10 questions Intermediate

ECADEMY test

37 - Grundfos SQ/SQE

This course test contains 10 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 10 Intermediate

What happens if the static water level is too low?

Question 2 of 10 Intermediate

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

Question 3 of 10 Intermediate

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

Question 4 of 10 Intermediate

Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?

Question 5 of 10 Intermediate

In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?

Question 7 of 10 Intermediate

What is a key installer benefit of the voltage protection in SQ/SQE?

Question 10 of 10 Intermediate

Which of these isn’t a key dry-run protection benefit for the installer?

Question 10 of 10 Intermediate

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Correct
Q: What happens if the static water level is too low?
A: The water level is brought down below the inlet of the pump
Correct
Q: What happens if the water level in the well drops below the inlet?
A: The motor power consumption stays the same
Correct
Q: By how much does the supply voltage decrease before the motor contactor stops the pump?
A: More than 10 %
Correct
Q: Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
A: Domestic water supply & Irrigation
Correct
Q: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
A: It reduces the occurrence of water hammer in the pipes and minimises wear during start-up.
Correct
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.
Correct
Q: What is a key installer benefit of the voltage protection in SQ/SQE?
A: Fewer service visits
Correct
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
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
Q: Which of these isn’t a key dry-run protection benefit for the installer?
A: He doesn’t have to worry about water bursts