Question
Download Solution PDFWhich principle is used to find the direction of rotation of a conductor in a DC motor?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe direction of rotation of the DC motor conductor can be determined by Fleming's left-hand rule.
Fleming's left-hand rule:
- This method is used to find the direction of the force on the conductor put in a magnetic field when the direction of the magnetic field and current is known.
- According to this rule, if we arrange our thumb, forefinger, and middle finger of the left-hand perpendicular to each other then the thumb points towards the direction of the magnetic force, the forefinger points toward the direction of the magnetic field, and the middle finger points towards the direction of the current.
Additional Information
- Fleming's right-hand rule is used in DC generators to determine the direction of induced current in the conductors.
- Lenz's law determines the direction of induced emf in the transformers.
- Faraday's law is used to determine the magnitude of induced emf in the transformers.
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