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 1 of 10 Intermediate

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

Question 2 of 10 Intermediate

2 Is the SQE pump able to provide constant pressure?

Question 6 of 10 Intermediate

6 What happens if the static water level is too low?

Question 7 of 10 Intermediate

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

Question 8 of 10 Intermediate

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

Question 9 of 10 Intermediate

9 How many times higher than nominal speed does the motor current reach during the first milliseconds?

Question 10 of 10 Intermediate

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Correct
Q: What is the most commonly used starting method for motors in 4” conventional pumps?
A: Direct on line
Correct
Q: Is the SQE pump able to provide constant pressure?
A: Yes.
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: 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: How does the integrated dry-running protection work?
A: It automatically shuts down the pump if water shortage is detected.
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 is a key installer benefit of the voltage protection in SQ/SQE?
A: Fewer service visits
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
Correct
Q: How many times higher than nominal speed does the motor current reach during the first milliseconds?
A: Seven times higher
Correct
Q: Why must the pump unit be installed below the dynamic water table?
A: To avoid the risk of dry-running during operation.