lineman rodeo Exam with ||\\//|| ||\\//|| ||\\//|| ||\\//||
accurate detailed solutions ||\\//|| ||\\//||
Describe the electron theory. - correct answer✔✔The basis of our understanding of
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
electricity is the electron theory. this theory states that all matter that is everything that
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
occupies space and has weight is composed of tiny invisible units called atoms. Atoms in
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
turn are subdivided into still smaller parWhat is the minimum depth allowable for direct
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
buried cables operating in the range of 601-22000 volts?ticles, protons, neutrons and
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
electrons. The protons and neutrons make up the central core, or nucleus, of the atom,
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
while the electrons spin around this central core in orbits. the Protons and electrons are
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
charged with small amounts of electricity. the proton always has a positive charge while the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
electron has a small negative charge.
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Define an electric current. - correct answer✔✔The flow of free electrons when a voltage is
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
applied.
Define a conductor. - correct answer✔✔Materials having many free electrons make good
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
conductors of electricity. Copper, Aluminum ||\\//|| ||\\//|| ||\\//|| ||\\//||
Define an insulator. - correct answer✔✔Materials having few free electrons make poor
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
conductors and can be used to insulate electricity. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What are three samples of good insulators? - correct answer✔✔Glass, porcelain, rubber
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
polyethylene and fiberglass. ||\\//|| ||\\//||
What is the unit of electric current? - correct answer✔✔Amp or Ampere
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
,What instrument is used to measure electric current? - correct answer✔✔Ammeter
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the unit of electric pressure? - correct answer✔✔Volt , Voltage is the electric force
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
or pressure that is determined by the potential difference between any two points in a
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
circuit.
Draw a schematic diagram to illustrate the proper methods of connecting instruments to a
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
single-phase motor to measure electric current and the electric pressure supplied to the ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
motor. Voltmeter in parallel, Ammeter in series. - correct answer✔✔
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the unit of electric power? - correct answer✔✔Watt
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Draw a schematic illustrating the method of connecting a wattmeter in a single-phase
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
circuit to measure the power consumed. - correct answer✔✔
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the unit of electric energy? - correct answer✔✔Watt-hours or kWh Electricity must
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
act for a period of time in order to do useful work. The power expressed in watts tells how
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
much electricity is working, and the hours express the time during which it acts. The
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
product of these two factors gives the amount of work done. Power × Time = energy Watts
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
× Hours = Watt Hours
||\\//|| ||\\//|| ||\\//|| ||\\//||
What instrument is used to measure electric energy? - correct answer✔✔Watt-hour Meter
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
(typical house meter) ||\\//|| ||\\//||
What is the formula for Ohm's law? - correct answer✔✔E=I×R I = R=
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Define an alternating current. - correct answer✔✔ ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
,What is the unit of an alternating-current frequency? - correct answer✔✔Number of Cycles
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
per second Hertz or (Hz)
||\\//|| ||\\//|| ||\\//|| ||\\//||
Define the power factor of an alternating-current circuit. - correct answer✔✔Power Factor -
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
when an alternating voltage and the current which it causes to flow rise and fall in value
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
together and reverse direction at the same instant, the two are said to be ' in phase' and the ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
power factor is unity. Watts = Volts × Amps × Power Factor Power Factor =
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Describe the theory of operation of an electric transformer. - correct answer✔✔ ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Describe a typical electric system, itemizing the major parts of the system - correct ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
answer✔✔€Generation: Nuclear, Fossil Fuel, Hydro Electric €Generated between 13,200 ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
and 24,000 volts €Stepped up to transmission voltages between 138,000 and
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
765,000volts€Transmission Substations step down to Subtransmission voltages between ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
34,500 and 161,000 volts €Distribution Substations step down to voltages between
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
4160/2400 and 34,500/19,920 volts -Underground and Overhead Branch Circuits • ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Transformers step down voltages to 120/240, three phase voltages of 120/208 or 277/480. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is a transmission line? - correct answer✔✔A set of conductors energized at voltages
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
over 69,000 volts and transmitting large blocks of electrical energy over relatively long
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
distances.
How do the voltage levels of transmission, sub-transmission, and distribution lines
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
compare? - correct answer✔✔High voltages used for AC transmission lines are 115,000; ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
138,000; 161,000 volts - Extra-High-voltage (EHV) Lines are energized at 345,000 - 765,000 ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
volts.
When are direct-current transmission lines used? - correct answer✔✔Overhead direct-
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
current transmission circuits are used where it is desired to transmit large amounts of
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
power over long distances or to interconnect 2 AC systems that are not synchronized. E.g. a
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
400,000 Volt line could operate with one conductor positive and one conductor negative. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, List the functions that can be accomplished in an electric substation. - correct
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
answer✔✔Switch generators, equipment and circuits or lines in and out of the system ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Change AC voltage levels. Change AC Current to DC Current or vice versa ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
List the component parts of the electric distribution system. - correct answer✔✔-
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Distribution substation -Distribution Feeder Circuits - Switches - Protective Equipment - ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Primary Circuits - Distribution Transformers - Secondary's - Services ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Describe a typical distribution feeder circuit. - correct answer✔✔ ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is a primary circuit? - correct answer✔✔All high-voltage distribution circuits greater
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
than 600 volts up to 69,00 volts ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
||\\//|| Connected to Distribution or Express Feeders. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the purpose of the distribution transformer installed on an electric distribution
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
circuit? - correct answer✔✔Reduce the voltage of the primary circuit to the utilization
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
voltage required to supply the customer. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Describe an electric service. - correct answer✔✔Wires extending from the secondary, or ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
distribution transformer, adjacent to the customer's property to the customer's premises. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
o Triplex, quadriplex, open buss.
||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the purpose of an electric substation? - correct answer✔✔An electrical substation is
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
an installation with electrical equipment capable of interrupting or establishing electrical
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
circuits and changing the voltage, frequency or other electrical energy flow characteristics.
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
accurate detailed solutions ||\\//|| ||\\//||
Describe the electron theory. - correct answer✔✔The basis of our understanding of
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
electricity is the electron theory. this theory states that all matter that is everything that
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
occupies space and has weight is composed of tiny invisible units called atoms. Atoms in
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
turn are subdivided into still smaller parWhat is the minimum depth allowable for direct
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
buried cables operating in the range of 601-22000 volts?ticles, protons, neutrons and
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
electrons. The protons and neutrons make up the central core, or nucleus, of the atom,
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
while the electrons spin around this central core in orbits. the Protons and electrons are
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
charged with small amounts of electricity. the proton always has a positive charge while the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
electron has a small negative charge.
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Define an electric current. - correct answer✔✔The flow of free electrons when a voltage is
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
applied.
Define a conductor. - correct answer✔✔Materials having many free electrons make good
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
conductors of electricity. Copper, Aluminum ||\\//|| ||\\//|| ||\\//|| ||\\//||
Define an insulator. - correct answer✔✔Materials having few free electrons make poor
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
conductors and can be used to insulate electricity. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What are three samples of good insulators? - correct answer✔✔Glass, porcelain, rubber
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
polyethylene and fiberglass. ||\\//|| ||\\//||
What is the unit of electric current? - correct answer✔✔Amp or Ampere
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
,What instrument is used to measure electric current? - correct answer✔✔Ammeter
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the unit of electric pressure? - correct answer✔✔Volt , Voltage is the electric force
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
or pressure that is determined by the potential difference between any two points in a
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
circuit.
Draw a schematic diagram to illustrate the proper methods of connecting instruments to a
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
single-phase motor to measure electric current and the electric pressure supplied to the ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
motor. Voltmeter in parallel, Ammeter in series. - correct answer✔✔
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the unit of electric power? - correct answer✔✔Watt
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Draw a schematic illustrating the method of connecting a wattmeter in a single-phase
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
circuit to measure the power consumed. - correct answer✔✔
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the unit of electric energy? - correct answer✔✔Watt-hours or kWh Electricity must
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
act for a period of time in order to do useful work. The power expressed in watts tells how
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
much electricity is working, and the hours express the time during which it acts. The
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
product of these two factors gives the amount of work done. Power × Time = energy Watts
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
× Hours = Watt Hours
||\\//|| ||\\//|| ||\\//|| ||\\//||
What instrument is used to measure electric energy? - correct answer✔✔Watt-hour Meter
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
(typical house meter) ||\\//|| ||\\//||
What is the formula for Ohm's law? - correct answer✔✔E=I×R I = R=
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Define an alternating current. - correct answer✔✔ ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
,What is the unit of an alternating-current frequency? - correct answer✔✔Number of Cycles
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
per second Hertz or (Hz)
||\\//|| ||\\//|| ||\\//|| ||\\//||
Define the power factor of an alternating-current circuit. - correct answer✔✔Power Factor -
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
when an alternating voltage and the current which it causes to flow rise and fall in value
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
together and reverse direction at the same instant, the two are said to be ' in phase' and the ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
power factor is unity. Watts = Volts × Amps × Power Factor Power Factor =
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Describe the theory of operation of an electric transformer. - correct answer✔✔ ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Describe a typical electric system, itemizing the major parts of the system - correct ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
answer✔✔€Generation: Nuclear, Fossil Fuel, Hydro Electric €Generated between 13,200 ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
and 24,000 volts €Stepped up to transmission voltages between 138,000 and
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765,000volts€Transmission Substations step down to Subtransmission voltages between ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
34,500 and 161,000 volts €Distribution Substations step down to voltages between
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4160/2400 and 34,500/19,920 volts -Underground and Overhead Branch Circuits • ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Transformers step down voltages to 120/240, three phase voltages of 120/208 or 277/480. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is a transmission line? - correct answer✔✔A set of conductors energized at voltages
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over 69,000 volts and transmitting large blocks of electrical energy over relatively long
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distances.
How do the voltage levels of transmission, sub-transmission, and distribution lines
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compare? - correct answer✔✔High voltages used for AC transmission lines are 115,000; ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
138,000; 161,000 volts - Extra-High-voltage (EHV) Lines are energized at 345,000 - 765,000 ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
volts.
When are direct-current transmission lines used? - correct answer✔✔Overhead direct-
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current transmission circuits are used where it is desired to transmit large amounts of
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power over long distances or to interconnect 2 AC systems that are not synchronized. E.g. a
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400,000 Volt line could operate with one conductor positive and one conductor negative. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, List the functions that can be accomplished in an electric substation. - correct
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answer✔✔Switch generators, equipment and circuits or lines in and out of the system ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Change AC voltage levels. Change AC Current to DC Current or vice versa ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
List the component parts of the electric distribution system. - correct answer✔✔-
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Distribution substation -Distribution Feeder Circuits - Switches - Protective Equipment - ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Primary Circuits - Distribution Transformers - Secondary's - Services ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Describe a typical distribution feeder circuit. - correct answer✔✔ ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is a primary circuit? - correct answer✔✔All high-voltage distribution circuits greater
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than 600 volts up to 69,00 volts ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
||\\//|| Connected to Distribution or Express Feeders. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the purpose of the distribution transformer installed on an electric distribution
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circuit? - correct answer✔✔Reduce the voltage of the primary circuit to the utilization
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voltage required to supply the customer. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Describe an electric service. - correct answer✔✔Wires extending from the secondary, or ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
distribution transformer, adjacent to the customer's property to the customer's premises. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
o Triplex, quadriplex, open buss.
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What is the purpose of an electric substation? - correct answer✔✔An electrical substation is
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an installation with electrical equipment capable of interrupting or establishing electrical
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circuits and changing the voltage, frequency or other electrical energy flow characteristics.
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