Question 2879 Deck General

70% to pass

What does the term "head" mean when applied to a pump?

A Sum of discharge and suction pressures
B Length of its discharge pipe
C Difference between the discharge and suction pressures
D Height of its discharge pipe
AI Explanation

The correct answer is C) Difference between the discharge and suction pressures. The term "head" when applied to a pump refers to the difference in pressure between the pump's discharge and suction sides. This pressure difference represents the amount of energy the pump imparts to the fluid, which is used to overcome resistance and lift the fluid to a higher elevation or discharge it against a higher pressure. The other options are incorrect because: A) The sum of discharge and suction pressures does not accurately represent the pump's performance. B) The length of the discharge pipe is not a measure of the pump's head. D) The height of the discharge pipe is not a direct measure of the pump's head.

Related Questions
Q3616:The Muster List ("Station Bill") of a MODU must be signed by the ______________... Q1002:How should pinching of the cargo hose between the vessel and the dock be prevent... Q3125:Which log includes a statement of the conduct, ability, and character of each cr... Q658:The electrical components for each single crane are installed in its __________... Q3447:Your jack-up is being towed along a shipping channel. You are concerned that a ...

Ready to test your knowledge?

Take a Deck General Practice Exam
Official Resources
USCG Navigation Center USCG National Maritime Center Merchant Mariner Credentials
← Previous Question All Questions Next Question →

Pass Your Coast Guard Licensing Exams!

Study offline, track your progress, and simulate real exams with the Coast Guard Exams app

Download on App Store Get it on Google Play Download for Mac