LADWP Electric Station Operator Exam
Circuit Breakers Disconnects
Transformers Actual Exam 2026/2027 –
100% Verified Q&A – A+ Graded (Instant
Download)
1. One of the primary tasks of the Electric Station Operator is
the ______ of high voltage circuits.
A) maintenance
B) switching
C) design
D) monitoring
Answer: B) switching
2. Electrical current may flow across the contacts of ____ to
____ electrical switches before it reaches the consumer.
A) 10, 20
B) 25, 50
C) 50, 100
D) 100, 200
Answer: C) 50, 100
3. The ________ operation of electrical switches can pose a
serious hazard to personnel, can cause destruction of
expensive power system equipment, and can cause
unnecessary interruption of electrical service to consumers.
A) routine
,B) automatic
C) improper
D) emergency
Answer: C) improper
4. Electrical ________ are installed in the path from the
generator to the consumer to provide reliability, flexibility,
and safeguards for the electrical power system.
A) wires
B) switches
C) meters
D) transformers
Answer: B) switches
5. Operators use electrical switches to perform routine,
automatic, and ________ switching operations on the electrical
system.
A) manual
B) emergency
C) scheduled
D) remote
Answer: B) emergency
6. ___________ switching is for maintenance, construction,
cleaning, testing, etc.
Answer: Routine
7. ___________ switching operations include automatic reclosers
(ARs), Voltage Pickup Unit (VPUs), and Automatic Transfer
Switching (ATSs).
Answer: Automatic
,8. ___________ switching operations include isolate trouble,
restoration, 4.8kV Ground Search, etc.
Answer: Emergency
9. The placement of ___________ electrical switches in the power
system makes it possible to limit both the duration and the
extent of power outages.
Answer: Automatic
10. __________ switching performed by Operators is usually in
response to power outages and abnormal conditions such as
overloads.
Answer: Emergency
11. The electrical function of switches falls into two
categories; ___________ of relatively high values of current and
voltage under load AND the switching of circuits to provide a
visual confirmation of de-energization.
Answer: manipulation
12. __________ are electrical switches that are used to
manipulate high values of current and voltage in circuits that
are carrying current or will be carrying current following the
operation.
Answer: Circuit breakers
13. Transformer oil in good condition must be able to
withstand _____kV applied across two flat electrodes
submerged in a staple of the oil without arcing.
Answer: 30
14. __________-ratio is the number of turns of wire in the
primary winding compared to the number of turns in the
, secondary winding.
Answer: Turns
15. An ideal __________ is one in which all the lines of force
produced by the primary winding inductively link every turn
of the secondary winding.
Answer: transformer
16. A transformer whose secondary or output voltage is
higher than its input or primary voltage is called a step-
________ transformer.
Answer: up
17. A transformer whose secondary or output voltage is lower
than its input or primary voltage is called a step-________
transformer.
Answer: down
18. Larger transformers are about _____% efficient.
Answer: 98
19. The amount of __________ delivered by the secondary
winding is less than the amount supplied to the primary
winding.
Answer: power
20. __________ is stepped down, whenever voltage is stepped
up, and vice versa.
Answer: current
21. Large three phase power transformers are generally
referred to as transformer __________ or simply, __________.
Circuit Breakers Disconnects
Transformers Actual Exam 2026/2027 –
100% Verified Q&A – A+ Graded (Instant
Download)
1. One of the primary tasks of the Electric Station Operator is
the ______ of high voltage circuits.
A) maintenance
B) switching
C) design
D) monitoring
Answer: B) switching
2. Electrical current may flow across the contacts of ____ to
____ electrical switches before it reaches the consumer.
A) 10, 20
B) 25, 50
C) 50, 100
D) 100, 200
Answer: C) 50, 100
3. The ________ operation of electrical switches can pose a
serious hazard to personnel, can cause destruction of
expensive power system equipment, and can cause
unnecessary interruption of electrical service to consumers.
A) routine
,B) automatic
C) improper
D) emergency
Answer: C) improper
4. Electrical ________ are installed in the path from the
generator to the consumer to provide reliability, flexibility,
and safeguards for the electrical power system.
A) wires
B) switches
C) meters
D) transformers
Answer: B) switches
5. Operators use electrical switches to perform routine,
automatic, and ________ switching operations on the electrical
system.
A) manual
B) emergency
C) scheduled
D) remote
Answer: B) emergency
6. ___________ switching is for maintenance, construction,
cleaning, testing, etc.
Answer: Routine
7. ___________ switching operations include automatic reclosers
(ARs), Voltage Pickup Unit (VPUs), and Automatic Transfer
Switching (ATSs).
Answer: Automatic
,8. ___________ switching operations include isolate trouble,
restoration, 4.8kV Ground Search, etc.
Answer: Emergency
9. The placement of ___________ electrical switches in the power
system makes it possible to limit both the duration and the
extent of power outages.
Answer: Automatic
10. __________ switching performed by Operators is usually in
response to power outages and abnormal conditions such as
overloads.
Answer: Emergency
11. The electrical function of switches falls into two
categories; ___________ of relatively high values of current and
voltage under load AND the switching of circuits to provide a
visual confirmation of de-energization.
Answer: manipulation
12. __________ are electrical switches that are used to
manipulate high values of current and voltage in circuits that
are carrying current or will be carrying current following the
operation.
Answer: Circuit breakers
13. Transformer oil in good condition must be able to
withstand _____kV applied across two flat electrodes
submerged in a staple of the oil without arcing.
Answer: 30
14. __________-ratio is the number of turns of wire in the
primary winding compared to the number of turns in the
, secondary winding.
Answer: Turns
15. An ideal __________ is one in which all the lines of force
produced by the primary winding inductively link every turn
of the secondary winding.
Answer: transformer
16. A transformer whose secondary or output voltage is
higher than its input or primary voltage is called a step-
________ transformer.
Answer: up
17. A transformer whose secondary or output voltage is lower
than its input or primary voltage is called a step-________
transformer.
Answer: down
18. Larger transformers are about _____% efficient.
Answer: 98
19. The amount of __________ delivered by the secondary
winding is less than the amount supplied to the primary
winding.
Answer: power
20. __________ is stepped down, whenever voltage is stepped
up, and vice versa.
Answer: current
21. Large three phase power transformers are generally
referred to as transformer __________ or simply, __________.
