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In case one phase of a three-phase synchronous motor is short-circuited the motor will?
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In case one phase of a three-phase synchronous motor is short-circuited the motor will
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List different starting methods of three phase synchronous motor. Explain any one of them.
Three phase synchronous motor will have how many sliprings?
If the capacitor of a single-phase motor is short-circuited?
An unexcited single phase synchronous motor is ?
If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will?
In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will?
The duration of sudden short-circuit test on a synchronous motor is usually about?
The efficiency of a properly designed synchronous motor will usually fall in range?
The maximum torque which a synchronous motor will develop at rest for any angular position of the rotor...
If the load of the normally excited synchronous motor is increased the power factor will?
If the field of synchronous motor is under excited, power factor will be?
The speed of a three-phase induction motor is controlled by variable voltage variable frequency control
The maximum constant load torque under which a synchronous motor will pull into synchronism...
The synchronous motor will develop maximum power when the load angle is?
Torque developed by a three-phase, 400V, induction motor is 100 N -m. If the applied voltage is reduced to
A 400 V, 50 Hz three-phase induction motor rotates at 1440 rpm on full -load. The motor is wound for
If we change the excitation of synchronous machine will it affect on motor speed?
The armature current on symmetrical 3 phase short circuit of a synchronous machine (salient pole)
what will happen when excitation of an unloaded salient pole synchronous motor suddenly gets disconnected?
A three-phase synchronous motor connected to ac mains is running at full load and unity power factor.
The size of a synchronous motor decreases with the increase in?
What is the maximum value of torque angle in synchronous motor?
In a synchronous motor, the armature current has large values for?
The damping winding in synchronous motor is generally used to?
The secondary of a current transformer is always short-circuited under operating conditions because it?
Slip-rings in a synchronous motor carry?
A synchronous motor running with normal excitation adjusts to load increases essentially by increase in?
In a synchronous motor which losses varies with load?
The operating speed of a synchronous motor can be changed to new fixed value by?
The construction of a synchronous motor resembles?
The coupling angle or load angle of synchronous motor is defined as the angle between the?
A synchronous motor has better power factor as compared to that of an equivalent induction motor...
If the synchronous motor, properly synchronised to the supply is running on no load and is having negligible loss then?
The synchronous motor which works on leading power factor and does not drive any mechanical load is called?
Hunting in synchronous motor cannot be due to?
The armature current of the synchronous motor?
How can we reverse the direction of rotation of synchronous motor?
The back emf of synchronous motor depends on?
List different types of stepper motor. State one application of stepper motor.
The synchronous speed of an 8 pole induction motor supplied power from a 50 Hz source will be ?
A synchronous motor can develop synchronous torque?
A synchronous motor can be made self starting by providing?
Why is a capacitor used in a single phase motor and not in three phase motor ?
Can we use the synchronous motor as the synchronous capacitor?
Which motor have more efficiency, synchronous motor or induction motor?
Synchronous motor always runs at which speed?
What is mean by plugging in three phase induction motor?
The slip of 400 V, three phase, 4 -pole induction motor when rotating at 1440 rpm is
How is a three phase cage induction motor self starting?
how can we reverse the direction of rotation of three phase induction motor?