What are the effects of cavitation on pumps?
Identify the false statement.
How is the relationship between these three factors described in an equation?
Identify the true statement.
Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
Identify the correct formula for calculating pump efficiency.
Identify the reasons for reduction in pump performance from the given options:
Test results
Congratulations. You have passed the test and completed the 13 - Basic hydraulics and pump performance
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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: Identify the false statement.
A: Cavitation can occur when water is flowing in a pipe and a valve is closed too quickly.
Q: Identify the false statement.
A: The MP204 device can protect the pump motor against all possible disturbances that may occur.
Q: Identify the false statement.
A: The only way to avoid sand from entering a pump is through effective filtering before the pump inlet.
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 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: Friction loss is dependent on the [xxxxxxxx] of the fluid.
A: Viscosity
Q: Friction loss is dependent on the [xxxxxxxx] of the fluid.
A: Velocity
Q: Friction loss is dependent on the [xxxxxxxx] of the fluid.
A: Volume
Q: Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
A: Temperature sensors
Q: Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
A: Signal wire
Q: Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
A: Insulation system
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)
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