3000
turbulent flow
metric standard unit for volume flow rate measurement
meter cube/day
Vortex shedding frequency is directly proportional to the velocity of the fluid in the pipe and to volumetric flow rate
True
The expansion factor Y is an empirical expression used to correct the pressure drop that a compressible fluid experience when it passes through the orifices bore
False
cylindrical section of pipe with a reducing diameter which causes a restriction in the flow
Nozzle
The beta ration is defined as the ratio of the bore to the inner diameter of the pipe
True
flow meter consists of a rotor mounted coaxially in the centre of the meter body
Turbine flow meter
Measures the frequency of twisters to determine flow velocity
vortex flow meters
A value of expansion factor Y, for incompressible fluids is
1
According to metric standard mass flow rate is the number of kilograms of mass flows past a given cross sectional area per second
true
Standard SI definition of volume flow rate is the volume of fluid that flows past a given cross sectional area per hour
false
What is the value of base temperature in degree fahrenheit
60F
the orifice flow meters use the bernoullis equation to calculate the fluid flow rate by using
pressure difference
fluid media measurement…meter?
Choose option D
reynolds number is 230
laminar flow
flowmeter uses reflected ultrasonic sound to measure the fluid velocity
Doppler effect ultrasonic flowmeter
a venturi flow meters use the ____ to calculate the fluid flow rate by using the pressure difference between an obstruction in the flow
Bernoullis equation
The general flow equations are capable to the measurement of all clear, single phase, and homogeneous neutonijans fluids with pipe reynolds number >=4000
True
The turndown of differential pressure flow meters is the ratio of the ______
Maximum flow to the minimum flow they can measure
not dependable on the particles in the fluid
vortex?
what can be determine by measuring the difference in fluid pressure upstream and downstream of the orifice plate
volumetric flow rate
Ultrasonic waves travel in the same manner as light or microwave, however they can propagate through ________
any substance
The performance of flowmeters is influenced by a dimensionless unit called the
reynolds number
NOT a basic requirement of flow measurement
low turn down ratio
gas used as a reference gas
dry air
flowmeter that can detect the flow of the conductive fluids only
electromagnetic flowmeters
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
False
thin, circular metal plate with a hole in the middle that is place in the pipe between two flanges to provide restriction?
orifice plate
NOT a mass flow rate measurement unit
gallon/second
Imperial standard unit for volume flow rate measurement
gallon/hr
flowmeter that must have turbulent type of flow
Differential pressure flowmeter
slurry type…flowmeter?
Magnetic
the orifice flow meters use the bernoullis equation to calculate the fluid flow rate by using
pressure difference
The mass and volume flow rate equations depends on the density of the fluid
True
