Question:
A Synchronous motor used specifically for power factor correction (running at no load and over excited) is called a
A Synchronous motor used specifically for power factor correction (running at no load and over excited) is called a
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A synchronous condenser is an over-excited synchronous motor used for power factor correction.
Updated On: May 27, 2026
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The Correct Option is B
Solution and Explanation
Concept:
An over-excited synchronous motor running without mechanical load is used for power factor improvement.
Step 1: A synchronous motor can operate at lagging, unity, or leading power factor depending on excitation.
Step 2: When the motor is over-excited, it draws leading current.
Step 3: A leading current can compensate the lagging current of inductive loads.
Step 4: A synchronous motor used only for power factor correction is called a synchronous condenser. Therefore: \[ \boxed{\text{Synchronous condenser}} \]
Step 1: A synchronous motor can operate at lagging, unity, or leading power factor depending on excitation.
Step 2: When the motor is over-excited, it draws leading current.
Step 3: A leading current can compensate the lagging current of inductive loads.
Step 4: A synchronous motor used only for power factor correction is called a synchronous condenser. Therefore: \[ \boxed{\text{Synchronous condenser}} \]
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