Question 1 of 8
Basic

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

Question 2 of 8
Basic

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

Question 3 of 8
Basic

What are the effects of cavitation on pumps?

Question 4 of 8
Basic

Identify the correct formula for calculating pump efficiency.

Question 5 of 8
Basic

Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:

Question 6 of 8
Basic

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

Question 7 of 8
Basic

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

Question 8 of 8
Basic

What causes cavitation?

Question 8 of 8
Basic

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1: Identify the reasons for reduction in pump performance from the given options:
Bad power supply
1: Identify the reasons for reduction in pump performance from the given options:
Reduction in size of irrigation zone
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1: Identify the reasons for reduction in pump performance from the given options:
Changes in energy requirements
You can find the answer here >
2: How is the relationship between these three factors described in an equation?
P = Q x H x c
2: How is the relationship between these three factors described in an equation?
2: How is the relationship between these three factors described in an equation?
3: What are the effects of cavitation on pumps?
3: What are the effects of cavitation on pumps?
Pitting of suction pipe
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3: What are the effects of cavitation on pumps?
Pitting of impeller and pump housing
4: Identify the correct formula for calculating pump efficiency.
4: Identify the correct formula for calculating pump efficiency.
(p x H × Q)/(c × P1)
4: Identify the correct formula for calculating pump efficiency.
5: Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
Temperature sensors
5: Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
5: Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
6: Which of the following parameters is not used for calculating pump efficiency?
6: Which of the following parameters is not used for calculating pump efficiency?
Time
6: Which of the following parameters is not used for calculating pump efficiency?
6: Which of the following parameters is not used for calculating pump efficiency?
7: Friction loss is dependent on the [xxxxxxxx] of the fluid.
7: Friction loss is dependent on the [xxxxxxxx] of the fluid.
Velocity
7: Friction loss is dependent on the [xxxxxxxx] of the fluid.
8: What causes cavitation?
Cavitation occurs when water changes its state from vapour to water at low pressure.
8: What causes cavitation?
Cavitation occurs when water boils at 100°C and changes its state from water to vapour at normal atmospheric pressure.
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8: What causes cavitation?
Cavitation occurs when water flows through a pipe and a valve is closed quickly at a low atmospheric pressure
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