CHIEF ENGINEER Unit 14 Q2

Correct Answer:
C) Sediment test

Explanation:
A sediment test measures the level of particles and sludge in the oil, which indicates contamination and the need for oil replacement.

Correct Answer:
B) Total Acid Number (TAN)

Explanation:
The TAN test measures the acidity in oil, helping identify oil degradation or contamination, which can lead to corrosion if not addressed.

Correct Answer:
B) Using an accelerometer mounted on machinery components

Explanation:
Accelerometers are used to measure vibration levels on rotating parts, providing data for analyzing machinery health.

Correct Answer:
A) Structural failure due to fatigue

Explanation:
By identifying imbalances and misalignment, vibration analysis can prevent fatigue-related structural failures, which are common in rotating machinery under stress.

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

Explanation:
Vibration analysis helps identify issues such as misalignment, imbalance, and bearing wear, which can be addressed early to prevent major failures.

Correct Answer:
B) Rotating shaft

Explanation:
Vibration analysis is commonly applied to rotating parts, such as shafts, to detect imbalances and misalignment, which are primary indicators of potential issues.

Correct Answer:
C) Bearing wear and misalignment

Explanation:
Vibration analysis is particularly effective in detecting faults in rotating machinery, such as bearing wear and misalignment, which produce specific vibration patterns.

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

Explanation:
A viscosity test determines the thickness and flow characteristics of the oil, which are essential for proper lubrication at different temperatures.

Correct Answer:
C) Possible cooling water leakage into the system

Explanation:
High water content in the oil is a sign of water contamination, often due to a leak in the cooling system, which can reduce lubrication efficiency.

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

Explanation:
Early fault detection through vibration analysis enables maintenance before a major breakdown, improving reliability and reducing unexpected downtime.

Correct Answer:
B) To ensure the machinery operates within vibration tolerance limits

Explanation:
Maintaining vibration within specific tolerance levels helps prevent damage and extends machinery life, making it an essential part of condition monitoring.