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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 2 of 8 Basic

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**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:**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:**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:**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:**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:**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:**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:**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