The mechanical displacement of the rotor with respect to the stator, in polyphase multipolar synchronous motors running at full load, is of the order of

Related MCQs

• In which of the following motors the stator and rotor magnetic field rotate at the same speed ?
• In which of the following motors the stator and rotor fields rotate simultaneously ?
• When the stator windings are connected in such a fashion that the number of poles are made half, the speed of the rotor of a synchronous motor
• The maximum torque which a synchronous motor will develop at rest for any angular position of the rotor, at rated stator supply voltage and frequency, is known as
• The standard full-load power factor ratings for synchronous motors are
• A synchronous motor is running on a load with normal excitation. Now if the load on the motor is increased
• When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop
• 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
• If load (or torque) angle of a 4-pole synchronous motor is 6° electrical, its value in mechanical degrees is
• If in a synchronous motor, driving mechanical load and drawing current at lagging power factor from constant voltage supply, its field excitation is increased, then its power factor