🔍 Key Concepts

• Full-voltage starting and what it means for the motor terminals • How reduced-voltage starters (like autotransformer or resistor types) limit current at start • Basic purpose of a VFD (Variable Frequency Drive) versus a traditional motor starter

💭 Think About

• Ask yourself: which option describes applying the supply directly to the motor leads with no intentional voltage reduction? • Which options are specifically designed to reduce inrush current and starting torque by lowering voltage or frequency? • Think about where you’ve seen each type used on board: which is the simplest, most common method used when high starting current is acceptable?

✅ Before You Answer

• Identify which choices are reduced-voltage starting methods • Clarify that a VFD changes frequency and often voltage to control speed, not just on/off starting • Confirm which option’s name literally implies a direct connection to full line voltage at start