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

Question 2 of 8 Intermediate

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

Question 3 of 8 Intermediate

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

Question 4 of 8 Intermediate

4 By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?

Question 5 of 8 Intermediate

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

Question 8 of 8 Intermediate

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Correct
Q: In which areas is there a bigger risk of pumping corrosive groundwater?
A: In coastal areas
Correct
Q: What should the minimum flow past the motor be to ensure sufficient motor cooling?
A: 0,15 m/s
Correct
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
Q: By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?
A: Energy is wasted as the pump continues to run at full speed
Correct
Q: What is the most effective way to stay updated on your pump’s condition?
A: Remote online monitoring
Correct
Q: What can be done to the well if sand continues to enter a well after the well development has been carried out?
A: The well driller can try to run the pump at its maximum capacity in short periods of time over a couple of days
Correct
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
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