Question:
In the V-curve of a Synchronous motor, the minimum point of the curve corresponds to
In the V-curve of a Synchronous motor, the minimum point of the curve corresponds to
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In a synchronous motor V-curve, minimum armature current occurs at unity power factor.
Updated On: May 27, 2026
- Lagging power factor
- Unity power factor
- Minimum speed
- Leading power factor
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The Correct Option is B
Solution and Explanation
Concept:
The V-curve of a synchronous motor shows the relation between armature current and field current.
Step 1: At low excitation, the motor operates at lagging power factor.
Step 2: At over-excitation, the motor operates at leading power factor.
Step 3: At a particular field current, armature current becomes minimum.
Step 4: Minimum armature current occurs when the power factor is unity. Therefore, the minimum point of the V-curve corresponds to: \[ \boxed{\text{Unity power factor}} \]
Step 1: At low excitation, the motor operates at lagging power factor.
Step 2: At over-excitation, the motor operates at leading power factor.
Step 3: At a particular field current, armature current becomes minimum.
Step 4: Minimum armature current occurs when the power factor is unity. Therefore, the minimum point of the V-curve corresponds to: \[ \boxed{\text{Unity power factor}} \]
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