8 questions Basic

### 36 - Basic Principles and Pump Types

This course test contains 8 questions and can be retaken at any time.

You must answer all questions correctly to pass the test and complete the course.

Question 1 of 8 Basic

Centrifugal pumps can be categorised into the following groups…

Question 2 of 8 Basic

Can centrifugal pumps be connected directly to an asynchronous motor?

Question 3 of 8 Basic

What is a main disadvantage of a centrifugal pump?

Question 4 of 8 Basic

Are axial flow impellers used in closed pump designs?

Question 5 of 8 Basic

What does QH curve show?

Question 6 of 8 Basic

What does ‘NPSH’ stand for in the NPSH-curve?

Question 7 of 8 Basic

In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…

Question 8 of 8 Basic

How much of the world’s total volume of water is fresh water?

Question 8 of 8 Basic

# Test results

Congratulations. You have passed the test and completed the 36 - Basic Principles and Pump Types

### How would you rate this course?

You are welcome to add your rating of this course. Remember that you have to be logged in before you take the test to be able to give your rating.

Sorry. You did not pass the 36 - Basic Principles and Pump Types test this time

### How would you rate this course?

You are welcome to add your rating of this course. Remember that you have to be logged in before you take the test to be able to give your rating.

Q: Centrifugal pumps can be categorised into the following groups…
A: Forward flow, backward flow, static flow
02: Vertical flow, horizontal flow, diagonal flow
03: Radial flow, mixed flow, axial flow
Q: Centrifugal pumps can be categorised into the following groups…
A: Vertical flow, horizontal flow, diagonal flow
01: Forward flow, backward flow, static flow
03: Radial flow, mixed flow, axial flow
Q: Centrifugal pumps can be categorised into the following groups…
A: Radial flow, mixed flow, axial flow
Q: Can centrifugal pumps be connected directly to an asynchronous motor?
A: Yes
Q: Can centrifugal pumps be connected directly to an asynchronous motor?
A: No
01: Yes
03: Only in the case of immersible pumps
Q: Can centrifugal pumps be connected directly to an asynchronous motor?
A: Only in the case of immersible pumps
01: Yes
02: No
Q: What is a main disadvantage of a centrifugal pump?
A: They require a lot of maintenance
02: They contain a lot of moving parts
03: They cannot create suction by themselves
Q: What is a main disadvantage of a centrifugal pump?
A: They contain a lot of moving parts
01: They require a lot of maintenance
03: They cannot create suction by themselves
Q: What is a main disadvantage of a centrifugal pump?
A: They cannot create suction by themselves
Q: Are axial flow impellers used in closed pump designs?
A: Yes
02: Sometimes
03: No
Q: Are axial flow impellers used in closed pump designs?
A: Sometimes
01: Yes
03: No
Q: Are axial flow impellers used in closed pump designs?
A: No
Q: What does QH curve show?
A: Flow at a given head
02: Head at a given flow
03: Overall efficiency
Q: What does QH curve show?
A: Head at a given flow
Q: What does QH curve show?
A: Overall efficiency
01: Flow at a given head
02: Head at a given flow
Q: What does ‘NPSH’ stand for in the NPSH-curve?
A: Net potential surface heat
02: Net peripheral suction height
Q: What does ‘NPSH’ stand for in the NPSH-curve?
A: Net peripheral suction height
01: Net potential surface heat
Q: What does ‘NPSH’ stand for in the NPSH-curve?
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: Performance
02: The type of pump
03: Flow
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: The type of pump
01: Performance
03: Flow
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: Flow
Q: How much of the world’s total volume of water is fresh water?
A: 72%