3. Fluid Mechanics

Momentum Principles — Quiz

Test your understanding of momentum principles with 5 practice questions.

Practice Questions

Question 1

Which assumption is required for the Bernoulli equation but is not necessary for the integral form of the momentum equation?

Question 2

In a steady-flow control volume, the integral momentum equation states that the net external force acting on the control volume equals:

Question 3

A horizontal pipe bend with cross-sectional area A=0.2 m^2 carries water (ρ=1000 kg/m^3) at velocity v=5 m/s and turns the flow by 60° with no speed change. What is the magnitude of the force on the bend?

Question 4

A nozzle discharges water at velocity v=30 m/s through exit area A=0.01 m^2. What thrust does the nozzle produce?

Question 5

A pump must increase water pressure from P1=200 kPa to P2=450 kPa and lift it by Δz=10 m. What pump head H (in meters) is required?