Electrical Engineering XYZ MCQs
Which of the following motor is more expensive for same KW output rating:
- Induction motor
- Synchronous motor
- DC Shunt Motor
- AC single phase motor
Correct answer: 2. Synchronous motor
Explanation: Synchronous motors are typically more expensive than the other types listed (induction motor, DC shunt motor, AC single phase motor) for the same kW output. This is because synchronous motors require additional components and mechanisms, such as exciters and often complex control systems, to maintain precise speed control and power factor correction capabilities. These features add to the cost of manufacturing and implementation. In contrast, induction motors, widely used for their simplicity and robustness, are less expensive, while DC shunt motors and single-phase AC motors generally have simpler and less costly constructions for the same power output.