🔍 Key Concepts

• Electric motor overloading and what happens to winding temperature during sustained overload • Purpose of thermal overload relays and why tampering with protection devices is dangerous • Safe ways to increase cooling of an overloaded motor without modifying its internal construction

💭 Think About

• Which option focuses on safely removing excess heat from the motor rather than changing how it is built or defeating safety systems? • In an emergency, would a licensed engineer be allowed to bypass protective devices such as thermal overload relays, or should they keep all protection in service? • Which choice describes a method that could realistically be done on board, is non-destructive, and aligns with standard engineering practice for overloaded equipment?

✅ Before You Answer

• Eliminate any answer that involves bypassing or blocking protective devices like overload relays • Eliminate options that require changing the internal design or materials of the motor in ways that are not practical during an emergency • Focus on the choice that improves cooling and ventilation using ordinary, safe shipboard equipment