10 questions Intermediate

ECADEMY test

37 - Grundfos SQ/SQE

This course test contains 10 questions and can be retaken at any time.

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Question 2 of 10 Intermediate

2 What is the most commonly used starting method for motors in 4” conventional pumps?

Question 3 of 10 Intermediate

3 What happens if the water level in the well drops below the inlet?

Question 5 of 10 Intermediate

5 What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?

Question 6 of 10 Intermediate

6 Is the SQE pump able to provide constant pressure?

Question 8 of 10 Intermediate

8 Which submersible pump was replaced with a Grundfos SQ?

Question 9 of 10 Intermediate

9 By how much does the supply voltage decrease before the motor contactor stops the pump?

Question 10 of 10 Intermediate

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Correct
01.
Q: Where is domestic groundwater extraction typically relevant?
A: In remote areas where it is too costly to extend the municipal water supply to just a few houses.
Correct
02.
Q: What is the most commonly used starting method for motors in 4” conventional pumps?
A: Direct on line
Correct
03.
Q: What happens if the water level in the well drops below the inlet?
A: The motor power consumption stays the same
Correct
04.
Q: How does the integrated dry-running protection work?
A: It automatically shuts down the pump if water shortage is detected.
Correct
05.
Q: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
A: Between 150 V and 315 V
Correct
06.
Q: Is the SQE pump able to provide constant pressure?
A: Yes.
Correct
07.
Q: Why is it important to protect the pump from over- and under voltage?
A: Because large variations in power supply will damage the motor over time.
Correct
08.
Q: Which submersible pump was replaced with a Grundfos SQ?
A: A 4” submersible pump 
Correct
09.
Q: By how much does the supply voltage decrease before the motor contactor stops the pump?
A: More than 10 %
Correct
10.
Q: Why is correct sizing of the submersible pump important?
A: Because an undersized pump will not be able to deliver the required flow and pressure and an oversized pump reduces energy efficiency, which increases operational costs.