engineering recuitment UPPCL Technician Electrician 2022 Mock Test Power Systems Transmission and Distribution
Which of the following is the most commonly used power rating in large building (India)?
1
50 Hz, 230 V D.C.
2
60 Hz, three phase A.C.
3
50 Hz, three phase A.C
4
50 Hz, 230 V A.C.