Question 27Electricity & Electronics - QMED
70% to passWhat functionality does a low voltage protection circuit as used in electric motor starting equipment provide?
Aallow the motor to restart automatically on restoration of voltage without manually resetting
Btrip out the motor when the motor overspeeds due to low voltage
Cprevent the motor from restarting automatically on restoration of voltage
Dtrip out the motor when the motor develops a short circuit due to low voltage
AI Explanation
The correct answer is C) prevent the motor from restarting automatically on restoration of voltage. The low voltage protection circuit is designed to prevent the motor from restarting automatically when the voltage is restored after a low voltage condition. This is a safety feature to avoid unexpected or uncontrolled restarting of the motor, which could be hazardous. The other options are incorrect because they do not accurately describe the primary function of the low voltage protection circuit in electric motor starting equipment.
Related Questions
Q387:Of the following listed single-phase induction motors, which has the highest sta... Q386:As shown in figures "A", "B", "C", and "D" of the illustration, what is the usua... Q283:To minimize magnetic field interaction between electrical conductors in physical... Q319:Referring to figure "B" of the illustrated control circuit schematic diagram, wh... Q236:Capacitors are commonly used on DC power supply circuits for engine room automat...
Ready to test your knowledge?
Take a Electricity & Electronics - QMED Practice ExamOfficial Resources