# In the synchronous motor, the breakdown torque is

In the synchronous motor, the breakdown torque is

### Right Answer is: Directly proportional to applied voltage

#### SOLUTION

Breakdown torque is the maximum torque of the motor, which is produced at full rated voltage and frequency.

Power in the synchronous motor is given as

P = 2NT/60 V2

From the above equation, it is clear that torque T ∝ P.

The pull-out torque with excitation is supplied with a constant voltage source which varies directly with motor terminal voltage. Therefore as power varies as applied voltage V, the torque of a synchronous motor is also varies as applied voltage V.

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