6 questions Intermediate

ECADEMY test

37 - Grundfos SQ/SQE

This course test contains 6 questions and can be retaken at any time.

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Question 2 of 6 Intermediate

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

Question 4 of 6 Intermediate

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

Question 6 of 6 Intermediate

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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 are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
A: Domestic water supply & Irrigation
Correct
Q: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
A: In original 4” boreholes where sediments over the years have narrowed the hole.
Correct
Q: By how much does the supply voltage decrease before the motor contactor stops the pump?
A: More than 10 %
Correct
Q: Which of these isn’t a key dry-run protection benefit for the installer?
A: The installer doesn’t have to worry about water bursts
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.