Lineman Apprentice Exam Answered 2026 New Update

Lineman Apprentice Exam Answered 2026 New Update If the diameter of the pole to be set is 10", the diameter of the hole should be ____ to allow sufficient room for tamping. - Answer- 16", 3" on each side of the pole What are the component parts of a distribution system? - Answer- Distribution Substation, feeder circuits, switches, protective equipment, primary circuits, distribution transformers, secondaries, services. The difference in a 3 wire & 4 wire distribution circuit is? - Answer- the Neutral wire What is the formula for power - Answer- P=VxI Transmission voltage is generally _________ to _________. - Answer- 138,000 to 765,000 volts An advantage of a Wye Primary system over a Delta primary system is? - Answer- Increased power carrying capacity, better voltage regulation The total flow of current from a generating plant may be as large as __________ amps. - Answer- 20,000 How many Amps does a 120 volt, 60 watt incandescent bulb draw? - Answer- .5 amps, P=IxE I=P/E 60/120=.5 Thury system was generators connected in ______ to transmit ________ amps at max voltage of _______ volts? - Answer- Series, 150 amps, 27,000 volts An aluminum wire must be ________ times as big as copper is a cross section to have the same conductivity. - Answer- 1.66 (this means that aluminum is only 2/3 as conductive as copper) Slices should not be installed ________ ft from a tie wire or armor rod. - Answer- 1 ft (12") Bolted connections may be used when? - Answer- If the wires to be connected are not under tension When splicing distribution wires, how far should the line be laid out straight before splicing? - Answer- 10 ft The head of a hydraulic operated tool weighs approximately ________ lbs. - Answer- 15 lbs (tools operate w/ a pressure of 10,000 psi) In the process of right of way clearing, trees and brush should receive a basil spray treatment not less than ___ weeks before cutting to prevent regrowth. - Answer- 2 weeks A light should be located from _____ to _____ ft over the surface of a road, less than 40' wide and from ______ to ______ ft on roads more than 40' wide. - Answer- 0-6 ft less than 40' 6-12 ft over 40' When splicing Transmission conductors/wires, how far out should a conductor be laid in each direction before splicing? - Answer- 40 ft from joining point During CPR, do chest compressions circulate the same amount of blood as the heart does normally? - Answer- Under best conditions, only 1/3 of normal flow is accomplished. A _____ ft mast arm is used in alleys, a ________ ft mast arm is used in residential areas w/ streets less than 40 ft wide, a _____ ft is used where streets are more than 40 ft wide and in industrial/ commercial areas? - Answer- 3 ft alleys 6 ft residential 40 ft 12 ft industrial 40 ft What does MOV stand for? - Answer- Metal Oxide Varistor DC Transmission was initiated in ______ during the year _______ - Answer- Germany, 1883 What device changes AC to DC? - Answer- Commutator (the process is called commutation) The Maximum use voltage for class 3 gloves is _______ volts - Answer- 26,500 volts The size of a crew needed to pike a 30 ft pole is _______, 35 ft _______, 40 ft _______, 45 and 50 ft _______ - Answer- 6 (30 ft), 7 (35 ft), 8 (40 ft), 10 (45 &50 ft) True or False- When applying a splice on wire, the wire should be straight for a distance of 10' - Answer- True Which 2 voltage types on Transmission lines require a corona shield? - Answer- Extra and Ultra High Voltage (shields are at each point of conductor support) A ground rod that penetrates perpetually moist earth will have a fairly ________ resistance. - Answer- Low XLPE=______ - Answer- Cross linked polyethylene EPR=_________ - Answer- Ethylene, Propylene, Rubber Current lags voltage in ______ devices, current leads voltage in ________ devices. - Answer- Inductive, capacitive True or False-Distribution transformers should be installed as close as possible to the center of the load that it's feeding. - Answer- True A swiss engineer named _____________ developed a high voltage DC transmission system in _____________. - Answer- Thury, 1899 True or False- The top of your climbers should be approximately 4 in below the inside prominence of the knee joint. - Answer- False (hooks are adjustable in 1/2 in increments 14-20 inches) ____________ designed and buried a transmission system using copper rods insulated with jute. - Answer- Thomas Edison Before lowering a victim to the ground, 2 rescue breathes should be given so that the throat tissue has less of a chance of swelling shut and the heart will be more likely to keep beating. - Answer- Yeah do that. An ___________ ______________ when used for service entrance protection and coordination, the electric fuses provide a buffer to prevent in-plant problems on the customer system from affecting service on the utility company system. - Answer- electronic fuse The location of protective devices such as PMR, are known as ______________. - Answer- Coordination points (these devices protect from over current) Before installing grounds on a conductor, it should first be __________. - Answer- Tested for voltage Hot line tools are factory tested at ___________ volts per foot - Answer- 100,000 The first electric lights were called electric arc lamps and the first place they were installed was ____________. - Answer- Paris, France The air we breathe has ______% oxygen. We use _____% and exhale _____%. - Answer- 21% initially, 5% used, 16% exhaled Transmission and Distribution line conductors must be joined with full tension splices if the conductors are under tension.