North Carolina ElectriCities Intermediate Lineworker Practice Exam

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• Raising a secondary with rope blocks requires a rope block attached to a what?
• What hazard is most likely if the transformer secondary is not properly isolated to prevent backfeed?
• The mechanical advantage of a block and tackle is determined by what?
• Why is a ground-fault circuit interrupter (GFCI) not typically used on high-voltage distribution work?
• In general, are workers safe if they remain below the top of a transformer?
• What is the first part of any rigging job?
• What device is used to increase or decrease voltage?
• In a typical distribution system, how is voltage supplied?
• Can capacitors store an electrical charge even when they are disconnected from a power source?
• Why is temporary grounding used during switching operations on a de-energized circuit?
• What are the major components of a transmission and distribution system?
• Describe the difference between delta and wye transformer connections, including the presence of a neutral and phase shift.
• Which of the following is NOT part of the crossarm changeout demonstration?
• What combination is essential for safe pole-work involving potential falls?
• Which term describes the network that ties all equipment grounding in a substation to earth?
• What is the correct procedure for working a switch with a hot-stick from a safe distance?
• What is the next action after the old crossarm is replaced?
• Which component's wire is specifically removed in the final transformer removal step to break the grounding path?
• What is the purpose of a job briefing before starting a line crew task?
• Which elements should be included in a post-job debrief to improve safety?
• Which component is used to carry electrical power along the transmission network?
• Typically, power transformers have a component that comes in at least two different sizes. Which component is this?
• Which of the following is not typically used in a switchyard?
• What is the proper response if a coworker is not following safe energized-work procedures?
• In NFPA 70E terms, what is used to determine the level of PPE required for a task?
• What does an open circuit breaker do to a circuit?
• If a structure shows signs of rotting or corrosion, it may not be possible to rig a job safely from the structure.
• Which of the following statements is correct regarding eye and face protection during arc-flash events?
• What is the purpose of a temporary grounding circuit and how is it installed?
• What is the primary purpose of using a tag line when handling transformers?
• The temporary crossarm was installed close to the old crossarm to minimize movement distance.
• What does the service drop deliver to the customer?
• How should PPE gloves be stored and inspected after use?
• Secondary conductors can be attached using a wedge clamp on the neutral.
• If two slings lift a load and the legs form a wider angle with vertical, the load in each sling will do what?
• Temporary crossarms help stabilize permanent crossarms during changeout.
• Which safety instruction is correct before working on a capacitor?
• What is a protective device that can open an energized line and is often used to connect a lateral to a feeder?
• What is the role of a ground watcher during switching operations?
• Elasticity is defined as the ability of a solid to resist which of the following?
• Which term describes a scenario where two separate feeders supply electricity to critical customers?
• Material handling bucket trucks use a chart for the boom and what load rating?
• Which action is essential when working near exposed energized parts?
• In a ring bus switchyard, a fault on the bus will result in the entire system being de-energized.
• In switching operations, which side of a line is typically opened first to de-energize a circuit, and why?
• Which of the following is not a reason for providing power routing alternatives in a switchyard?
• During high voltage surges, what provides a way of redirecting excess current to the ground?
• Are all of the equipment and structures in a substation connected to a grounding grid?
• Which description best defines the required controls for hot work during line maintenance?
• Which action helps prevent crossarm misalignment when moving the outside phases?
• In a distribution transformer, the voltage on the primary winding is generally what relative to the secondary?
• What is a primary communication requirement for a ground watcher during switching operations?
• During rigging, increasing the angle of the sling legs away from vertical causes the force in each sling to do what?
• Setting the gin pole height correctly helps prevent which condition during transformer replacement?
• Is the voltage applied to the primary winding of a distribution transformer usually higher than the voltage induced in the secondary winding?
• What is a hot-stick?
• Why is it important to verify voltage on both sides of a switch or disconnect after opening?
• When the angle between sling legs and the vertical grows, the tension in each sling does what?
• A sectionalizer can interrupt the flow of electricity through an energized distribution line.
• Doughnut-shaped transformers are often found around the bushings of circuit breakers and power transformers. What type are these transformers?
• What happens if a fault occurs on a feeder?
• A series connection between primary and secondary windings of a voltage regulator causes the primary to act as part of the secondary winding.
• What should be included in a post-job debrief?
• CCVT stands for coupling capacitor voltage transformer.
• Which device is typically donut-shaped and located around the bushings to measure current?
• If the sling angle from vertical increases, the forces in the individual sling legs do what?
• When a load is lifted by multiple slings and the angle from vertical is larger, the tension per sling does what?
• How is arc-flash boundary determined, and what factors influence it?
• Which layout uses two separate feeders to supply electricity to critical customers?
• How should transformers be treated during de-energizing and decommissioning work?
• MAD is used to determine safe clearance from energized equipment based on which factors?
• What device looks like a power transformer, except that its bushings are connected only with the source circuit?
• With two slings sharing a single load, increasing the angle from vertical causes the load on each sling to do what?
• Which transformer connection provides a neutral and line-to-neutral voltage?
• When can a handline be used?
• What is the process of sectionalizing?
• How does a typical distribution transformer function?
• Which set of precautions should be followed when approaching arc-flash hazards in a switchyard during maintenance?
• What is a short circuit and how might you identify one during fault finding?
• In a regulator, what happens to regulated voltage?
• Which voltage level is referred to as the voltage delivered to customers in distribution?
• The final task for removing a transformer requires the lineworker to do what?
• Which protective device can interrupt current flow through a distribution line?
• Does a line trap act as a filter to prevent incoming communication signals from passing through a substation?
• Define a recloser and explain its role in outage restoration.
• In a switchyard, the common conductors to which circuits are connected are called?
• Which statement best describes the distinction between primary and secondary distribution in a typical electric utility system?
• Which statement about stress types in structures is true?
• Line traps in substations are used to filter and prevent incoming communication signals from passing through the substation. True or False?
• When the sling angle relative to vertical increases, the load per sling does what?
• When voltage increases in an AC circuit, what does a connected capacitor do?
• If two slings share a load and you increase the angle, the load in each sling does what?
• What is the standard set of hand signals used by ground crews to communicate with the operator?
• Which type of stress results from a force that pulls on an object?
• True or False: A capacitor increases the overall efficiency of a distribution system.
• During fault finding, what would indicate backfeed after opening a switch?
• With equal load distribution between two slings, widening the angle from vertical results in the force in each sling doing what?
• In a duplicate supply layout, the customer is supplied with electricity from two separate service drops connected to individual feeders.
• Substation equipment is protected from excessive current during faults by utilizing what?
• What is a sectionalizer and how does it differ from a recloser?
• What is the first step described for rigging work in the material?
• A transformer improves the overall efficiency of a distribution system by increasing usable power.
• When verifying zero energy, who may be required to re-test in some procedures?
• Which type of disconnect is specifically hazardous to open when it carries load current?
• Moving the two outside phases in sync keeps the crossarm from becoming what?
• Holding a load steady with two slings, increasing the angle from vertical causes the per-sling load to do what?
• What is the standard method for maintaining three points of contact when climbing a pole?
• A block and tackle rigged to the secondary line primarily provides which of the following to the line?
• As your sling configuration moves away from vertical, the per-sling load tends to do what?
• Which statement best describes pad-mounted transformers?
• Which of the following is typically not associated with power transformers: Cooling Equipment, Sealing Equipment, SF6, or Changing Voltage?
• What is the primary purpose of a face shield or hood in arc-flash PPE?
• Raising conductors requires continuous coordination between crew members.
• What is the purpose of a proper grounding system at service equipment, and how is it typically achieved?
• What is the primary hazard addressed by MAD?
• The ability of any solid material to resist stress is a measure of the material's what?
• What is NFPA 70E Hazard Risk Category (HRC) and how does it influence PPE requirements?
• In a wye transformer connection, what is the role of the neutral?
• More than one type of stress may be present in a structure at the same time.
• Are the two main components of a switchyard switches and buses?
• What is the first step in the crossarm changeout demonstration?
• What is the maximum safe stress load that a structure is built to withstand called?
• What is the primary function of a switchyard?
• One hot hoist was used to move all three conductors because only one conductor can be worked on at a pole. True or false?
• What is the difference between ACSR and EHS conductors?
• What is the purpose of maintaining a designated safe working distance during switching operations?
• If a fault occurs on a lateral, what can a recloser do to allow a fuse to blow?
• A capstan was used because it allowed the operator clearance from directly under the transformer.
• How does a typical voltage regulator operate?
• Which statement best describes the purpose of completing permit procedures before work in a substation?
• What should you inspect on a climbing belt and lanyard before use?
• How should you respond to a suspected arc-trace or burnt smell from equipment?
• When slings are used at an angle from vertical, what happens to the load on each sling?
• What should be done if a coworker’s failure to follow safe energized-work procedures is observed?
• Which device is used to regulate reactive power and can resemble a transformer in appearance, but is connected primarily to the source circuit?
• During a fault on a feeder, which device opens and then recloses the line?
• The circuits in a switchyard are connected to common conductors called what?
• What does the acronym CCVT stand for in the context of substation communications?
• What device is used to reclose after a fault on a lateral?
• Which type of stress cannot be produced by mechanical forces on a structure?
• Where are donut-shaped current transformers typically located?
• Do switchyards typically contain power transformers?
• When working underneath energized conductors, what should always be observed?
• What steps ensure safe recovery and re-energization after completing a repair?
• Which of the following conditions during a pre-job weather check would indicate work should be halted?
• Which statement best describes the effect of sectionalizing on outages?
• What is the purpose of a fall-arrest harness in linework?
• During transformer replacement, why must the gin pole height be carefully set?
• During de-energizing work, what is a common requirement to prevent re-energization?
• Gin pole is designed to provide a lifting point away from a utility pole.
• What constitutes hot work in line maintenance and what controls are typically required?
• Current flow to ground in a substation is dissipated to the earth through what?
• Which type of stress can NOT be produced by mechanical forces on a structure?
• Which statement about circuit breakers is true?
• Are circuits in a substation electrically connected by conductors called buses?
• Which hand signal is used to indicate 'incoming' to the operator?
• Which component is primarily responsible for the voltage change from primary to secondary in a distribution transformer?
• A secondary disconnected from a transformer should be what to ensure no backfeed?
• What hazards are associated with working near high-voltage transmission lines on a pole?
• What should personnel do before working on a capacitor?
• What is the difference between a pole-mounted transformer and a pad-mounted transformer in terms of accessibility and safety?
• What hazards are associated with working near high-voltage transmission lines on a pole, and how should they be addressed?
• Which statement best describes the purpose and installation of a temporary grounding circuit during switching?
• What is the recommended practice for pole replacement safety?
• What is the purpose of performing a pre-job weather check, and what factors are considered?
• What is the primary purpose of using a tag line during transformer handling?
• What is the purpose of a dead-end anchor or pole when working at height?
• Why is a non-conductive rope preferred for use around energized lines?
• Why is ongoing safety training and a strong safety culture essential for lineworkers?
• How should insulated rubber gloves be tested prior to use?
• What is the primary purpose of arc-flash PPE, and how is it selected for a task?
• Which device is used to compensate reactive power in a substation and can resemble a transformer in appearance?
• In a regulator, what happens to unregulated voltage?
• In a ring bus switchyard arrangement, is all power cut off when there is a fault on the bus?
• If part of a circuit in a substation needs to be isolated for maintenance, is the entire substation generally deenergized?
• What is the purpose of cover-up around exposed energized parts, and where is it required?
• Tensile stress is produced by which kind of force?
• Which action minimizes movement distance during crossarm changeout?
• Circuits in a substation are electrically connected by conductors known as what?
• The types of switches used in switchyards are circuit breakers and what?
• Which of the following is NOT an element that most distribution transformers have in common?
• Which statement accurately describes arc-flash PPE components typically included in an arc-flash ensemble?
• What is the function of a remotely operated switch in a distribution network?
• Like substations, do switchyards usually contain protective, monitoring, and communication equipment?
• What is the primary purpose of lockout/tagout devices?
• What is the purpose of temporary crossarms in the changeout process?
• What device steps down transmission voltage to distribution voltage?
• What action follows transfer back in the crossarm changeout sequence?
• Serious injury can result from opening what type of disconnect that is energized with load current?
• What type of voltage is applied to and tapped off of a voltage regulator?
• New rope has a lower safe working load than used rope.
• What is the function of a voltage regulator?
• How do weather conditions affect linework safety?
• Distribution transformers can be buried underground or mounted overhead on utility poles.
• What is the function of insulation covers or sleeves on feeders and switches?
• Which equipment is not typically part of a switchyard?
• After changing a transformer, what must be done before energizing the customer?
• What is primary distribution voltage?
• Why is eye and face protection critical during arc-flash events?
• Which sequence correctly lists the five basic steps of a formal lockout/tagout procedure before working on equipment?
• As the angle between the sling legs and the vertical increases, the force in each sling does what?
• In a typical distribution system, what voltage is supplied to a customer?
• Which steps should you take to verify a circuit is de-energized before work begins?
• In lifting operations, if the sling angle from vertical is increased, the load carried by each sling will do what?
• How should you handle live-line tools that may be contaminated with oil or hydraulic fluid?
• If a tool or glove becomes damaged during an operation, what should be done?
• Which statement about arc-flash boundary calculations is NOT a factor in the calculations themselves?
• Which statement describes why de-energizing and grounding is performed before maintenance?