Journeyman lineman Exam Complete Questions And Correct Detailed Answers (Verified Answers) |Already Graded A+||Brand New Version!!

Journeyman lineman Exam Complete Questions And Correct Detailed Answers (Verified Answers) |Already Graded A+||Brand New Version!! What fahrenheit temperature would a transformer have to be 55% centigrade above ambrient of 98* F? - Answer- 55x1.8=99 + 32 = 131*F 131 + 98= 229* A conductor is pulled to what tension? - Answer- 50% To dead end three 2/0 HD conductors which have a breaking strength of 5,927 lbs each A. How many B. What size C. What lead should the down guys have? - Answer- A. 2 B. 3/8" steel C. 1-1 leads Pole steps should be spaced what distance apart? - Answer- 18" At what angle does a lifting sling have the same weight stress as the load being lifted? - Answer- 30* At what angle is the weight stress reduced approximately 1/2 of the load being lifted? - Answer- 60* How do you tell how much pull will be needed to lift a known weight with a double to double block and tackle? - Answer- Divide the weight by the number of running lines over moveable sheaves. 1000/4=250 or 25% per line. Can transformers of different polarity be parallel? How do you test polarity? - Answer- Yes H1. H2 / VM X1. X2 Make drawings of 3 single phase transformers connected delta wye. - Answer- Draw If a guy lead has a ratio of 1 to 1 on a 50 ft pole, what is the guy lead distance? - Answer- 50 ft A. Define load factor. B. Define KVA C. Define KW - Answer- A. Ratio of average load to peak load B. Apparant power Amps x volts/1000 C. True power Amps x volts xPF/1000 Should a foreman be a boss or a leader? If you don't understand a job, should it be discussed with the crew members? - Answer- Leader Yes/ a foreman How much safety factor should you consider in deciding what chains or rope to handle a certain load? - Answer- 2 to 1 when new 4 to 1 six months or older Which is the primary winding of a transformer? Why are current transformers (CT) used? - Answer- The source side To reduce the current to a safe level for metering purposes. A 10 KVA transformer is rated 7200 volts primary and 120 volts secondary. What is full load current? - 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? - Answer- Voltage, current, and resistance 746 watts When paralleling two transformers, what should be checked to be sure of satisfactory results? - Answer- Polarity, impedance, and voltage