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Which of the following waveform is the waveform of the Rotating magnetic field (r.m.f) ├Шs produced in the stator?
Sine Wave
Cosine Wave
Trapezoidal Wave
Constant Magnitude
Constant Magnitude
The correct answer is D (Constant Magnitude), as the rotating magnetic field produced in the stator of an induction motor is characterized by a magnetic field that maintains a constant magnitude while rotating in space.
The correct answer is D (Constant Magnitude), as the rotating magnetic field produced in the stator of an induction motor is characterized by a magnetic field that maintains a constant magnitude while rotating in space.
╬жтИЭV/F тАФ Magnetic flux relationship to voltage and frequency.
The rotating magnetic field is generated by the three-phase stator windings energized with alternating currents that are phase-displaced by 120 degrees. This results in a magnetic field that rotates at synchronous speed, effectively maintaining a constant magnitude throughout its rotation.
The rotating magnetic field is a fundamental principle in the operation of induction motors.
It is produced by the stator windings which are connected to a three-phase supply.
Provides smooth and continuous torque.
Enables self-starting operation of induction motors.
Limited speed control compared to other motor types.
Requires a three-phase power supply for operation.
Industrial drives for pumps and fans.
HVAC systems for compressors.
A rotating magnetic field is essential for torque generation in induction motors.
Option A (Sine Wave) is incorrect because the magnetic field does not vary as a sine wave in magnitude; it maintains a constant level.
D is correct тАФ the rotating magnetic field maintains a constant magnitude during its operation.
Understanding the rotating magnetic field is crucial for both electrical machines and power systems subjects.