What is the starting characteristic...

🔍 Key Concepts

• Across-the-line (direct-on-line) starting and what it means for how the motor is connected to the supply • Relationship between starting current and starting torque in induction motors • How reduced-voltage or soft starters differ from across-the-line starters in terms of current, torque, and acceleration

💭 Think About

• When a motor is started across-the-line, is the full line voltage applied immediately or gradually? What does that do to current and torque? • Which options describe features that are usually associated with reduced-voltage or soft starting methods rather than direct-on-line starting? • Think about which choice is a natural consequence of applying full voltage suddenly to a motor at standstill.

✅ Before You Answer

• Confirm whether across-the-line starting applies full line voltage at the instant of start • Recall that high current at starting in an induction motor is typically several times the full-load current • Distinguish between features that sound like control/regulation (usually added equipment) versus the inherent characteristic of a simple across-the-line starter

What is the starting characteristic associated with across-the-line starters as used with AC motors?

reduced starting current

regulated starting current

high starting torque

controlled starting acceleration

🔍 Key Concepts

💭 Think About

✅ Before You Answer