🔍 Key Concepts
• Nameplate data on AC motors usually focuses on information needed for installation, safe loading, and routine operation
• Difference between design/thermal limits (like insulation class, temp rise) and more detailed performance test data (like torque curves, slip, efficiency curves)
• What information an engineer or electrician needs to match a motor to supply voltage, load, and ambient conditions
💭 Think About
• Ask which option would be most important for safely determining how hot the motor can run in normal service without damage
• Consider which of these values is commonly standardized and printed for quick reference, versus performance details often found only in technical data sheets
• Think about what data a ship’s electrician would look at on the motor itself when checking if it’s suitable for the surrounding space and duty
✅ Before You Answer
• Verify which of the choices is directly related to heating limits of the winding under rated load
• Check which parameters are normally listed with voltage, current, power, frequency, and speed on a standard motor nameplate
• Eliminate any options that are usually found only in detailed performance curves or manufacturer catalogs, not on the physical plate on the motor housing