When operating with a negative suction head,...

Question 1 / 270705eccef9bbacbc34ba4d4554e

Question 1 of 270705eccef9bbacbc34ba4d4554e

When operating with a negative suction head, which of the following types of pumps will require priming?

Back

Question 1 of 27070

Q

When operating with a negative suction head, which of the following types of pumps will require priming?

🔍 Key Concepts

• Negative suction head (pump located above the liquid level) and what that means for air in the suction line • Self-priming vs. non-self-priming pump types • How different pump types (reciprocating, centrifugal, rotary, gear) handle air vs. liquid

💭 Think About

• Think about which pump type depends on being completely filled with liquid to create flow and pressure • Consider which pumps can lift liquid even when some air is present in the suction line • Ask yourself: which design will just "spin" or move air without drawing liquid until it is full of liquid first?

✅ Before You Answer

• Confirm which pump types are generally considered self-priming • Identify which pump type quickly loses efficiency when air enters the suction and cannot displace it • Verify which pump type is commonly used for bilge and ballast systems where suction lift and priming are key concerns

Question 1 of 27070

Q

When operating with a negative suction head, which of the following types of pumps will require priming?

A

Reciprocating

B

Centrifugal

C

Rotary

D

Gear

Question 1 / 270705eccef9bbacbc34ba4d4554e

Question 1 of 270705eccef9bbacbc34ba4d4554e

When operating with a negative suction head, which of the following types of pumps will require priming?

Back

Question 1 of 27070

Q

When operating with a negative suction head, which of the following types of pumps will require priming?

🔍 Key Concepts

• Negative suction head (pump located above the liquid level) and what that means for air in the suction line • Self-priming vs. non-self-priming pump types • How different pump types (reciprocating, centrifugal, rotary, gear) handle air vs. liquid

💭 Think About

• Think about which pump type depends on being completely filled with liquid to create flow and pressure • Consider which pumps can lift liquid even when some air is present in the suction line • Ask yourself: which design will just "spin" or move air without drawing liquid until it is full of liquid first?

✅ Before You Answer

• Confirm which pump types are generally considered self-priming • Identify which pump type quickly loses efficiency when air enters the suction and cannot displace it • Verify which pump type is commonly used for bilge and ballast systems where suction lift and priming are key concerns