Select the three parameters of most interest in water pumping systems:
What are the effects of cavitation on pumps?
How can friction loss in a system be minimised?
What causes cavitation?
Identify the true statement.
Identify the reasons for reduction in pump performance from the given options:
How is the relationship between these three factors described in an equation?
Identify the correct formula for calculating pump efficiency.
Test results
Congratulations. You have passed the test and completed the 13 - The Basic Hydraulics and Pump Performance Course
Achieved badges:
Q: Select the three parameters of most interest in water pumping systems:
A: Flow, head and energy
Q: Select the three parameters of most interest in water pumping systems:
A: Flow, conductivity and head
Q: Select the three parameters of most interest in water pumping systems:
A: Head, turbidity and velocity
Q: What are the effects of cavitation on pumps?
A: Breakage of rotor
Q: What are the effects of cavitation on pumps?
A: Pitting of suction pipe
Q: What are the effects of cavitation on pumps?
A: Pitting of impeller and pump housing
Q: How can friction loss in a system be minimised?
A: By increasing the pipe diameter
Q: How can friction loss in a system be minimised?
A: By using 2 smaller pumps instead of one bigger pump
Q: How can friction loss in a system be minimised?
A: By adding a Tee to the piping system
Q: What causes cavitation?
A: Cavitation occurs when water changes its state from vapour to water at low pressure.
Q: What causes cavitation?
A: Cavitation occurs when water boils at 100°C and changes its state from water to vapour at normal atmospheric pressure.
Q: What causes cavitation?
A: Cavitation occurs when water flows through a pipe and a valve is closed quickly at a low atmospheric pressure
Q: Identify the true statement.
A: In deep-well pumps, you should check whether the pressure gauge is installed directly at the pump discharge.
Q: Identify the true statement.
A: Online monitoring equipment does not check if a parameter has changed or exceeded a preset limit.
Q: Identify the true statement.
A: If all the parameters are recorded immediately after the pump has been installed, you can use them as benchmark against future data.
Q: Identify the reasons for reduction in pump performance from the given options:
A: Bad power supply
Q: Identify the reasons for reduction in pump performance from the given options:
A: Reduction in size of irrigation zone
Q: Identify the reasons for reduction in pump performance from the given options:
A: Changes in energy requirements
Q: How is the relationship between these three factors described in an equation?
A: P = Q x H x c
Q: How is the relationship between these three factors described in an equation?
A: Q = H x P x c
Q: How is the relationship between these three factors described in an equation?
A: P = Q/H x c
Q: Identify the correct formula for calculating pump efficiency.
A: (P1 × Q)/(c × H)
Q: Identify the correct formula for calculating pump efficiency.
A: (p x H × Q)/(367 × P1)
Q: Identify the correct formula for calculating pump efficiency.
A: (H × P1)/(c × Q)