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3E051 2-1
Set 2 Book 1
| Question | Answer |
|---|---|
| The preferred AF base distributaion system is | 3 phase 4 wire |
| A substation with one incoming transmission circuit and three outgoing distribution circuits has at least how many lightning arresters | 12 |
| Which item supplies control voltage to operate circuit breakers | Batteries |
| What is the configuration of an induction voltage regulator's primary and secondary windings | The primary is in shunt and the secondary is in series |
| In regards to the circuit how are a step voltage regulator's primary and secondary windings configured | Primary is in parallel and the secondary is in series |
| When can the secondary of a current transformer be opened | When the primary is deenergized |
| Which is not a major function of a oil circuit breaker | To stabilize current flow during an overload situation |
| What oil circuit breaker components supply amperage to the protective relays | Current transformers |
| What percent of electrical system faults are temporary | 95 percent |
| Of these devices, which does not interrupt a fault current | Sectionalizer |
| Air break switches can be used to break a circuit under load if they have | Arc horns |
| Why is the arc extinguished so quickly in a vacuum recloser | There is very little oxygen to burn |
| The insulation quality of sulfur hexafluoride SF6, at 0 PSI is how much greater than dry air | 2 1/2 times |
| A high voltage switch is connected to the distribution system that it is to protect in | Series |
| What is usually installed with an oil circuit breaker to allow for equipment maintenance letting you keep the circuit in operation | Knife blades and a normally open air break switch |
| Oil circuit breaker contacts that or discolored by excessive heat should be | Replaced |
| Dielectrically check the oil in oil circuit breakers | Every 6 month |
| Which of these acids mixed with water is an effective solution for cleaning insulators and bushings | Muriatic |
| What do yo use to clean the arc interrupters of an air break switch | Cloth or light sanding |
| Clean a modern air switch that has been closed for a long time by | Opening and closing the switch several times |
| Battery bank maintenance is normally done | Monthly |
| What do we use to test a battery cell for its specific gravity | Hydrometer syringe |
| What must you do if you add water to a battery in freezing temperatures | Charge the battery |
| The dielectric test volatge for a relay taht is rated at 600 volts is | 2200 volts |
| After a wiring change to a control device, check substation circuits for | Proper operation |
| Switchboard graphic instruments and revenue watt hour meters must be calibrated every | 4 years |
| Which device is essentially a voltage regulator and requires similar servicing | Distribution transformer |
| What is the first step in isolating a voltage regualtor | Place regulator in the neutral or zero position |
| For each degree below 77 degree F, battery capacity is reduced by what percent | .8 |
| What must you do after repair work on a relay | Make a complete performance test |
| Which meter do you use in a transformer continuity check | Megger |
| If a continuity check between the primary and secondary transformer windings shows a zero reading, the transformer is probably | Good |
| What publication outlines how to perform a flash hazard analysis to determine personal protective equipment requirmement | National Fire Protection Association NFPA 70 E |
| Hard hats must meet ANSI289.1 Class E requirements 20000V AC test for how many minutes | 3 |
| Proper wear of arcflash resistant clothes includes | Coveralls worn with sleeves rolled down |
| How often should the supervisor inspect body belts and safety straps | Every 6 months |
| Which of these is used for a bending test on a body belt or safety strap | 3/4in mandrel |
| Which of these is NOT a way to tell whether gaffs are sharpened proplerly | Slope test |
| Which part of the gaff do you sharpen | Flat inner side |
| What is the required rhythm method when climbing a utility pole | Left arm rises as left foot rises |
| What is the OSHA standard for retraining of climbing tasks performed less then once per year | Annually |
| Leather protectors or gauntlets should be | 2 to 5 inches shorter then the rubber gloves |
| For full protection up to the shoulder, rubber sleeves are | Worn tucked into rubber gloves |
| Which of these combinations are you likely to use inside rubber gloves | Cotton gloves and dusting power |
| How often are rubber gloves given and electrical test | Every 6 months |
| The supervisor must inspect rubber blankets visually every | Year |
| How must rubber blankets be stored | Flat or rolled in blanket canister |
| Which of the following manufacturer's certification tests is acceptable for hotsticks | 100000 volts AC per foot for 5 minutes on fiberglass and epoxy sticks |
| How often are hot line tools tested electrically | Every 6 month |
| Test hot sticks electrically with a | DC hi pot tester set |
| How many high voltage tests are made on a hot stick before it can pass | Four 1 foot segment tests and one overall test |
| At the job site, the aerial lift device shojld be positioned so the work area is always | Within reach of the boom |
| While raising the bucket, the operator should always face in the direction | In which the bucket is moving |
| Materials or tools can only be passed from a worker on the ground to a worker on the aerial lift vehicle when | Both workers are wearing rubber gloves |
| All in use aerial devices must receive a daily | Pretest inspection and periodic verification test |
| The moisture test setup is the same as the | Upper boom insulation test |
| Who is responsible for daily inspections and overseeing other testing on the aerial lift truck | Principal operator |
| The line truck winch is operated | Through the power takeoff |
| When you must work on a slope, position the truck so the work is | On the high side of the truck |
| How is the rope put on the capstan | Wind it clockwise, with the load end next to the truck |
| Holding up a closed fist indicates what | Stop all action |
| The key to using hand signals is what | All operators and coworkers understand signals to be used |
| Which of these is the Operator's Inspection Guide and Trouble Report (Aircraft Towing, Base Maintenance, Deicers, High Reach and Snow Removal), on which you write up line truck inspection discrepancies | AF Form 1806 |
| Which of the following does the motor pool handle | Tire change |
| While you are operating the line maintenance truck, which gauge is the most important to watch | Tachometer |
| In addition to engineers or the Planning section, who assists in making a staking sheet of the area over which the line is to pass | A survey crew |
| Use AF Form 103, Base Civil Engineering Work Clearance Request for | Digging permits |
| For poles that are subject to more strain then normal, how many inches deeper do we set them | 6 inches |
| What method do we use to remove dirt from a power auger | By spinning it off |
| What is the minimum number of workers needed for pole handling | 2 |
| What tool do workers use to position poles on the ground | Cant hook |
| Sort a large number of poles to be stored by | Length |
| What method do we usually use to load poles on a trailer | Boom method |
| In determining the class of a pole, how far up from the pole's butt do you measure its circumference | 6 feet |
| What type of roof do we find on untreated wood poles | Slant |
| What must you do before you cut the roof on a wood pole | Find the pole's face side and back side |
| Where do we make the gain on a wood pole | Face side of the pole |
| In using the line truck and winch to set a ple, attach the winch line before you raise the pole slightly | Above the midpoint of the pole |
| If a pole must be set in a energized line, what two additional articles of equipment must be used | Rubber gloves and pole guard |
| Which of these is the best situation for back filling a pole hole | One shoveler and three tampers |
| What is the maximum amount of pole line angle you can have without needing a guy wire | 5 degrees |
| What type of anchor do we use for hard or compact soil | Expanding anchor |
| What type of guy do we normally use at a curve in the line | Side guy |
| Which of these combinations do you use to draw up a guy wire and hold it in place for attachment to the anchor rod | Chain hoist and two strand grips |
| What are the considered factors that establish the three loading areas for conductors in the United States | Longitudinal, transverse, and vertical loading |
| What insulator material is more resistant to vandalism | Polymer |
| What knots does the person on the ground use to raise a crossarm | Half hitch and clove hitch |
| Use armor rod on | Aluminum conductors |
| You are building a new pole line, which conductor does the person on the ground send up first if you are on the second pole | The inside conductor |
| With what splice do you have to choose the correct size die | Compression |
| What do ou do to prevent a hot line clamp from burning a main conductor | Use a stirrup |
| What type of insulator is used at the dead end for a primary conductor | Suspension insulator |
| What information do you need to find the proper amount of sag | Span length, conductor type, temperature, and loading district |
| Pad mounting transformers is the preferred mounting method for what transformer size | 225kVA |
| Which method do we most likely use to install light, single phase transformers | Block and tackle |
| Where do you connect the top and bottom connection points of a transformer's lightning arrester | Top to primary wire, bottom to ground wire |
| What causes a low power factor on a distribution line | Large induction load in the the circuit |
| What can we install to raise the power factor in a distribution circuit | Capacitors |
| What device do we use across a capacitor's terminals to gradually discharge the capacitor | Resistor |
| For a below ground check of a pole, to what depth do you dig the trench | 8 to 18 inches |
| At what location on a crossarm does decay usually start | Pin holes |
| What condition can cause a crossarm to twist | Unbalanced strain or insufficient guying |
| When a span shows too much sag while adjacent spans appear normal | It's a sign of loose tie wires |
| We must make voltage and current readings on capacitor installations at least | Four times a year |
| Where would you put the tree pruner to add a thrid section | Lean it against a tree limb |
| To remove a limb, where do you make the last cut | Flush with the trunk or parent limb |
| Which device can you use to detect a problem before service is interrupted | Infrared detector |
| What must the electrician do befre working on deenergized lines | Test and ground the lines |
| How is the cable used for ground sets constructed | 600 bolts insulated rubber or synthetic covered flexible copper |
| The first connection you make in applying a ground set is the | Ground |
| When a break occurs in an energized line, how is the line at the break affected | The center disappears, leaving soft wire on either side |
| When you replace an arrester that has been damaged by a stroke of lightning, what do you also check for damage | Ground wire |
| What must you do before working on energized lines | Inspect hot line tools and equipment for proper operation |
| What two connector types do we use when splicing energized conductors | Compression and automatic |
| On energized conductors, we keep the tie wires short when removing them from the insulator because this | Prevents the tie wire from contacting other phases |
| What tie stick head do we normally use to untie tie wires | Rotary blade |
| What do we use to raise the auxiliary crossarm assembly once we untie the tie wires | A handline |
| How many line hoses are needed for a ple change when the pole has a single crossarm supporting three phase conductors | 8 |
| When replacing a pole, how many feet above the pole do you raise the auxiliary arm | 3 to 4 feet |
| The high boltage audible indicator makes an audible sound when placed | In an electrostatic field |
| The act of tying a tagline to each outside conductor with a bowline knot and pulling the conductors out of the work area we call | Tagging out |
| Where do you place the crossarm prior to securing it to the pole with a throughbolt | Linesmen's saftey strap |
| The service meter normally measures | Kilowatt hours |
| What is the formula to find the amount of watt hours used | New reading minus the previous reading |
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