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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

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Question 8 of 8 Basic

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**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

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

**A:**Performance

**01:**Performance Your answer

**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

**02:**The type of pump Your answer

**03:**Flow

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

**A:**Flow

**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:**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

**02:**No Your answer

**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

**03:**Only in the case of immersible pumps Your answer

**Q:**What kind of pumps would normally NOT have a radial flow impeller?

**A:**Circulating pumps

**01:**Circulating pumps Your answer

**02:**Immersible pumps

**03:**Sewage treatment pumps

**Q:**What kind of pumps would normally NOT have a radial flow impeller?

**A:**Immersible pumps

**01:**Circulating pumps

**02:**Immersible pumps Your answer

**03:**Sewage treatment pumps

**Q:**What kind of pumps would normally NOT have a radial flow impeller?

**A:**Sewage treatment pumps

**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:**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%