Meo Class 4 Electrical — Oral Questions And Answers

To safeguard essential machinery (like steering gear) by automatically disconnecting non-essential services (like AC or galley power) during a partial overload.

These questions cover the fundamental operation and maintenance of major shipboard machinery.

What are the three conditions and methods for paralleling? Conditions: Frequency, Phase, and Voltage must match. Meo Class 4 Electrical Oral Questions And Answers

Accept the alarm and isolate breakers one by one to locate the source. Common causes include damaged conductor insulation, dampness, or accumulated dirt. What tasks are performed?

Steering gear is unique because it must have a short-circuit trip but only an overload alarm (typically at 150%) rather than a trip, to ensure it doesn't stop suddenly during critical maneuvering. To safeguard essential machinery (like steering gear) by

Verify connections, check if the breaker has tripped (reset if so), ensure supply from the Main Switchboard (MSB), and check for single-phasing.

Ensure the coupling isn't misaligned and the pump isn't obstructed. Earth Fault Alarms: What is your immediate action? Conditions: Frequency, Phase, and Voltage must match

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