LADWP ELECTRIC STATION OPERATOR EXAM — 2025/2026 EDITION |
CIRCUIT BREAKERS, DISCONNECTS, TRANSFORMERS | VERIFIED QUESTIONS
WITH PASSED ANSWERS
SECTION1: SWITCHING OPERATIONS & CLASSIFICATIONS
n
c cn cn cn se
1. Oneof the primary tasks of the Electric Station Operator is the
n
c cn cn cn cn cn cn cn cn cn cn cn of high-voltage circuits.
cn cn
A. monitoring
B. switching
C. maintaining
D. designing
Correct Answer: B. switching
se cn cn
Rationale: The primary operational task of the Electric Station Operator is switching high-
cn cn cn cn cn cn cn cn cn cn cn cn
voltagecircuitstocontrolpowerflow,isolateequipment,andmaintainsystemreliability .
n
c n
c n
c n
c n
c n
c n
c n
c n
c n
c n
c cn
2. switching is performed formaintenance, construction, cleaning, and testing purposes.
cn cn cn cn cn cn cn cn
A. Emergency
B. Automatic
C. Routine
D. Manual
Correct Answer: C. Routine
se cn cn
Rationale:Routineswitchingis plannedworkperformedformaintenance,construction,cleaning,andtes tin g o
n
c n
c n
c se cn n
c n
c n
c n
c n
c n
c n
c cn cn cn
f equipment .
cn cn
3. switching operations include automatic reclosers (ARs), Voltage Pickup Units(VPUs), a n d
cn cn cn se cn se cn cn n
c cn cn cn cn
Automatic Transfer Switching (ATSs).
cn cn cn
A. Manual
B. Emergency
C. Routine
D. Automatic
Correct Answer: D. Automatic
se cn cn
messages.downloaded_by
, Rationale:Automaticswitchingoperationsareperformed bydevicessuchasautomaticreclosers,VPUs, and ATSs wi
n
c n
c n
c n
c cn n
c n
c n
c n
c n
c n
c cn cn cn
thout direct operator intervention .
cn cn cn cn
4. switching is performedinresponse topower outages and abnormal conditions such as o ver
n
c se cn n
c cn n
c cn se cn cn cn cn cn cn
loads.
A. Routine
B. Automatic
C. Emergency
D. Scheduled
Correct Answer: C. Emergency se cn cn
Rationale:Emergency switching is the operator's response topower outages andabnormal conditions .
n
c cn cn cn cn cn cn cn cn cn cn
5. The placement of cn cn
c electrical switchesin the powersystem makes it possibletolimit bot h the duration and the extent of po
n c n cn n
c cn cn n
c se cn cx n
c n
c cx se cn cn cn cn cn cn cn
wer outages. cn
A. manual
B. automatic
C. routine
D. emergency
Correct Answer:B. automatic se cn cn
Rationale:Automaticswitching devices respondinstantly to systemfaults .
n
c n
c cn cn n
c cn cn n
c cn
6. Operators use electrical switches to perform routine, automatic, and
se cn cn cn cn cn cn cn
c switching operations on the electrical system.
n c n cn n
c cn cn cn cn
A. scheduled
B. manual
C. emergency
D. maintenance
Correct Answer: C. emergency se cn cn
Rationale:Thethree categories of switching operations areroutine, automatic, andemergency .
n
c cn cn cn cn cn cn cn n
c cn
7. Bank switching is performed in substations to provide adequate capacity for customer load, to prov id e a
cn cn cn cn cn cn cn cn cn cn cn cn cn cn cn cn cn
n alternate source for customer load when equipment maintenance is required, and to:
cn cn cn cn cn cn cn cn cn cn cn cn
A. reducevoltage n
c
B. search for 4.8kV grounds cn cn cn
messages.downloaded_by
CIRCUIT BREAKERS, DISCONNECTS, TRANSFORMERS | VERIFIED QUESTIONS
WITH PASSED ANSWERS
SECTION1: SWITCHING OPERATIONS & CLASSIFICATIONS
n
c cn cn cn se
1. Oneof the primary tasks of the Electric Station Operator is the
n
c cn cn cn cn cn cn cn cn cn cn cn of high-voltage circuits.
cn cn
A. monitoring
B. switching
C. maintaining
D. designing
Correct Answer: B. switching
se cn cn
Rationale: The primary operational task of the Electric Station Operator is switching high-
cn cn cn cn cn cn cn cn cn cn cn cn
voltagecircuitstocontrolpowerflow,isolateequipment,andmaintainsystemreliability .
n
c n
c n
c n
c n
c n
c n
c n
c n
c n
c n
c cn
2. switching is performed formaintenance, construction, cleaning, and testing purposes.
cn cn cn cn cn cn cn cn
A. Emergency
B. Automatic
C. Routine
D. Manual
Correct Answer: C. Routine
se cn cn
Rationale:Routineswitchingis plannedworkperformedformaintenance,construction,cleaning,andtes tin g o
n
c n
c n
c se cn n
c n
c n
c n
c n
c n
c n
c cn cn cn
f equipment .
cn cn
3. switching operations include automatic reclosers (ARs), Voltage Pickup Units(VPUs), a n d
cn cn cn se cn se cn cn n
c cn cn cn cn
Automatic Transfer Switching (ATSs).
cn cn cn
A. Manual
B. Emergency
C. Routine
D. Automatic
Correct Answer: D. Automatic
se cn cn
messages.downloaded_by
, Rationale:Automaticswitchingoperationsareperformed bydevicessuchasautomaticreclosers,VPUs, and ATSs wi
n
c n
c n
c n
c cn n
c n
c n
c n
c n
c n
c cn cn cn
thout direct operator intervention .
cn cn cn cn
4. switching is performedinresponse topower outages and abnormal conditions such as o ver
n
c se cn n
c cn n
c cn se cn cn cn cn cn cn
loads.
A. Routine
B. Automatic
C. Emergency
D. Scheduled
Correct Answer: C. Emergency se cn cn
Rationale:Emergency switching is the operator's response topower outages andabnormal conditions .
n
c cn cn cn cn cn cn cn cn cn cn
5. The placement of cn cn
c electrical switchesin the powersystem makes it possibletolimit bot h the duration and the extent of po
n c n cn n
c cn cn n
c se cn cx n
c n
c cx se cn cn cn cn cn cn cn
wer outages. cn
A. manual
B. automatic
C. routine
D. emergency
Correct Answer:B. automatic se cn cn
Rationale:Automaticswitching devices respondinstantly to systemfaults .
n
c n
c cn cn n
c cn cn n
c cn
6. Operators use electrical switches to perform routine, automatic, and
se cn cn cn cn cn cn cn
c switching operations on the electrical system.
n c n cn n
c cn cn cn cn
A. scheduled
B. manual
C. emergency
D. maintenance
Correct Answer: C. emergency se cn cn
Rationale:Thethree categories of switching operations areroutine, automatic, andemergency .
n
c cn cn cn cn cn cn cn n
c cn
7. Bank switching is performed in substations to provide adequate capacity for customer load, to prov id e a
cn cn cn cn cn cn cn cn cn cn cn cn cn cn cn cn cn
n alternate source for customer load when equipment maintenance is required, and to:
cn cn cn cn cn cn cn cn cn cn cn cn
A. reducevoltage n
c
B. search for 4.8kV grounds cn cn cn
messages.downloaded_by