MEK Exit Exam • Set 2 Question 14 of 30

What type of pump is self-priming and commonly used for positive displacement lube oil transfer?

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Direct Answer

Option C: Gear Pump or Screw Pump

Positive displacement pumps, specifically internal gear and screw pumps, utilize meshing rotating elements to create expanding suction cavities. They are inherently self-priming and excel at transferring viscous fluids like lubricating oil against high system backpressures.

All Options

A

Centrifugal Pump

B

Ejector Pump

C

Gear Pump or Screw Pump (Correct Answer)

D

Axial Flow Pump

Detailed Explanation & Context

Positive displacement pumps, specifically internal gear and screw pumps, utilize meshing rotating elements to create expanding suction cavities. They are inherently self-priming and excel at transferring viscous fluids like lubricating oil against high system backpressures.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).

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