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3E051 Set D Book1

1. The preferred Air Force base distribution system is 3-Phase-4 Wire
2. A substation with one incoming transmission circuit and three outgoing distribution circuits has (at least) how many lightning arresters? 12
3. Which item supplies control voltage to operate circuit breakers? Batteries
4. 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
5. In regards to the circuit how are a step-voltage regulator's primary and secondary windings configured? 12
6.When can the secondary of a current transformer be opened? When the primary is deenergized
7. Which is not a major function of an oil circuit breaker? A. Provide switching under load B. To stabilize current flow during an overload situation C. To protect system by automatically opening when fault occurs D.Minimize damage to a system by open To stabilize current flow during an overload situation
8. What oil circuit breaker components supply amperage to the protective relays? Current Transformers
9. What percent of electrical system faults are temporary? 95 Percent
10. Of these devices, which does not interrupt a fault current? Fused Cutout Sectionalizers Oil Circuit breaker Oil Current Recloser Sectionalizer
11. Air-Break switches can be used to break a circuit "under load" if they have Arc Horns
12. Why is the arc extinguished so quickly in a vacuum recloser? There is very little oxygen to burn
13. The insulating quality of sulfur hexaflouride (SF6), at 0 PSI, is who much greater than dry air? 2 1/2 times
14. A high-voltage switch is connected to the distribution system that it is to protect in Series
15. 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
16. Oil circuit breaker contacts that are discolored by excessive heat should be Replaced
17. Dielectrically check the oil in oil circuit breakers Every 6 months
18. Which of these acids mixed with water is an effective solution for cleaning insulators and bushings? Boric, Lactic, Muriatic, Sulfuric Muriatic
19. What do you use to clean the arc interrupters of an air-break switch? Cloth or light sanding.
20. Clean a modern air switch that has been closed for a long time by Opening and closing the switch several times
21. Battery bank maintenance is normally done, how often Monthly
22. 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 voltage for a relay that is rated at 600 volts is 1,500 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? Air-Break switch, Over current Relay, Oil Circuit breaker, Distribution Transformer Distribution Transformer
What is the first step in isolating a voltage regulator? Place regulator in the neutral or zero position
For each degree below 77°F, battery capacity is reduced by what percent? 0.8%
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 the secondary transformer windings shows a zero reading the transformer is probably Open
What publication outlines how to perform a flash hazard analysis to determine personal protective equipment requirement? National Fire Protection Association 70 E
Hard hats must meet ANSI289.1 Class E requirements 20,000 V av test for how many minutes? 3
Proper wear of arcflash resistant clothes includes? Coveralls worn with... Metallic Fasteners, Sleeves rolled up, Sleeves rolled down, Top tied around the waist Coveralls worn with sleeves rolled down.
How often should the supervisor inspect body belts for safety straps? Every 6 Months
Which of these is used for a bending test on a body belt or safety strap? Crossarm, Cable Reel, Lineman's wrench, 3/4 inch Mandrel 3/4 inch Mandrel
Which of these is not a way to tell whether gaffs are sharpened properly? Gauging, Plane Test, Slope Test, Pole Cutout Pole Cutout
Which part of the gaff do you sharpen? Top Ridge, Outer Ridge, Rounded Edge, Flat Inner Side? Rounded Edge
What is the required rhythm method when climbing a utility pole? (which foot rises with which arm) Left arm rises as left foot rises
What is the OSHA standard for retraining of climbing tasks performed less than once per year? Annually
Leather protectors or gauntlets should be? A. 4 Inches Longer than the rubber gloves B. 1 to 3 Inches Longer than the rubber gloves C. The same length as the rubber gloves. D. 2 to 5 inches shorter than the rubber gloves D. 2 to 5 Inches shorter than the rubber gloves
For full protection up to the shoulder, rubber sleeves are? A. Worn tucked into rubber gloves B. Worn on the outside of rubber gloves C. Cuffed even with the top of the gloves D. Worn between rubber gloves and gauntlets A. Worn tucked into rubber gloves
Which of these combinations are you likely to use inside rubber gloves? A. Nylon Gloves and hand cream B. Cotton Gloves and hand cream C. Nylon Gloves and dusting powder D. Cotton Gloves and dusting powder D. Cotton Gloves and dusting powder
How often are rubber gloves given an electrical test? Every 6 Months
The supervisor must inspect rubber blankets visually every? 6 Months
How must rubber blankets be stored? Flat or rolled in a blanket canister
Which of the following manufacture's certification tests is acceptable for hot sticks? 75,000 AC, 75,000 DC, 100,000 AC, 100,000 DC? 100,000 Volts AC per foot for 5 minutes on fiberglass and epoxy sticks
How often are hot-line tools tested electrically? Every 6 Months
Test hot sticks electrically with a? Megger, voltmeter, DC Hi-pot test set, High-Voltage phasing tool DC Hi-Pot test 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 should 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? A. In which the bucket is moving B. Away from the cab of the truck C. of the groundman giving signals D. of the pole or equipment to be worked on A. 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? Liner test, basket test, pretest inspection, upper boom insulation test Upper boom insulation test
Who is responsible for daily inspection and overseeing other testing on the aerial lift truck? Principle 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 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 co-workers understand signals to 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? Low Oil, Tire Change, Low tire pressure, Low battery water Low oil
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 than normal, how many inches deeper do we set them 6
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 you used 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
In using the line truck and winch to set a pole, attach the winch line before you raise the pole slightly Above the midpoint of the pole
If a pole must be set in an energized line, what two additional articles of equipment must be used? Rubber Gloves and Pole Guard
Which of these is the best situation for backfilling a pole hole? A. 1 Tamper 3 shovels B. 1 shovel 3 tampers C. 1 tamper 1 raker 2 shovels D. 1 shovel one tamper 2 rakers B. 1 shovel 3 tampers
What is the maximum amount of pole line angle you can have without needing a guy wire?
What type of anchor do we use for hand 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 its place for attachment to the anchor rod? A. Crimps and winch line B. Chain hoist and two strand grips C. Sheave attachment and cable puller D. Cable attachment and two thimble- B. Chain hoist and two strand grips
What are the considered factors that establish the three loading areas conductors in the United States? Longitudinal, transverse, and vertical loading
What insulator material is more resistant to vandalism? Glass
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 spice do you have to chooser the correct size die? Compression
What do you 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 used for what transformer size? 225 kVA
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 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? Shorting stick
For a below-ground check of a pole, to what depth do you dig the trench? 8-18 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, (what is the cause) the conductor has stretched from being hit by a falling object
We must make voltage and current readings on capacitor installations at least (how often)? Annually
Where would you put the tree pruner to add a third section? Lay it flat on the ground
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 before working on deenergized lines? Test and ground the lines
How is the cable used for ground sets constructed 600 volt 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 stoke 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 hot-line clamp
On energized conductors, we keep the tie wires short when removing them from the insulator because this? (does what) Prevents the tie wire from contacting other phases
What tie stick head do we normally use to untie tie wires? Fixed Head
What do we use to raise the auxiliary crossarm assembly once we untie the tie wires? Wire tongs
How many line hoses are needed for a pole 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 voltage audible indicator makes an audible sound when placed (where)? in an electrostatic field
The act of trying to 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 through-bolt? A. On top of the pole B. Lineman's safety strap C. Secured to the handline D. Resting on a screwdriver B. Linemen's Safety Strap
The service meter normally measures? (what) Kilowatt-Hours
What is the formula to find the amount of watt-hours used? Power factor times wattage
Created by: 1445060257
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