Measurement sheet 4

Which of the following flow-measuring elements is inherently linear and requires no signal characterizat (e.g. square -root extraction) anywhere in the loop?

• )Target   

• Venturi

• Orifice plate

• Pitot tube

• Turbine

Bernoulli's Equation is a mathematical expression of:

• The ratio of kinetic to viscous forces in a flow stream

• Friction loss as fluid moves through a rough pipe

• Potential and kinetic energies in a flow stream   

• Fluid density and compressibility in a restriction

• Vertical height and pressure for a static fluid

As an incompressible fluid moves through a restriction,

• Velocity decreases and pressure increases           

• Velocity increases and pressure increases

• Velocity increases and pressure remains the same           

• Velocity increases and pressure decreases

For accurate operation, orifice plate flowmeters require:

• Laminar flow     

• Swirls and eddies in the flow stream

• Fully- developed turbulent flow

• transitional flow

Based on the relative positions of transmitter and orifice plate , this fiow measuring is suitabi for

• Slurry flow           

• water or oil flow

• gas flow

• steam flow

or the measurement of flow the cheapest device is

• Venturi

• Dall flow tube   

• Flow nozzle

• Pitot static tube

he device which is used for making temporary measurements of flow is

• Venturi

• Dull flow tube

• Orifice plate      

• Pitot static tube

te devices used for flow obstruction is / are

• Orifice plate

• Venturi tube

• Flow nozzle and dall flow tube

• All of these

The output of a target flowmeter is:

• Proportional to volumetric flow rate

• Proportional to the square root of volumetric flow rate

• Proportional to the square of volumetric flow rate

• Proportional to the square root of volumetric flow rate

Which of these terms best describes the amount of fluid that's passing some point at any given time?"

• Flow rate

• Total flow

• Laminar flow

• Turbulent flow