Which of the following parameters is not used for calculating pump efficiency?
Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
How is the relationship between these three factors described in an equation?
How can friction loss in a system be minimised?
Which of the following is one correct method to avoid cavitation?
Identify the reasons for reduction in pump performance from the given options:
What causes cavitation?
Test results
Congratulations. You have passed the test and completed the 13 - Basic hydraulics and pump performance
Achieved badges:
Q: Which of the following parameters is not used for calculating pump efficiency?
A: Flow
Q: Which of the following parameters is not used for calculating pump efficiency?
A: Time
Q: Which of the following parameters is not used for calculating pump efficiency?
A: Pressure
Q: Which of the following parameters is not used for calculating pump efficiency?
A: Power Consumption
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: 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
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: 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: 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