Question
Download Solution PDFWhich of the following statements about equivalent circuit with core losses of single-phase motor is/are true?
1. The current drawn by the induction motor when it is not coupled to the driven equipment is called no load current of the motor.
2. The no load current produces the magnetic field in the motor.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFSingle-phase induction motor
The equivalent circuit of a single-phase motor is given below:
No-load current of induction motor:
- The no-load current is the current the motor draws when running without any mechanical load attached. It includes the magnetizing current (which produces the magnetic field) and the current needed to overcome core losses, friction, and windage losses.
- No-load current comprises two parts: the magnetizing component and loss components, such as hysteresis and eddy current loss.
- The no-load current, particularly its magnetizing component, is responsible for producing the magnetic field in the motor, which is necessary for its operation. This magnetic field is essential for inducing torque when the motor is loaded.
So, both statements correctly describe key aspects of the motor's equivalent circuit and no-load operation.
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