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8 questions Basic

## ECADEMY test

### 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

Question 2 of 8 Basic

Question 3 of 8 Basic

Question 4 of 8 Basic

Question 5 of 8 Basic

Question 6 of 8 Basic

Question 8 of 8 Basic

Question 8 of 8 Basic

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**Q:**What makes mixed flow impellers different from axial flow impellers?

**A:**Mixed flow impellers deliver higher rotation speeds

**01:**Mixed flow impellers deliver higher rotation speeds Your answer

**02:**They subject the fluid to a degree of radial flow

**03:**They’re not nearly as good as a fully axial flow impeller

**Q:**What makes mixed flow impellers different from axial flow impellers?

**A:**They subject the fluid to a degree of radial flow

**Q:**What makes mixed flow impellers different from axial flow impellers?

**A:**They’re not nearly as good as a fully axial flow impeller

**01:**Mixed flow impellers deliver higher rotation speeds

**02:**They subject the fluid to a degree of radial flow

**03:**They’re not nearly as good as a fully axial flow impeller Your answer

**Q:**At the very highest level, what are the two main types of pump?

**A:**Vertical pumps and horizontal pumps

**01:**Vertical pumps and horizontal pumps Your answer

**02:**Positive displacement pumps and centrifugal pumps

**03:**Submersible and sanitary pumps

**Q:**At the very highest level, what are the two main types of pump?

**A:**Positive displacement pumps and centrifugal pumps

**Q:**At the very highest level, what are the two main types of pump?

**A:**Submersible and sanitary pumps

**01:**Vertical pumps and horizontal pumps

**02:**Positive displacement pumps and centrifugal pumps

**03:**Submersible and sanitary pumps Your answer

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

**A:**72%

**01:**72% Your answer

**02:**About 50%

**03:**3.5%

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

**A:**About 50%

**01:**72%

**02:**About 50% Your answer

**03:**3.5%

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

**A:**3.5%

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

**A:**Net potential surface heat

**01:**Net potential surface heat Your answer

**02:**Net peripheral suction height

**03:**Net positive suction head

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

**A:**Net peripheral suction height

**01:**Net potential surface heat

**02:**Net peripheral suction height Your answer

**03:**Net positive suction head

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

**A:**Net positive suction head

**Q:**Are axial flow impellers used in closed pump designs?

**A:**Yes

**01:**Yes Your answer

**02:**Sometimes

**03:**No

**Q:**Are axial flow impellers used in closed pump designs?

**A:**Sometimes

**01:**Yes

**02:**Sometimes Your answer

**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

**01:**Flow at a given head Your answer

**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

**03:**Overall efficiency Your answer

**Q:**In what year was the centrifugal pump invented?

**A:**1689

**Q:**In what year was the centrifugal pump invented?

**A:**1789

**01:**1689

**02:**1789 Your answer

**03:**1923

**Q:**In what year was the centrifugal pump invented?

**A:**1923

**01:**1689

**02:**1789

**03:**1923 Your answer

**Q:**Centrifugal pumps can be categorised into the following groups…

**A:**Forward flow, backward flow, static flow

**01:**Forward flow, backward flow, static flow Your answer

**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

**02:**Vertical flow, horizontal flow, diagonal flow Your answer

**03:**Radial flow, mixed flow, axial flow

**Q:**Centrifugal pumps can be categorised into the following groups…

**A:**Radial flow, mixed flow, axial flow