2nd Year Lineman Apprentice Practice Exam

These questions are part of the practice quiz. Start practicing

• What is the ratio of 10 yards to 6 feet?
• In a series circuit, how is total resistance calculated?
• What is the low side rating for a transformer with secondary internal connections?
• What happens to rubber goods if they are stored in a folded position?
• What is the circular mil of a wire that is 1 inch in diameter?
• What is an expulsion arrester characterized by?
• Which of the following is an advantage of AC in the distribution of electrical power?
• What essential component do modern lightning arresters possess?
• How much power is lost if a load current of 25 amps is drawn through a line resistance of 6.4 ohms?
• What is the purpose of a rubber blanket in electrical work?
• What is the unit of measure for "cycles per second"?
• What may dilated eyes indicate in terms of health condition?
• What is the unit of measure for a quantity of electrons equal to 6.25 x 10^18?
• Which class of fire is a petroleum fire classified as?
• What should the length of the diagonal read on the carpenter's tape if squaring forms for a concrete substation pad measuring 62 feet by 21 feet?
• Which resistor in a series circuit experiences the greatest voltage drop?
• To "aspirate" means to:
• What is the available voltage for a 2400 3 phase 3 wire system?
• What is the circular mil of a wire with a diameter of 7/8 inch?
• What is the first step in the compression procedure on sleeves?
• What happens to power consumption in a series circuit when the circuit is opened?
• What is the significance of the letter 'G' in the high side rating?
• Which high side rating indicates a transformer is suitable for a delta connection only?
• Where is the series street light circuit normally switched on and off from?
• What action should be taken when assembling components that require compression?
• What device in a series street light circuit maintains normal operation despite a bulb burn-out?
• What is the main function of de-ionized gases in a fuse?
• What tool is commonly used to clean conductors before splicing?
• What is another name for "annealed" wire?
• What is the lowest permissible point of attachment for a service drop over an alley or street?
• When should climbing equipment be inspected for safety?
• What is the controlling factor that determines the height of a luminaire?
• What elementary particle of an atom is positive in charge?
• Which symbol indicates the same winding in a transformer rating?
• How should hot sticks be treated before each use?
• What is another name for "annealed" wire?
• In a wye system, the relationship between phase voltage and line voltage is often expressed as which mathematical concept?
• When is EMF generated according to the principles of electromagnetism?
• What is the purpose of a finger line in stringing operations?
• What low side rating would typically have three or four bushings?
• What is a common application for ACSR conductors?
• What device is used to support a wire tong onto a pole during live line work?
• How are the secondary internal connections in a transformer identified?
• The resistance of an ammeter is .025 ohm. What is the power reading when it shows 4 amps?
• What happens to resistance in a high voltage wire when it is scratched?
• Where is the greatest concentration of magnetic flux found on a magnet?
• What type of map do line personnel use to find a general area?
• How are "luminaries" typically classified?
• What does TCUL stand for in the context of transformers?
• What type of switch is utilized for isolating circuits or equipment, but is not designed to be opened under load?
• What device is designed specifically to limit current flow through a lamp?
• What is an older method of joining conductors that is commonly referred to as a "Western Union"?
• If two of the angles in a right triangle measure 30 degrees and 60 degrees, what is the measure of the third angle?
• On which side of the TCUL transformer is the no load tap changer installed?
• Why should rubber goods not be subjected to ozone?
• In terms of electrical systems, what does the term "series" specifically refer to?
• Which term describes a single-phase system's voltage between two phases?
• What symbol in transformer ratings denotes separate windings?
• What type of joint involves twisting conductors together with tools?
• How long is a ladder that reaches a window 17 feet above the ground with its base 5 feet away from the wall?
• What feature is typically found in a transformer rated at 240/120?
• If a coil is drawing 1 amp and contains 100 turns of wire, what is the MMF?
• Which tool can be used to increase the horizontal stability of parallel conductors?
• Which type of wire typically exhibits greater flexibility?
• If the primary voltage (Ep) is 120 volts, the primary current (Ip) is 5 amps, and the secondary current (Is) is 2 amps, what is the secondary voltage (Es)?
• What device is primarily used to regulate voltage in electrical systems?
• Where are stringing blocks designed to be used?
• What does ACSR stand for in electrical terminology?
• Which component is used to achieve operation of the regulator by automatic or manual control?
• If a series street light circuit has a total voltage of 2400 volts and each bulb has a voltage drop of 48 volts, how many street lights are in the circuit?
• What happens to the resistance of a wire when its cross-sectional area increases?
• The United States is divided into loading districts to determine what aspect?
• What type of magnet is produced by DC current flowing through a coil of wire?
• If a room is 50 feet by 100 feet, what is the length of the diagonal?
• What effect does stranding have on a conductor?
• Which of the following describes a conductor's current carrying capacity?
• How many mils are equivalent to 3/4 inch?
• What is the energy required to lift 33,000 pounds 1 foot in 1 minute commonly called?
• What does the "middle finger" represent in the left-hand rule for voltage generation?
• If E1 = 120 volts, E2 = 240 volts, and R2 = 80 ohms, what is R1 in the series circuit?
• How does an expulsion arrester extinguish the arc during operation?
• How can the polarity of individual resistances in a DC circuit be determined?
• Which of the following is an advantage of fiberglass hot sticks compared to wood hot sticks?
• What is the atomic symbol for Magnesium?
• Stranding a conductor greatly increases what aspect of its performance?
• What is the secondary voltage of a distribution transformer with a primary voltage of 2400 volts and a primary current of 15 amps?
• What is the effect of increasing the total resistance in a series circuit?
• A motor draws 10 amps at 120 volts. What is the rate at which work is being done?
• In a series street light circuit, an open would yield a voltage equivalent to what?
• What term is used to refer to either the positive or negative half of a cycle in AC?
• What mechanism is designed to place tension on the conductor during stringing?
• What is the primary use of a guard structure in power-line work?
• Which type of arrester relies on a sectionalizing device to break the arc?
• Which method of joining conductors end to end features spring-loaded wedges?
• Which of the following is NOT typically used for pulling conductors?
• What happens to the safe working load of rope after six months of use?
• What is the unit quantity of light output measured in?
• Which muscles assist in the breathing process between the chest and abdomen?
• Which device is used to measure the charge of a storage battery?
• An atom with an unequal number of electrons and protons is known as what?
• What is another name for a "primary cell" used in electricity?
• How is electrode potential produced in metals placed in an electrolyte?
• What do static wires and protector tubes primarily protect?
• What is the ratio of 5 megawatts to 10,000 kilowatts?
• What is the maximum pulling tension on a conductor that can be pulled in under tension as a percentage of the sag tension?
• What effect does a scratch on a high voltage wire have?
• What happens to the "Minimum Approach Distance" at altitudes exceeding 3000 feet?
• How is the charge of a storage battery measured?
• In transformer ratings, what does the symbol 'x' specifically represent?
• Each tap of a step regulator is typically rated at which percentage?
• In a series circuit, how is the voltage across a resistor related to its resistance?
• How is the rate at which work is being done expressed?
• What is the unit of measurement for power?
• What is the voltage rating of each step on a step regulator?
• What is an atom with a deficiency of electrons classified as?
• What is the purpose of an auxiliary arm in electrical work?
• What is the current flow in a series circuit with three resistors rated at 5 ohms, 10 ohms, and 15 ohms, and a circuit voltage of 240 volts?
• Which of the following is true regarding the clearing time of fuses?
• What is the prefix representing 1000 units?
• What percentage of the current capacity is generally recommended for safe loading of conductors?
• What tool is typically used to clean conductors prior to splicing?
• What is defined as a magnet?
• What prevents the re-strike of the arc after a fuse has been extinguished?
• What does a higher turns ratio in a transformer imply about voltage?
• Which check is essential along with polarity before meter installation?
• Which side is considered the "height" when calculating the area of a right triangle?
• What is the term for the side opposite the right angle in a right triangle?
• Which of the following high side ratings is used for a multi-winding transformer?
• Where is the automatic tap changer installed on the TCUL transformer?
• What characterizes an expulsion fuse?
• Why are modern luminaries preferred in lighting solutions?
• What occurs when all metals are placed in an electrolyte?
• What percentage of the current carrying capacity of the wire is considered "normal loading" for conductors?
• What does the "isolater" attachment do for a lightning arrester?
• Which method involves joining conductors using twin tubes and twisting them with tools?
• Which of the following is a component of a luminaire?
• What method is used to join conductors end to end with the application of a compression tool?
• What method switches street light circuits using a light-sensitive relay?
• What is the purpose of the external arc gap on a value-type arrester?
• What type of rope may be used as a safety line?
• What type of protective equipment uses an air gap for increased insulation value?
• What is the name of the hot stick placed on a handline to increase insulation value?
• What is the function of static wire in lightning protection systems?
• System coordination is designed to temporarily remove what type of faults?
• What type of transformer feeds the series street light circuit?
• How are fuses classified?
• What is "System Voltage" defined as?
• What is a common use for a photoelectric cell?
• What are the two slack methods of stringing wire typically used on?
• Aluminum has approximately what percentage of the conductivity of copper?
• Which component is critical for preventing follow-up line current in a lightning arrester?
• Which unit of measurement would you use for electrical resistance?
• How does an automatic voltage regulator primarily function?
• What type of electrical device isolates line voltage from ground in case of a fault?
• Which construction drawing shows each station on a line in both elevation and plan view?
• What is NOT a common feature of stringing sheaves used in high voltage operations?
• What happens to the electrolyte of a storage battery when it is discharged?
• Which component is essential for back stringing a pilot line without climbing the tower?
• Voltage regulators typically regulate the system voltage by what percentage?
• What type of circuit has all its components connected end to end?
• How many steps does the step regulator typically have?
• What unit of measurement is commonly used to designate the cross-sectional area of wires?
• What is the unit of electrical pressure?
• Twisted, plaited, and braided refer to which basic type of material?
• What is a benefit of stranded wire in electrical applications?
• Is the turns ratio of a transformer directly proportional to voltage?
• What are the two classifications of all conductors?
• In the left-hand rule for voltage generation, what does the "forefinger" indicate?
• What term describes the value of AC voltage that compares with DC for heating effects?
• What term describes breathing air that is lacking oxygen?
• Which is a primary characteristic of aluminum conductors compared to copper conductors?
• What is the rate at which work is being done called?
• What is the purpose of travelers in stringing operations?
• What type of transformer is a step voltage regulator classified as?
• What is the length of the hypotenuse if both other sides of a right triangle measure 12 feet and 16 feet?
• If one component fails in a series circuit, what is the effect on the rest of the circuit?
• What is a fuse composed of compressed cylindrical blocks with a hole in the center called?
• What causes damage to rubber due to high voltage?
• What does a generator do with mechanical energy?
• How would a quality manila rope typically appear in terms of color?
• How often should rubber goods be inspected before use?
• When joining conductors, what is the general guideline for compression order?
• What type of cell is often non-rechargeable?
• Is the turns ratio of a transformer directly proportional to current?
• What is the primary purpose of the "static" wire on a transmission line?
• What describes a relationship where a change in one quantity produces the same change in another quantity?
• What is primarily responsible for damage to rubber caused by sunlight?
• What results from a lack of breathing that can lead to brain damage?
• What is the name of the slender insulated pole designed with a hook clamp on one end and a swivel on the other?
• What type of grip is a Kellum grip?
• What role does a power switch play in a voltage regulator?
• Which of the following is a voltage available for a 13200 volt 3 phase 4 wire system?
• What principle do expulsion fuses operate on?
• What is the purpose of a disconnect switch in electrical circuits?
• What type of current is used to charge a battery?
• Ballast is primarily used in lighting systems to do what?
• What is the proper procedure for the order of compressions when joining conductors?
• In stringing operations, what is a bull-wheel primarily used for?
• If A1 = 200 units, R1 = 50 ohms, and A2 = 100 units, what is R2?
• What is a key characteristic of a constant current transformer?
• What term describes the opposition of a magnetic material to a magnetic field?
• Which of the following aids in the stringing operation of conductors?
• Which high side rating indicates there is one high side bushing?
• From what location should hot line operations from poles be performed?
• Which statement is true regarding magnetic poles?
• Do balanced primary feeders help to reduce voltage drop in a circuit?
• A blockage of blood to the brain is referred to as what?
• What is the ratio of breaking strength to safe working load of a rope?
• In what situation would a series circuit not function properly according to the text provided?
• In a step-regulator, where is the primary coil connected?
• Which factor directly affects the required conductor size?
• In a transformer, how are the currents in the primary and secondary coils related to their voltages?
• What is the minimum ground clearance for a service drop?
• What is the approximate efficiency of a motor with an output of 2 hp and an input of 2487 watts (1 hp equals 746 watts)?
• What type of fuse contains a silver element wound on a central core and is enclosed in silica sand?
• What check must be made before installing a meter?
• When referring to direct proportion, as one quantity increases, what happens to the other?
• In the left-hand rule for voltage generation, what does the "thumb" represent?
• What does the basic impulse level represent in electrical insulation?
• What is the main purpose of "static wires," "lightning arresters," and "protector tubes"?
• What will be the voltage drop across a 10-ohm resistor in a series circuit if a 5 amp fuse blows?
• What voltage is used in a 2400 volt 3 phase system?
• What term refers to the specific conductivity of a material for a magnetic field?
• Which two variables affect the clearing time of a fuse?
• Which of the following factors determine conductor size?
• What symbol in transformer ratings denotes multiple windings?
• What advantage do high-pressure sodium and metal halide lamps have in their light output?
• Normal loading (current capacity) of conductors is what percentage of the current carrying capacity of the wire?
• Which grip is used for attaching the pulling line to the conductor during the stringing operation?
• In a right triangle with a hypotenuse length of 746 feet and one side measuring 524 feet, what is the length of the other side?
• Which factor directly affects the required conductor size?
• Why is a vicinity map important for line personnel?
• Which two variables affect the magnetomotive force of a coil?
• Which type of cell is typically used where limited current is required?
• What is a common characteristic of an arc gap in arresters?
• What are the two classifications of tie sticks?
• What additional resistance must be connected with a 20 ohm lamp rated at 1 amp for use in a 120 volt circuit?
• If the peak value of voltage is 340 volts, what is the effective value of voltage?
• How do you calculate the work done by an electric motor drawing 10 amps at 120 volts?
• How far is the base of a 16-foot ladder from the building if it reaches a point 15 feet above ground?
• What happens to the flexibility of a conductor as it is stranded?
• What is a significant advantage of using three-phase systems in motor operation?
• What ensures that a rope remains safe under load?
• What is the result of adding the fraction 1 1/4 + 2 1/16?
• What is the ratio of phase to phase to neutral in a wye system?
• Which type of arrester is often referred to as a double-gap arrester?
• What do spring-loaded wedges in a joint primarily provide?
• What is the output voltage of a wet cell?
• How is the total power consumed in a series circuit calculated?
• True or False: A series street light circuit is worked as a high voltage circuit for safety purposes.
• Is it true that magnetic flux lines cutting a conductor will generate a voltage?
• What is the purpose of the control transformer in a voltage regulator?
• What does clear or blood-tinged cerebrospinal fluid draining from the nose or ears indicate?
• What is the measure of one angle in a right triangle?
• What is the lead on a down guy if the guy length is 40 feet and the point of attachment to the pole is 31 feet above ground level?
• What can a load current of 25 amps through a 6.4 ohm resistance produce?
• Which function do arc gaps serve in lightning protection equipment?
• Which type of rope is the most popular among power line personnel?
• What type of structure is temporarily used to protect against a conductor accidentally dropped onto a power line or over roads?
• What high side rating indicates a transformer is suitable for a wye connection only?
• What is the primary function of a lightning arrester?
• At what electrical degrees does peak voltage occur in an AC sine wave?
• What is the maximum span length for a service drop?
• Which tool is primarily used as a safety line in various applications?
• What is the standard time delay setting of a voltage regulator?
• In a series circuit with components of unequal resistance, will they have the same voltage drop?
• Which side of a right triangle is the longest?
• Which of the following best describes the purpose of protective devices in a system?
• Which high side rating is used for transformers specifically designed for delta configurations?
• What condition makes stressed rubber more susceptible to damage?
• What feature of a step voltage regulator allows it to ignore brief voltage variations?
• What device directs, controls, or modifies light produced by a lamp?
• What type of coating do travelers have for grounding purposes?
• Which component is responsible for maintaining insulation value in hot line operations?
• What term is used to describe transmission conductors that are paralleled together and fastened to the same support?
• What is the biggest advantage of using aluminum as a conductor?
• When dealing with resistors in series, how do they affect the overall current in the circuit?
• What is the function of an articulated running board?
• What does a strain carrier consist of in a hot stick assembly?
• What is a method of controlling light in various applications?
• How is electrical energy generated from mechanical energy?
• Which of the following is NOT a type of circuit used for street lighting?
• What is the most common wire gauge used in electrical work?
• What does the watt measure in an electrical circuit?
• What is the primary concern when determining the height of a service drop?
• How would you describe the relationship between current and voltage in a series circuit?
• When assessing brain injuries, what physical symptom may be present?
• What type of fire extinguisher is recommended for use on a Class B fire?
• Before by-passing a voltage regulator, it must be in which position?
• Which type of magnet is found naturally in nature?
• What is the "Basic Power Formula" expressed mathematically?
• Is it true that the voltage drop in a series circuit is the same across all components?
• If a motor has a connected load of 4476 watts, what is its horsepower?
• A 15 ohm toaster operates on a 120 volt line. What is its power consumption?
• Which method of conductor joining is characterized by a compression tool application?
• In the context of series circuits, what does the term "additive" refer to?
• In a series circuit, which variable is not additive?
• What is a primary characteristic of lightning protection systems?
• What is the voltage of a typical dry cell?
• What is a generator primarily classified as?
• What is essential before any maintenance on a voltage regulator?
• What is the unit of electrical pressure in a circuit?
• What is the minimum groove size of the bull-wheel as a percentage of the conductor diameter?
• A motor has a connected load of 11,190 watts. What is the horsepower of the motor?
• Is it considered a safety violation to physically hold a conductor in the clear for another workman during live line operations?
• Which unit represents power in the context of electrical work?
• Which chemical is commonly used in contact paste for electrical connections?
• What is the standard diameter of the loops on hot line ties?
• What is the low side rating that would typically have a center tap that is not split?
• What type of circuit is commonly used for street lighting?
• What is one reason high-pressure sodium and metal halide lamps are popular?
• What is the unit of measure for magnetomotive force?