Which DC motor is a mix of series and shunt windings?

Which DC motor is a mix of series and shunt windings?

• A. Compound DC Motor
• B. Series DC Motor
• C. Shunt DC Motor
• D. Synchronous Motor

Answer: (A)

A DC motor that combines both a series wound field and a shunt wound field is called a compound motor. In this arrangement, the shunt field is connected across the supply while the series field is in series with the armature. The two fields work together to produce a magnetic flux that enhances starting torque (from the series winding) while also improving speed regulation under load (from the shunt winding). There are variations where the two fields either aid or oppose each other, but the defining idea is having both windings active to blend the benefits of series and shunt configurations. The other options don’t mix winding types: a series motor uses only a series field, a shunt motor uses only a shunt field, and a synchronous motor is an AC machine, not a DC motor.

A DC motor that combines both a series wound field and a shunt wound field is called a compound motor. In this arrangement, the shunt field is connected across the supply while the series field is in series with the armature. The two fields work together to produce a magnetic flux that enhances starting torque (from the series winding) while also improving speed regulation under load (from the shunt winding). There are variations where the two fields either aid or oppose each other, but the defining idea is having both windings active to blend the benefits of series and shunt configurations. The other options don’t mix winding types: a series motor uses only a series field, a shunt motor uses only a shunt field, and a synchronous motor is an AC machine, not a DC motor.