8 questions Intermediate

ECADEMY test

Groundwater Pumping

This course test contains 8 questions and can be retaken at any time.

You must answer all questions correctly to pass the test and complete the course.

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Question 1 of 8 Intermediate

1 What may cause friction loss in the pipes?

Question 2 of 8 Intermediate

2 What is the most effective way to stay updated on your pump’s condition?

Question 3 of 8 Intermediate

3 On top of energy-efficient pump operation, how does a frequency drive benefit your installation?

Question 5 of 8 Intermediate

5 In which areas is there a bigger risk of pumping corrosive groundwater?

Question 7 of 8 Intermediate

7 How does over- and under voltage, phase unbalance and phase loss impact the pump motor?

Question 8 of 8 Intermediate

8 What should the minimum flow past the motor be to ensure sufficient motor cooling?

Question 8 of 8 Intermediate

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Correct
01.
Q: What may cause friction loss in the pipes?
A: Scaling
Correct
02.
Q: What is the most effective way to stay updated on your pump’s condition?
A: Remote online monitoring
Correct
03.
Q: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
A: It comes with a built-in motor protection
Correct
04.
Q: Why is it important to know the water drawdown?
A: The more the drawdown increases during pump operation, the more pressure is required to lift the groundwater to the surface
Correct
05.
Q: In which areas is there a bigger risk of pumping corrosive groundwater?
A: In coastal areas
Correct
06.
Q: Why is it a good idea to make a well where the groundwater level is as high as possible?
A: The shorter the distance is to the water the less expensive it is to make the borehole and subsequently to pump the water to the surface
Correct
07.
Q: How does over- and under voltage, phase unbalance and phase loss impact the pump motor?
A: It raises the motor temperature, reducing the lifetime
Correct
08.
Q: What should the minimum flow past the motor be to ensure sufficient motor cooling?
A: 0,15 m/s