While starting a salient pole synchronous motor by induction motor action and connecting field discharge resistance across field, starting and accelerting torque is produced by

Related MCQs

• If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will
• While starting a synchronous motor by induction motor action, field winding is usually
• In a 3-phase, 4-pole, 50 Hz synchronous motor, the frequency, pole number and load torque all are halved. The motor speed will be
• A synchronous motor installed at the receiving end substation operates with such an excitation that it takes power at lagging power factor. Now if the applied voltage of the synchronous motor goes down, the power factor of the synchronous motor will
• When the excitation of an unloaded salient pole synchronous motor suddenly gets disconnected
• The ratio of starting torque to running torque in a synchronous motor is
• If load (or torque) angle of a 4-pole synchronous motor is 6° electrical, its value in mechanical degrees is
• A synchronous motor can develop synchronous torque
• A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because
• An important advantage of a synchronous motor over wound round induction motor is that