Journeyman Lineman Test Questions With Correct Answers

Why does a recloser stay energized longer on the 3rd or 4th shot? {Ans: To allow a fuse to blow if there is a tree fault and also to narrow down the area of the fault after the fuse blows. The reason it holds open is to allow an sectionalizer to open cause it operates under no voltage.}OHM's law? {Ans: }How is the primary coil connected to the secondary coil? {Ans: magnetic coupling}What does a PT sense? {Ans: Voltage}How to find taps? {Ans: Divide Actual/desired. Example if actual is 120v, voltage desired 110v. 120/110 = 1.09 (109%)}3 ways to identify subtractive transformers? {Ans: 1. Primary voltage rating above 8,660v 2. Anything above 200kVA 3. Facing secondary bushings X1 directly below H1. (Subtractive=secondary coil is wrapped the opposite direction of primary.)}