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Lineman Apprentice Substation and Switchyard test questions, Exams of Advanced Education

Cheyney University of PennsylvaniaAdvanced Education

Lineman Apprentice Substation and Switchyard test questions

Typology: Exams

2025/2026

Available from 05/27/2026

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LINEMAN APPRENTICE SUBSTATION AND
SWITCHYARD TEST QUESTIONS
1.
1-1. Circle the correct answer to complete the following
sentence.
The major components of a transmission and
distribution system are:
a)
substations.
b)
switchyards.
c)
transmission lines.
d)
distribution lines.
e)
all
of
the
above.:
e) all of the above.
2.
1-2. Circle the correct answer.
What is the primary function of a substation?
a)to decrease voltage for transmission or increase voltage for
distribution
b) to increase voltage for transmission and decrease voltage for
distribution
c)
to maintain voltage for transmission and distribution lines
d)
to send transmission voltage to switchyards: b) to increase voltage for
transmission and
decrease voltage for distribution
3.
1-3. Circle the correct answer.
What is the primary function of a switchyard?
a)
to route electricity to various circuits
b) to decrease transmission voltage
c)to increase transmission voltage
d)
to
save
on
the
cost
of
a
power
transformer:
a) to route electricity to various
circuits
pf3
pf4
pf5
pf8

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1 /

LINEMAN APPRENTICE SUBSTATION AND

SWITCHYARD TEST QUESTIONS

  1. 1-1. Circle the correct answer to complete the following sentence. The major components of a transmission and distribution system are: a) substations. b) switchyards. c)transmission lines. d) distribution lines. e) all of the above.: e) all of the above.
  2. 1-2. Circle the correct answer. What is the primary function of a substation? a) to decrease voltage for transmission or increase voltage for distribution b) to increase voltage for transmission and decrease voltage for distribution c)to maintain voltage for transmission and distribution lines d) to send transmission voltage to switchyards: b) to increase voltage for transmission and decrease voltage for distribution
  3. 1-3. Circle the correct answer. What is the primary function of a switchyard? a) to route electricity to various circuits b) to decrease transmission voltage c)to increase transmission voltage d) to save on the cost of a power transformer: a) to route electricity to various circuits

2 /

  1. 1-4. Circle the correct answer to complete the following sentence. Voltage is increased or decreased by a: a) switchyard. b) power transformer. c)circuit breaker. d) bus. e) none of the above.: b) power transformer.
  2. 1-5. Circle the correct answer. The circuits in a switchyard are connected to common conductors called: a) taxis. b) buses. c)trains. d) switchyard lines.: b) buses.
  3. 1-6. Circle the correct answer. The types of switches used in switchyards are circuit breakers and . a) disconnects b) reconnects c)circuit blades d) sectionalizers: a) disconnects
  4. 1-7. True or False. Switchyards typically contain power transformers.: False
  5. 1-8. True or False. Like substations, switchyards usually contain protective equipment, monitor-ing equipment, and communication equipment.: True
  6. 2-1. Circle the correct answer.

4 / a) capacitor ground. b) grid disconnect. c)circuit ground. d) grounding grid.: d) grounding grid.

  1. 3-2. True or False. All of the equipment and structures in a substation are connected to a ground-ing grid.: True
  2. 3-4. Circle the correct answer to complete the sentence. Substation equipment is protected from excessive current during faults by utilizing: a) current limiting fuses. b) current suppressing horns. c)circuit sectionalizers. d) circuit breakers.: d) circuit breakers
  3. 3-5. Circle the correct answer. Serious injury can result from opening a disconnect that is energized with load current. a) ground switch b) load vacuum c)non-oil filled d) non-load break: d) non-load break
  4. 4-1. Match each device with its appropriate description. Write the number of the correct answer in the blanks for (a) through (d). a) Tap changer b) Voltage regulator c) Capacitor bank

5 / d) Shunt reactor

  1. Used by some companies in their substations (to adjust voltage); used by the companies primarily in rural distribution systems
  2. Improves system efficiency by counterbalancing capacitive loads
  3. Often used on power transformers to adjust voltage; has movable contacts
  4. Improves system efficiency by counterbalancing inductive loads: a.) 3, b.) 1, c.) 4, d.) 2
  5. 4-2. Circle the correct answer to fill the blank in the sentence. A looks like a power transformer, except that its bush-ings are connected only with the source circuit. a) voltage regulator b) circuit breaker c)capacitor bank d) shunt reactor: d) shunt reactor
  6. 4-3. True or False. Capacitors can store an electrical charge even when they are disconnected from a power source.: True
  7. 5-1. Match each device with its appropriate description. Write the number of the correct answer in the blanks for (a) through (d). a) Potential transformer b) Current transformer c) Meter d) Relay

7 /

  1. Reduces line current to a proportionally lower and safer current for meter-ing and relaying: a.) 1, b.) 4, c.) 3, d.) 2
  2. 5-2. Circle the correct answer. A device used to transmit information to and from a substation is a CCVT. What does CCVT stand for? a) cable communication voltage transformer b) circuit communication voltage transformer c)coupling capacitor victor transformer d) coupling capacitor voltage transformer: d) coupling capacitor voltage transformer
  3. 5-3. Circle the correct answer. Doughnut-shaped transformers are often found around the bushings of circuit breakers and power transformers. a) current b) potential c)power d) voltage: a) current
  4. 5-4. True or False. A line trap acts as a filter to prevent incoming communication signals from passing through the substation to other power lines and mixing with other signals.: True
  5. 6-1. True or False. The two main components of a switchyard are switches and buses.: True
  6. 6-2. Circle the correct answer. An open circuit breaker a circuit. a) connects

8 / b) disconnects c)energizes d) regulates: b) disconnects

  1. 6-3. Circle the correct answer. All of the following types of equipment are typically used in a switchyard except: a) communication equipment. b) protective equipment. c)regulation equipment. d) monitoring equipment.: c) regulation equipment.
  2. 6-4. Circle the correct answer. All of the following are reasons for providing power routing alternatives in a switchyard except: a) to isolate faults without interrupting service. b) to transfer loads. c)to route current through a power transformer. d) to isolate and disconnect components for maintenance.: c) to route current through a power transformer
  3. 6-5. True or False. In a ring bus switchyard arrangement, all power is cut off when there is a fault on the bus.: False