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 2 of 8 Intermediate

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

Question 3 of 8 Intermediate

3 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 could be the consequences of using an undersized pump in a well?

Question 6 of 8 Intermediate

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

Question 8 of 8 Intermediate

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Correct
01.
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
02.
Q: In which areas is there a bigger risk of pumping corrosive groundwater?
A: In coastal areas
Correct
03.
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
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: What could be the consequences of using an undersized pump in a well?
A: The pump may not be able to deliver the required capacity
Correct
06.
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
07.
Q: What is well development?
A: A process that ensures that the well’s sand filter has been improved so the well produces clean, sand-free water
Correct
08.
Q: How is it possible to protect the motor against bad power supply?
A: By means of an electronic motor protection that senses all possible deviations