Question
Download Solution PDFThe torque developed by a 3-phase induction motor least depends on which the following options?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFTorque Development in a 3-Phase Induction Motor:
The torque developed by a 3-phase induction motor depends on several factors related to the rotor and stator. The key factors influencing the torque are:
- Rotor EMF: The induced electromotive force in the rotor windings.
- Rotor Current: The current flowing through the rotor windings.
- Rotor Power Factor: The phase angle between the rotor current and the rotor EMF.
These factors are crucial in determining the electromagnetic torque generated by the motor. The electromagnetic torque (T) can be expressed as:
T ∝ (Er Ir cos(ϕr))
Where:
- Er = Rotor EMF
- Ir = Rotor current
- cos(ϕr) = Rotor power factor
The shaft diameter primarily affects the mechanical strength and the ability of the motor to handle mechanical loads, but it does not directly influence the electromagnetic torque developed by the motor.
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