For power factor correction, synchronous motors operate at

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
• The standard full-load power factor ratings for synchronous motors are
• 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
• Synchronous motors are generally not self-starting because
• Mostly, synchronous motors are of
• Synchronous motors are
• 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
• A synchronous motor can operate at
• A synchronous motor can develop synchronous torque