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CD0030. Marine Lubricants

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About this collection

The Seagull CBT bank is organised into modules covering safety, shipboard operations, maintenance and other topics. Original module names and codes are retained to help you find the topic you need.

“Seagull CBT — CD0030. Marine Lubricants” contains 35 questions across 1 collection.

Learning

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Exam

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Sample questions and answers

These examples come from the published collection. Choose Learning to study questions in sequence, or Exam to check your knowledge.

Friction modifiers or "oiliness additives" will:

One correct answer

  • improve the viscosity index
  • reduce friction under boundary conditions✓ Correct answer
  • increase the pour point
  • extend lubricating oil life time
What is a typical BN level for a two stroke engine cylinder oil?

One correct answer

  • BN 70 - BN 100✓ Correct answer
  • BN 10 - BN 20
  • BN 50 - BN 70
  • BN 5 - BN 10
This is an example of ........................

One correct answer

  • Elastohydrodynamic lubrication✓ Correct answer
  • Hydrodynamic lubrication
  • Boundary Lubrication
  • Extreme pressure lubrication
The refined lubricant base oil properties are greatly influenced by:

One correct answer

  • storage and treatment
  • refining process
  • chemical treatment
  • crude oil composition or origin✓ Correct answer
Name the properties that are exhibited by Aromatic hydrocarbons?

One correct answer

  • Poor chemical stability✓ Correct answer
  • high viscosity indices
  • high pour points

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No. This is independent practice. A result does not replace an examination, certificate or knowledge check by an authorised organisation.