engineering recuitment JKSSB Draftsman (Civil) Mock Test 2023 Electrician and Wireman Electrical Wiring
Which is the polarity of direct current (DC)?
1
Phase (L) and Neutral (N)
2
Phase (L) and Negative (−ve)
3
Positive (+ve) and Neutral (N)
4
Positive (+ve) and negative (−ve)