Question

The electrolytic capacitor used in a capacitor start motor is a short duty type and guaranteed for operations per hour.

• A. 10
• B. 15
• C. 20
• D. 25

Hint:

Short duty electrolytic capacitors in capacitor start motors are rated for limited start operations (usually around 20 per hour) to avoid damage.

Answer 1

The Correct Option is C

In capacitor start motors, the electrolytic capacitor is designed to provide a high starting torque by creating a phase shift between the currents in the main and auxiliary windings. However, these capacitors are of short duty type, meaning they are intended only for brief use during starting. They are typically rated for about 20 operations per hour to prevent overheating and degradation. Exceeding this can lead to capacitor failure and reduced motor life.