railway RRB JE (CBT I + CBT II) Mock Test 2024 Power Systems Transmission and Distribution Overhead Insulators
Maximum string efficiency is achieved when
1
Uniform distribution of voltage across SCRs in a string appears
2
Uneven voltage distribution of voltages across SCRs in a string appears
3
One of the SCRs shares maximum voltage and rest share same voltage in a string
4
Derating factor = 1-string efficiency