engineering recuitment CSPTCL JE Electrical Mock Test 2023 Electrical Machines Alternator and Synchronous Motors Damper Windings
Damper bars in case of Salient Pole Rotors of hydro-alternators are usually inserted in pole faces to
1
Strengthen the excitation current of the poles
2
Damp out the rotor oscillations during transient state owing to sudden change in load conditions
3
Help improve the power factor of load
4
Reduce the no-load current when load is thrown-off