What are the different between universal motor and series motor?

Question

Accepted Answer

Universal motors are used for AC and DC power while series motors are used for DC power only.

Universal motors have a high starting torque and can operate at high speeds, making them suitable for appliances like vacuum cleaners and power tools.
Series motors have a high starting torque and can operate at low speeds, making them suitable for applications like electric trains and cranes.
Universal motors have brushes that wear out quickly due to the high speeds and frequent use, while series motors have brushes that last longer due to the lower speeds and less frequent use.
Universal motors are less efficient than series motors due to the energy losses from the AC power supply, while series motors are more efficient due to the direct DC power supply.

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