JOURNEYMAN LINEMAN EXAM AND PRACTICE EXAM | NEWEST ACTUAL EXAM COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS GRADED A+ | 100% PASS | 205 UPDATE!

JOURNEYMAN LINEMAN EXAM AND PRACTICE EXAM | NEWEST ACTUAL EXAM COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS GRADED A+ | 100% PASS | 205 UPDATE! A 10 KVA transformer is rated 7200 volts primary and 120 volts secondary. What is full load current? - Correct Answer 10,000/120=83.3 primary 7200/120= 6 60 to 1 ratio 83.3/60= 1.38 secondary What qualities are involved in OHM's Law? What is electrical horsepower? - Correct Answer Voltage, current, and resistance 746 wattsPole steps should be spaced what distance apart? - Correct Answer 18" At what angle does a lifting sling have the same weight stress as the load being lifted? - Correct Answer 30* When paralleling two transformers, what should be checked to be sure of satisfactory results? - Correct Answer Polarity, impedance, and voltage A three phase transformer voltage is 66000/12470Y. Full load on high side is 13.1 amps. What are the amps on secondary? What is the KVA capacity? - Correct Answer 66000/12470=5.29 5.29x13.1=69.29 or 69.3amps secondary 12470x69.3x1.732 -------------------1000 =14.967 Or 15KVA capacity Why are relays used on OCB controls? - Correct Answer To sense overcurrent and trip OCB's High side fuses are ordinarily from 200 to 300% of full load current of transformers, if short circuit capacity will permit. What size fuse will be needed for a 66 KV, 1500KVA at 300% - Correct Answer 66000/1.732=38106 1500/3=500 KVA