railway UPMRC SCTO 2024 Mock Test Electrical Machines Alternator and Synchronous Motors Salient Pole Alternator Operation
In a synchronous machine, the ratio of the field current required to produce rated voltage on an-open circuit to the field current required to produce rated armature current with the armature terminals shorted while the machine is mechanically run at synchronous speed is termed as:
1
Short circuit ratio
2
synchronous resistance
3
synchronous impedance
4
synchronous reactance