An under excited synchronous motor operates at – McqOptions

MCQOPTIONS

1.	An under excited synchronous motor operates at
A.	lagging PF
B.	unity PF
C.	leading PF
D.	lagging PF at low loads and leading PF at high loads
Answer» B. unity PF

Discussion

No Comment Found

Related MCQs

When the excitation of an unloaded salient pole synchronous motor suddenly gets disconnected
A synchronous motor is running on a load with normal excitation. Now if the load on the motor is increased
The power developed by a synchronous motor will be maximum when the load angle is
When V is the applied voltage, then the breakdown torque of a synchronous motor varies as
The maximum value of torque that a synchronous motor can develop without losing its synchronism, is known as
Which of the following losses is not dissipated by the stator core surface in a synchronous motor ?
If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will
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 coupling angle or load angle of synchronous motor is defined as the angle between the
A synchronous motor which works on a leading power factor and does not drive a mechanical load is called as