1
Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
2
How is the relationship between these three factors described in an equation?
3
What are the effects of cavitation on pumps?
4
Identify the true statement.
5
Which of the following parameters is not used for calculating pump efficiency?
6
Which of the following is one correct method to avoid cavitation?
7
What causes cavitation?
8
Identify the false statement.
Test results
Congratulations. You have passed the test and completed the Basic hydraulics and pump performance
Achieved badges:
01.
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
01.
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
01.
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
02.
Q: How is the relationship between these three factors described in an equation?
A: P = Q x H x c
02.
Q: How is the relationship between these three factors described in an equation?
A: Q = H x P x c
02.
Q: How is the relationship between these three factors described in an equation?
A: P = Q/H x c
03.
Q: What are the effects of cavitation on pumps?
A: Breakage of rotor
03.
Q: What are the effects of cavitation on pumps?
A: Pitting of suction pipe
03.
Q: What are the effects of cavitation on pumps?
A: Pitting of impeller and pump housing
04.
Q: Identify the true statement.
A: In deep-well pumps, you should check whether the pressure gauge is installed directly at the pump discharge.
04.
Q: Identify the true statement.
A: Online monitoring equipment does not check if a parameter has changed or exceeded a preset limit.
04.
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.
05.
Q: Which of the following parameters is not used for calculating pump efficiency?
A: Flow
05.
Q: Which of the following parameters is not used for calculating pump efficiency?
A: Time
05.
Q: Which of the following parameters is not used for calculating pump efficiency?
A: Pressure
05.
Q: Which of the following parameters is not used for calculating pump efficiency?
A: Power Consumption
06.
Q: Which of the following is one correct method to avoid cavitation?
A: Reduce the friction loss in the suction pipe.
06.
Q: Which of the following is one correct method to avoid cavitation?
A: Increase the flow of the pump.
06.
Q: Which of the following is one correct method to avoid cavitation?
A: Lower the elevation of the suction water level.
07.
Q: What causes cavitation?
A: Cavitation occurs when water changes its state from vapour to water at low pressure.
07.
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.
07.
Q: What causes cavitation?
A: Cavitation occurs when water flows through a pipe and a valve is closed quickly at a low atmospheric pressure
08.
Q: Identify the false statement.
A: Cavitation can occur when water is flowing in a pipe and a valve is closed too quickly.
08.
Q: Identify the false statement.
A: The MP204 device can protect the pump motor against all possible disturbances that may occur.
08.
Q: Identify the false statement.
A: The only way to avoid sand from entering a pump is through effective filtering before the pump inlet.