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.

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Question 1 of 8 Basic

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

Question 2 of 8 Basic

What are the effects of cavitation on pumps?

Question 4 of 8 Basic

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

Question 6 of 8 Basic

Identify the reasons for reduction in pump performance from the given options:

Question 8 of 8 Basic

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

Question 8 of 8 Basic

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Correct
Q: How is the relationship between these three factors described in an equation?
A: P = Q x H x c
Correct
Q: What are the effects of cavitation on pumps?
A: Pitting of impeller and pump housing
Correct
Q: What causes cavitation?
A: Cavitation occurs when water changes its state from vapour to water at low pressure.
Correct
Q: Which of the following parameters is not used for calculating pump efficiency?
A: Time
Correct
Q: Identify the false statement.
A: Cavitation can occur when water is flowing in a pipe and a valve is closed too quickly.
Correct
Q: Identify the reasons for reduction in pump performance from the given options:
A: Bad power supply
Correct
Q: How can friction loss in a system be minimised?
A: By increasing the pipe diameter
Correct
Q: Select the three parameters of most interest in water pumping systems:
A: Flow, head and energy