- Grundfos Australia
- Learn
- Ecademy
- All courses
- 16 - Monitoring and controls
- Test your knowledge
Question 1 of 6
Intermediate
A VFD is a device used to change the frequency of the alternating:
Question 2 of 6
Intermediate
Which of the following pump performance regulation approaches does not allow for manual nor automatic flow/pressure adjustments?
Question 3 of 6
Intermediate
A VFD provides soft start and soft stop that helps:
Question 4 of 6
Intermediate
To achieve high irrigation efficiency in all types of irrigation, it is important to be able to control the:
Question 5 of 6
Intermediate
In which of the following circumstances should a VFD be used?
Question 6 of 6
Intermediate
Which of the following statements depict the actual benefit of a VFD.
Question 6 of 6
Intermediate
Happy with your answers?
Submit your current answers and get the final test result.
Test results
Congratulations. You have passed the test and completed the 16 - Monitoring and controls
Sorry. You did not pass the 16 - Monitoring and controls test this time
Achieved badges:
How would you rate this course?
1: A VFD is a device used to change the frequency of the alternating:
Current
1: A VFD is a device used to change the frequency of the alternating:
1: A VFD is a device used to change the frequency of the alternating:
Efficiency
You can find the answer here >
2: Which of the following pump performance regulation approaches does not allow for manual nor automatic flow/pressure adjustments?
Throttle control
2: Which of the following pump performance regulation approaches does not allow for manual nor automatic flow/pressure adjustments?
Modifying impeller diameter
2: Which of the following pump performance regulation approaches does not allow for manual nor automatic flow/pressure adjustments?
Speed control
3: A VFD provides soft start and soft stop that helps:
Reduce water consumption.
3: A VFD provides soft start and soft stop that helps:
Eliminate risk of water hammer.
3: A VFD provides soft start and soft stop that helps:
Save up to 20% energy.
4: To achieve high irrigation efficiency in all types of irrigation, it is important to be able to control the:
Energy and pressure
4: To achieve high irrigation efficiency in all types of irrigation, it is important to be able to control the:
Flow and energy
4: To achieve high irrigation efficiency in all types of irrigation, it is important to be able to control the:
Flow and pressure
5: In which of the following circumstances should a VFD be used?
If an irrigation system has unchanged flow and pressure requirements.
5: In which of the following circumstances should a VFD be used?
If an irrigation system has more than one zone.
5: In which of the following circumstances should a VFD be used?
Most common flood irrigation systems.
6: Which of the following statements depict the actual benefit of a VFD.
It converts input frequency of 50 Hz or 60 Hz to an output frequency that is twice the input frequency.
You can find the answer here >
6: Which of the following statements depict the actual benefit of a VFD.
It is used to avoid cavitation.
You can find the answer here >
6: Which of the following statements depict the actual benefit of a VFD.
It provides soft start and soft stop, thereby, minimising the risk of water hammer in the system.