LINEMAN APPRENTICE RODEO EXAM VERIFIED
TEST PAPER QUESTIONS AND SOLUTIONS
COMPLETE STUDY GUIDE
◉ define the power factor of an alternating-current curcuit.
Answer: the ratio of the actual power to the product of volts times
amperes
PF=watts/VoltsxAmperes
◉ describe the theory of operation of an electric transformer.
Answer: voltage must be stepped up and then must be stepped
down. the transformer is the apparatus used to make these changes
◉ describe a typical electric system.
Answer: powerplant, transmission, transmission lines, substation,
distribution
◉ what is a transmission line?.
Answer: a set of conductors energized at over 69,000 volts and
transmitting large blocks of electrical energy over relatively long
distances
,◉ how do voltage levels of transmission, subtransmision, and
distribution differ?.
Answer: transmission circuits: 69kv-765kv, subtransmission
◉ when is a direct current transmission line used?.
Answer: to transmit large amounts of power over long distances or
to interconnect two AC systems that are not synchronized
◉ list of functions that can be accomplished in an electric substation.
Answer: switch generators, equipment, and circuits or lines in/out
of the system, change AC voltage from on level to another, or
changing AC->DC or DC->AC
◉ list the component parts of the electrical distribution system.
Answer: (1) distribution substation, (2) distribution feeder circuits,
(3) switches, (4) protective equipment, (5) primary circuits, (6)
distribution transformers, (7) secondaries, and (8) services
◉ describe a traditional distribution feeder circuit.
Answer: serve as a source to branch or primary circuits and are
often referred to as distribution main-feeder or express feeder
circuits
◉ what is a primary circuit?.
, Answer: distribution circuits greater than 600 volts up to 69,00 volts
are often referred to as primaries by lineman
◉ what is the purpose of a distribution transformer?.
Answer: to reduce voltage of the primary circuit to the utilization
voltage required to supply the customer
◉ describe an electrical service.
Answer: the wire extending from the distribution transformer,
adjacent to the customers property to the customers premises are
called a service
◉ what is the purpose of an electric substation.
Answer: an electrical substation is an installation with electrical
equipment capable of interrupting or establishing electrical circuits
and changing voltage, frequency, or other characteristics of the
electrical energy flowing in the circuits
◉ equipment found in a typical substation.
Answer: power transformers
tap changing equipment
steel structures
lighting arresters
circuit switchers
TEST PAPER QUESTIONS AND SOLUTIONS
COMPLETE STUDY GUIDE
◉ define the power factor of an alternating-current curcuit.
Answer: the ratio of the actual power to the product of volts times
amperes
PF=watts/VoltsxAmperes
◉ describe the theory of operation of an electric transformer.
Answer: voltage must be stepped up and then must be stepped
down. the transformer is the apparatus used to make these changes
◉ describe a typical electric system.
Answer: powerplant, transmission, transmission lines, substation,
distribution
◉ what is a transmission line?.
Answer: a set of conductors energized at over 69,000 volts and
transmitting large blocks of electrical energy over relatively long
distances
,◉ how do voltage levels of transmission, subtransmision, and
distribution differ?.
Answer: transmission circuits: 69kv-765kv, subtransmission
◉ when is a direct current transmission line used?.
Answer: to transmit large amounts of power over long distances or
to interconnect two AC systems that are not synchronized
◉ list of functions that can be accomplished in an electric substation.
Answer: switch generators, equipment, and circuits or lines in/out
of the system, change AC voltage from on level to another, or
changing AC->DC or DC->AC
◉ list the component parts of the electrical distribution system.
Answer: (1) distribution substation, (2) distribution feeder circuits,
(3) switches, (4) protective equipment, (5) primary circuits, (6)
distribution transformers, (7) secondaries, and (8) services
◉ describe a traditional distribution feeder circuit.
Answer: serve as a source to branch or primary circuits and are
often referred to as distribution main-feeder or express feeder
circuits
◉ what is a primary circuit?.
, Answer: distribution circuits greater than 600 volts up to 69,00 volts
are often referred to as primaries by lineman
◉ what is the purpose of a distribution transformer?.
Answer: to reduce voltage of the primary circuit to the utilization
voltage required to supply the customer
◉ describe an electrical service.
Answer: the wire extending from the distribution transformer,
adjacent to the customers property to the customers premises are
called a service
◉ what is the purpose of an electric substation.
Answer: an electrical substation is an installation with electrical
equipment capable of interrupting or establishing electrical circuits
and changing voltage, frequency, or other characteristics of the
electrical energy flowing in the circuits
◉ equipment found in a typical substation.
Answer: power transformers
tap changing equipment
steel structures
lighting arresters
circuit switchers
