Capacitors are always connected _______ with the start winding?

Capacitors are always connected _______ with the start winding?

• A. In series
• B. In parallel
• C. Across supply
• D. Across run winding

Answer: (A)

Capacitance creates the necessary phase shift to start a single‑phase motor. Placing the capacitor in series with the start winding makes the current in that winding out of phase with the run winding’s current, producing a rotating magnetic field that gets the rotor turning. The run winding stays connected directly across the supply, while the start winding (in series with the capacitor) is connected in parallel with it and is then disconnected once the motor reaches speed by a centrifugal switch. So the capacitor must be in series with the start winding to generate the starting torque.

Capacitance creates the necessary phase shift to start a single‑phase motor. Placing the capacitor in series with the start winding makes the current in that winding out of phase with the run winding’s current, producing a rotating magnetic field that gets the rotor turning. The run winding stays connected directly across the supply, while the start winding (in series with the capacitor) is connected in parallel with it and is then disconnected once the motor reaches speed by a centrifugal switch. So the capacitor must be in series with the start winding to generate the starting torque.