Industrial Instrumentation: Flow Sensors and Metering
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Questions and Answers

What is the relationship between total pressure and static pressure in an ideal flow through a nozzle?

  • Total pressure is the difference between static and dynamic pressure
  • Total pressure is equal to static pressure
  • Total pressure is half of the static pressure
  • Total pressure is the sum of static and dynamic pressure (correct)

What is the condition for incompressible flow?

  • Pressure is constant
  • Velocity is constant
  • Density is constant (correct)
  • Flow rate is constant

What is the relationship between the flow rates at the inlet and outlet of a nozzle for an incompressible flow?

  • Q1 < Q2
  • Q1 is proportional to Q2
  • Q1 = Q2 (correct)
  • Q1 > Q2

What is the expression for the dynamic pressure in a nozzle?

<p>1/2 ρv^2 (D)</p> Signup and view all the answers

What is the value of the compressibility factor C for an incompressible flow?

<p>1 (C)</p> Signup and view all the answers

What is the expression for the flow rate through a nozzle for a real flow?

<p>YC A2 1 (√(A2/A1) - 1) √(2ΔP/ρ) (C)</p> Signup and view all the answers

What is the relationship between the pressure difference ΔP and the areas A1 and A2 of a nozzle for an ideal flow?

<p>ΔP = P1 - P2 = 1/2 ρv2 (1 - (A2/A1)^2) (C)</p> Signup and view all the answers

What is the expression for the velocity at the outlet of a nozzle for an ideal flow?

<p>v2 = √(2ΔP/ρ) (1 - (A2/A1)) (A)</p> Signup and view all the answers

What is the condition for the flow to be considered as an ideal flow through a nozzle?

<p>The flow is frictionless (B)</p> Signup and view all the answers

What is the relationship between the total pressure and the static pressure at a point in a nozzle flow?

<p>P0 = P + 1/2 ρv^2 (B)</p> Signup and view all the answers

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