Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← TechnologyWhich outcome occurs when single phasing in a three-phase motor due to an open circuit?
A)Increased winding current and overheating✓
B)Balanced torque and stable rotation
C)Reduced overall harmonic distortion
D)Improved motor power factor and efficiency
💡 Explanation
Increased winding current happens in single phasing due to the negative sequence impedance. The **negative sequence impedance** causes uneven current distribution; because the motor attempts to maintain power, this drives up the current through the remaining phases; therefore, overheating, rather than balanced torque as in normal operation.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Technology →- Which risk increases when a hydraulic actuator on an aircraft landing gear experiences rapid, repeated cycling?
- Which consequence results when hot-carrier injection degrades a MOSFET’s threshold voltage?
- Which risk increases when a helicopter's rotor blades experience retreating blade stall?
- Which outcome occurs when excessive backlash distorts an encoder's square wave signal in a CNC milling machine?
- Which outcome occurs when a screw pump handling viscous polymer experiences excessive shear rates?
- Which risk increases when transformer oil containment systems lack sufficient capacity during a rupture?
