LADWP ELECTRIC STATION OPERATOR EXAM — CLASS
5224 LADWP ELECTRICIAN EXAM — CLASS 3863
NEWEST EVALUATED EXAM PRACTICE QUESTIONS 2025
2026| ORIGINAL QUESTIONS & ANSWERS | DETAILED
RATIONALES |*HINTED* COMPLETE EXAM PREP
GRADED A+ **INSTANT DOWNLOAD PDF**
1. A station operator observes that a transformer’s oil temperature is rising
steadily while its load remains essentially unchanged. Which condition
should receive the greatest immediate attention?
A. A slight decrease in room temperature
B. A normal increase in station lighting load
C. A developing equipment abnormality requiring investigation
D. A decrease in control-room noise
Answer: C. A developing equipment abnormality requiring investigation
An unexplained temperature rise under substantially unchanged loading can
indicate a developing equipment problem. The operator should verify indications,
inspect the equipment as permitted, and follow station operating procedures.
2. During a station inspection, an operator finds an abnormal configuration
that does not match the expected operating arrangement. What is the most
appropriate first response?
A. Restore the configuration immediately without authorization
B. Ignore it if all meters appear normal
C. Verify the condition, assess the hazard, and report it according to operating
procedures
D. De-energize the entire station
Answer: C. Verify the condition, assess the hazard, and report it according to
operating procedures
,Station configuration abnormalities can have serious operational and safety
consequences. An operator should verify information and follow established
procedures rather than making an unauthorized change.
3. A DC control circuit shows a gradual decrease in voltage while the
associated battery bank is in service. Which inspection is most directly
relevant?
A. Transformer cooling fans only
B. Station lighting fixtures only
C. Battery condition, connections, and associated DC equipment
D. Hydraulic turbine governor oil only
Answer: C. Battery condition, connections, and associated DC equipment
The station DC system provides control and protection functions. A declining DC
voltage requires attention to the battery system and associated connections and
circuits.
4. An operator is instructed to perform a switching operation but notices that
the identification of the device does not agree with the station diagram.
What should the operator do?
A. Operate the device because the instruction came from a supervisor
B. Operate both possible devices to determine which is correct
C. Stop and obtain clarification before operating the device
D. Ask another employee to guess which device is intended
Answer: C. Stop and obtain clarification before operating the device
Correct equipment identification is fundamental to safe switching. A discrepancy
should be resolved before the switching operation proceeds.
5. A meter reading is significantly different from the previous readings, but
nearby indications appear normal. What is the best operating practice?
A. Erase the reading and record the previous value
B. Assume the meter is correct and take no further action
,C. Verify the indication and investigate the discrepancy according to procedure
D. Adjust the meter without authorization
Answer: C. Verify the indication and investigate the discrepancy according to
procedure
Unexpected readings should be verified rather than ignored or altered.
Comparison with related indications can help determine whether the condition is
equipment-related or an instrumentation problem.
6. Why is maintaining an accurate station log particularly important?
A. It eliminates the need for equipment inspections
B. It replaces operating procedures
C. It provides a continuing record of equipment conditions, readings, events, and
actions
D. It allows operators to omit abnormal conditions from reports
Answer: C. It provides a continuing record of equipment conditions, readings,
events, and actions
Accurate records allow successive operators to understand station conditions and
identify trends or abnormalities.
7. A circuit breaker trips unexpectedly while supplying an important station
load. What should the operator do first?
A. Immediately reclose it repeatedly
B. Disable all protective devices
C. Determine the condition of the equipment and follow the applicable
operating procedure
D. Assume the breaker malfunctioned
Answer: C. Determine the condition of the equipment and follow the applicable
operating procedure
Repeated reclosing without determining the cause can worsen an equipment
fault. Protective operation must be treated as meaningful information.
, 8. A station battery has a nominal voltage of 125 V. A measurement indicates
118 V under a condition where the voltage should normally remain near
nominal. What is the most appropriate conclusion?
A. The battery is necessarily fully charged
B. The reading proves the AC system has failed
C. The abnormal voltage warrants verification and investigation
D. The reading should automatically be rounded to 125 V
Answer: C. The abnormal voltage warrants verification and investigation
The deviation is large enough to warrant attention. The operator should verify the
measurement and evaluate battery and DC-system conditions.
9. An operator notices excessive vibration from rotating equipment that was
previously operating smoothly. Which response is most appropriate?
A. Increase the equipment load
B. Ignore the vibration if output remains normal
C. Record and report the abnormal condition and follow applicable inspection or
operating procedures
D. Strike the equipment housing to determine the source
Answer: C. Record and report the abnormal condition and follow applicable
inspection or operating procedures
Unexpected vibration can indicate mechanical or electrical problems. It should be
treated as an abnormal operating condition.
10.Which electrical quantity is measured in amperes?
A. Voltage
B. Resistance
C. Power
D. Current
Answer: D. Current
5224 LADWP ELECTRICIAN EXAM — CLASS 3863
NEWEST EVALUATED EXAM PRACTICE QUESTIONS 2025
2026| ORIGINAL QUESTIONS & ANSWERS | DETAILED
RATIONALES |*HINTED* COMPLETE EXAM PREP
GRADED A+ **INSTANT DOWNLOAD PDF**
1. A station operator observes that a transformer’s oil temperature is rising
steadily while its load remains essentially unchanged. Which condition
should receive the greatest immediate attention?
A. A slight decrease in room temperature
B. A normal increase in station lighting load
C. A developing equipment abnormality requiring investigation
D. A decrease in control-room noise
Answer: C. A developing equipment abnormality requiring investigation
An unexplained temperature rise under substantially unchanged loading can
indicate a developing equipment problem. The operator should verify indications,
inspect the equipment as permitted, and follow station operating procedures.
2. During a station inspection, an operator finds an abnormal configuration
that does not match the expected operating arrangement. What is the most
appropriate first response?
A. Restore the configuration immediately without authorization
B. Ignore it if all meters appear normal
C. Verify the condition, assess the hazard, and report it according to operating
procedures
D. De-energize the entire station
Answer: C. Verify the condition, assess the hazard, and report it according to
operating procedures
,Station configuration abnormalities can have serious operational and safety
consequences. An operator should verify information and follow established
procedures rather than making an unauthorized change.
3. A DC control circuit shows a gradual decrease in voltage while the
associated battery bank is in service. Which inspection is most directly
relevant?
A. Transformer cooling fans only
B. Station lighting fixtures only
C. Battery condition, connections, and associated DC equipment
D. Hydraulic turbine governor oil only
Answer: C. Battery condition, connections, and associated DC equipment
The station DC system provides control and protection functions. A declining DC
voltage requires attention to the battery system and associated connections and
circuits.
4. An operator is instructed to perform a switching operation but notices that
the identification of the device does not agree with the station diagram.
What should the operator do?
A. Operate the device because the instruction came from a supervisor
B. Operate both possible devices to determine which is correct
C. Stop and obtain clarification before operating the device
D. Ask another employee to guess which device is intended
Answer: C. Stop and obtain clarification before operating the device
Correct equipment identification is fundamental to safe switching. A discrepancy
should be resolved before the switching operation proceeds.
5. A meter reading is significantly different from the previous readings, but
nearby indications appear normal. What is the best operating practice?
A. Erase the reading and record the previous value
B. Assume the meter is correct and take no further action
,C. Verify the indication and investigate the discrepancy according to procedure
D. Adjust the meter without authorization
Answer: C. Verify the indication and investigate the discrepancy according to
procedure
Unexpected readings should be verified rather than ignored or altered.
Comparison with related indications can help determine whether the condition is
equipment-related or an instrumentation problem.
6. Why is maintaining an accurate station log particularly important?
A. It eliminates the need for equipment inspections
B. It replaces operating procedures
C. It provides a continuing record of equipment conditions, readings, events, and
actions
D. It allows operators to omit abnormal conditions from reports
Answer: C. It provides a continuing record of equipment conditions, readings,
events, and actions
Accurate records allow successive operators to understand station conditions and
identify trends or abnormalities.
7. A circuit breaker trips unexpectedly while supplying an important station
load. What should the operator do first?
A. Immediately reclose it repeatedly
B. Disable all protective devices
C. Determine the condition of the equipment and follow the applicable
operating procedure
D. Assume the breaker malfunctioned
Answer: C. Determine the condition of the equipment and follow the applicable
operating procedure
Repeated reclosing without determining the cause can worsen an equipment
fault. Protective operation must be treated as meaningful information.
, 8. A station battery has a nominal voltage of 125 V. A measurement indicates
118 V under a condition where the voltage should normally remain near
nominal. What is the most appropriate conclusion?
A. The battery is necessarily fully charged
B. The reading proves the AC system has failed
C. The abnormal voltage warrants verification and investigation
D. The reading should automatically be rounded to 125 V
Answer: C. The abnormal voltage warrants verification and investigation
The deviation is large enough to warrant attention. The operator should verify the
measurement and evaluate battery and DC-system conditions.
9. An operator notices excessive vibration from rotating equipment that was
previously operating smoothly. Which response is most appropriate?
A. Increase the equipment load
B. Ignore the vibration if output remains normal
C. Record and report the abnormal condition and follow applicable inspection or
operating procedures
D. Strike the equipment housing to determine the source
Answer: C. Record and report the abnormal condition and follow applicable
inspection or operating procedures
Unexpected vibration can indicate mechanical or electrical problems. It should be
treated as an abnormal operating condition.
10.Which electrical quantity is measured in amperes?
A. Voltage
B. Resistance
C. Power
D. Current
Answer: D. Current
