Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← TechnologyWhich consequence results when PLC interrupt latency exceeds scan time?
A)Inaccurate quadrature encoder position updates✓
B)Reduced energy delivered to motor coils
C)Spurious activation of safety interlocks
D)Increased harmonic distortion in VFD output
💡 Explanation
Position control degrades because exceeding PLC scan time causes the missed encoder pulses via the interrupt's lost counts via process image update; therefore, the quadrature encoder position is inaccurately reported on next cycle, rather than smooth velocity as expected.
🏆 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 outcome occurs during insufficient guard interval duration in orthogonal frequency-division multiplexing?
- Which risk notably increases when rapid switching within a smart grid circuit attempts to mitigate voltage sags due to distributed renewable sources?
- Which unintended consequence occurs when using leading-edge vortex generators on aircraft wings at high angles of attack near stall?
- Which risk increases sharply when exceeding the Volt-Ampere (VA) rating of a backup power inverter circuit?
- Which outcome occurs when excessive harmonics distort voltage waveform in power circuits feeding sensitive medical equipment?
- Which consequence results when joint calibration is neglected in a SCARA robot?
