Which of the following is NOT a way to reduce friction losses?
What happens if you double both the pump’s flow and the head?
What can you add to a pump to prevent it from dry-running?
Test results
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Q: Which of the following is NOT a way to reduce friction losses?
A: Reduce the flow
Q: Which of the following is NOT a way to reduce friction losses?
A: Lower the pump inlet
Q: Which of the following is NOT a way to reduce friction losses?
A: Increase the pipe size
Q: Does it create a noise inside the pump when vapourised water molecules implode?
A: No
Q: Does it create a noise inside the pump when vapourised water molecules implode?
A: Yes
Q: If a pump’s head is 20 metres, how high can the pump lift the water?
A: 10m
Q: If a pump’s head is 20 metres, how high can the pump lift the water?
A: 20m
Q: If a pump’s head is 20 metres, how high can the pump lift the water?
A: 30m
Q: What happens if you double both the pump’s flow and the head?
A: The energy usage remains the same
Q: What happens if you double both the pump’s flow and the head?
A: The energy usage is doubled
Q: What happens if you double both the pump’s flow and the head?
A: The energy usage is quadrupled
Q: What can you add to a pump to prevent it from dry-running?
A: A float switch
Q: What can you add to a pump to prevent it from dry-running?
A: A source of airflow
Q: What can you add to a pump to prevent it from dry-running?
A: Nothing, you can only use pumps with built-in dry-running protection
Q: What does friction loss refer to?
A: A rapid decrease of flow and increase of pressure
Q: What does friction loss refer to?
A: The formation of air bubbles in the moving liquid
Q: What does friction loss refer to?
A: Contact between the moving liquid and its enclosure