When the field of a synchronous motor is under-excited, the power factor will be

Related MCQs

• 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 the field of a synchronous motor is underexcited, the power factor will be
• 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
• If in a synchronous motor, driving a given mechanical load and drawing current at a leading power factor from constant voltage supply its field excitation is increased, its power factor
• 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
• When a 3-phase synchronous generator is supplying a zero power factor lagging load, the armature field affects the main field in the following way
• A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because
• The power factor of a synchronous motor is better than that of induction motor because
• While starting a synchronous motor by induction motor action, field winding is usually
• If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will