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8 questions Basic

## ECADEMY test

### Basic hydraulics and pump performance

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 7 of 8 Basic

Question 8 of 8 Basic

Question 8 of 8 Basic

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**Q:**Identify the correct formula for calculating pump efficiency.

**A:**P1×Q/cxH

**01:**P1×Q/cxH Your answer

**02:**HxQ/cxP1

**03:**HxP1/cxQ

**Q:**Identify the correct formula for calculating pump efficiency.

**A:**HxQ/cxP1

**Q:**Identify the correct formula for calculating pump efficiency.

**A:**HxP1/cxQ

**01:**P1×Q/cxH

**02:**HxQ/cxP1

**03:**HxP1/cxQ Your answer

**Q:**Friction loss is dependent on the [xxxxxxxx] of the fluid.

**A:**Viscosity

**01:**Viscosity Your answer

**02:**Velocity

**03:**Volume

**Q:**Friction loss is dependent on the [xxxxxxxx] of the fluid.

**A:**Velocity

**Q:**Friction loss is dependent on the [xxxxxxxx] of the fluid.

**A:**Volume

**01:**Viscosity

**02:**Velocity

**03:**Volume Your answer

**Q:**Select the three parameters of most interest in water pumping systems:

**A:**Flow, head and energy

**Q:**Select the three parameters of most interest in water pumping systems:

**A:**Flow, conductivity and head

**01:**Flow, head and energy

**02:**Flow, conductivity and head Your answer

**03:**Head, turbidity and velocity

**Q:**Select the three parameters of most interest in water pumping systems:

**A:**Head, turbidity and velocity

**01:**Flow, head and energy

**02:**Flow, conductivity and head

**03:**Head, turbidity and velocity Your answer

**Q:**Which of the following parameters is not used for calculating pump efficiency?

**A:**Flow

**01:**Flow Your answer

**02:**Time

**03:**Pressure

**04:**Power Consumption

**Q:**Which of the following parameters is not used for calculating pump efficiency?

**A:**Time

**Q:**Which of the following parameters is not used for calculating pump efficiency?

**A:**Pressure

**01:**Flow

**02:**Time

**03:**Pressure Your answer

**04:**Power Consumption

**Q:**Which of the following parameters is not used for calculating pump efficiency?

**A:**Power Consumption

**01:**Flow

**02:**Time

**03:**Pressure

**04:**Power Consumption Your answer

**Q:**What causes cavitation?

**A:**Cavitation occurs when water changes its state from vapour to water at low pressure.

**Q:**What causes cavitation?

**A:**Cavitation occurs when water boils at 100°C and changes its state from water to vapour at normal atmospheric pressure.

**01:**Cavitation occurs when water changes its state from vapour to water at low pressure.

**02:**Cavitation occurs when water boils at 100°C and changes its state from water to vapour at normal atmospheric pressure. Your answer

**03:**Cavitation occurs when water flows through a pipe and a valve is closed quickly at a low atmospheric pressure

**Q:**What causes cavitation?

**A:**Cavitation occurs when water flows through a pipe and a valve is closed quickly at a low atmospheric pressure

**01:**Cavitation occurs when water changes its state from vapour to water at low pressure.

**02:**Cavitation occurs when water boils at 100°C and changes its state from water to vapour at normal atmospheric pressure.

**03:**Cavitation occurs when water flows through a pipe and a valve is closed quickly at a low atmospheric pressure Your answer

**Q:**What are the effects of cavitation on pumps?

**A:**Breakage of rotor

**01:**Breakage of rotor Your answer

**02:**Pitting of suction pipe

**03:**Pitting of impeller and pump housing

**Q:**What are the effects of cavitation on pumps?

**A:**Pitting of suction pipe

**01:**Breakage of rotor

**02:**Pitting of suction pipe Your answer

**03:**Pitting of impeller and pump housing

**Q:**What are the effects of cavitation on pumps?

**A:**Pitting of impeller and pump housing

**Q:**How is the relationship between these three factors described in an equation?

**A:**P = Q x H x c

**Q:**How is the relationship between these three factors described in an equation?

**A:**Q = H x P x c

**01:**P = Q x H x c

**02:**Q = H x P x c Your answer

**03:**P = Q/H x c

**Q:**How is the relationship between these three factors described in an equation?

**A:**P = Q/H x c

**01:**P = Q x H x c

**02:**Q = H x P x c

**03:**P = Q/H x c Your answer

**Q:**How can friction loss in a system be minimised?

**A:**By increasing the pipe diameter

**Q:**How can friction loss in a system be minimised?

**A:**By using 2 smaller pumps instead of one bigger pump

**01:**By increasing the pipe diameter

**02:**By using 2 smaller pumps instead of one bigger pump Your answer

**03:**By adding a Tee to the piping system

**Q:**How can friction loss in a system be minimised?

**A:**By adding a Tee to the piping system

**01:**By increasing the pipe diameter

**02:**By using 2 smaller pumps instead of one bigger pump

**03:**By adding a Tee to the piping system Your answer