Basic Instrumentation Ch 9 Flashcards
Flow measurement is the process of determining the quantity of fluid that passes a particular point in a given interval of time
a) true
b) false
a) true
The industry calls differential pressure, that occurs across a restriction in the flow line, head
a) true
b) false
a) true
What is the most commonly used orifice?
a) mouth
b) anus
c) vagina
d) concentric
d) concentric
What is the velocity of flow equation
a) Q = K (np) ^1/2
b) V = Q (np) ^1/2
c) V =(2gh) ^ 1/2
d) V = K x Q x P
c) V =(2gh) ^ 1/2
A blunt object placed in a fluid’s flow stream creates swirls of fluid that fluctuate around the object
a) vortex flowmeters
b) mass flowmeters
c) magnetic flowmeters
d) none above
a) vortex flowmeters
A Dall tube’s design differs significantly from the venture in two respects:
- An abrupt shoulder at the inlet cone comes after a short uniform selection
- The low-pressure tap at the throat leads to an annular groove that encircles that throat
a) true
b) false
a) true
Select 3 electronic flow sensors and meters
a) something else
b) mass flowmeters
c) vortex flowmeters
d) electronic differential pressure
e) Venturi flowmeters
b) mass flowmeters
c) vortex flowmeters
d) electronic differential pressure
A popular mechanical means of measuring differential pressure is based on a mercury-filled V-tube manometer
a) true
b) false
a) true
A variable-area flowmeter uses mechanisms that act against the force of fluid flow to drive a pen
a) true
b) false
a) true
The key to a turbine meter’s operation is a permanent magnet placed in a _______.
a) coil
b) pipe
c) parallel circuit
d) fluids flow stream
a) coil
A magnetic flowmeter restricts liquid flow?
a) true
b) false
b) false
A turbine flowmeter is simple, easy to install and use, and accurate within ___
a) 80%
b) 100%
c) 90 %
d) 99 %
d) 99%
