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 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 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 4 of 10 Intermediate

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

Question 5 of 10 Intermediate

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

Question 6 of 10 Intermediate

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

Question 7 of 10 Intermediate

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

Question 8 of 10 Intermediate

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

Question 10 of 10 Intermediate

10 Which submersible pump was replaced with a Grundfos SQ?

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: 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
04.
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
05.
Q: What happens if the water level in the well drops below the inlet?
A: The motor power consumption stays the same
Correct
06.
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
07.
Q: How many times higher than nominal speed does the motor current reach during the first milliseconds?
A: Seven times higher
Correct
08.
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
09.
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
10.
Q: Which submersible pump was replaced with a Grundfos SQ?
A: A 4” submersible pump