Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
Which of the following is one correct method to avoid cavitation?
Identify the reasons for reduction in pump performance from the given options:
Identify the false statement.
How can friction loss in a system be minimised?
Select the three parameters of most interest in water pumping systems:
How is the relationship between these three factors described in an equation?
Test results
Congratulations. You have passed the test and completed the 13 - Basic hydraulics and pump performance
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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: Which of the following is one correct method to avoid cavitation?
A: Reduce the friction loss in the suction pipe.
Q: Which of the following is one correct method to avoid cavitation?
A: Increase the flow of the pump.
Q: Which of the following is one correct method to avoid cavitation?
A: Lower the elevation of the suction water level.
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: 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 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: 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: 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: 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