CHIEF ENGINEER Unit 14 Q2

1 / 11

What does a viscosity test on crankcase oil primarily reveal?

B) The presence of fuel contamination

A) The oil’s acidity

D) The presence of water

C) The oil’s ability to maintain lubrication under varying temperatures

2 / 11

Which of the following faults can vibration analysis most effectively detect?

D) Rust formation

A) Fuel contamination

B) Electrical overload

C) Bearing wear and misalignment

3 / 11

Which of the following tests helps assess contamination in crankcase oil by measuring particles and sludge?

D) Flashpoint test

A) Viscosity test

C) Sediment test

B) Water content test

4 / 11

How is vibration analysis data typically collected for condition monitoring?

C) By measuring fuel pressure

D) By visual inspection

A) Using a thermometer

B) Using an accelerometer mounted on machinery components

5 / 11

What is a significant advantage of using vibration analysis in planned maintenance?

B) It allows for early detection of faults, reducing unplanned downtime

C) It increases the operating temperature of machinery

D) It ensures continuous power supply

A) It eliminates the need for any repairs

6 / 11

Which test can detect acidic compounds in crankcase oil that indicate oil degradation?

B) Total Acid Number (TAN)

D) Flashpoint test

A) Total Base Number (TBN)

C) Viscosity test

7 / 11

What is the primary reason vibration analysis is included in a condition monitoring program?

D) To reduce oil consumption

A) To visually inspect wear on components

C) To replace components more frequently

B) To ensure the machinery operates within vibration tolerance limits

8 / 11

How does vibration analysis contribute to a planned maintenance system for machinery?

A) By directly improving fuel efficiency

B) By detecting early signs of wear or imbalance in rotating components

C) By measuring the temperature of the engine components

D) By monitoring fuel levels in the system

9 / 11

Which component of machinery is most likely monitored by vibration analysis for early signs of failure?

A) Oil filter

B) Rotating shaft

C) Air intake manifold

D) Cylinder liner

10 / 11

If a crankcase oil test shows high water content, what might this indicate?

A) Fuel contamination

C) Possible cooling water leakage into the system

D) Increased oil viscosity

B) Overheating in the crankcase

11 / 11

Vibration analysis as a maintenance tool can help prevent which of the following types of failure?

D) Rust formation

B) Fuel leakage

A) Structural failure due to fatigue

C) Incorrect valve timing

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