LADWP Electrical Craft Helper Exam Prep 2026/2027 |
Questions & Correct Answers | Graded A+
1. What is the purpose of neon gas in a sodium vapor lamp?
It acts as a shield around the filament
It assists in developing enough heat to vaporize the sodium
It prevents vaporization of the filament
It changes the color of light
2. Why is it important to maintain a minimum distance between line hardware in
utility work?
It allows for easier access to the hardware.
Maintaining a minimum distance prevents electrical arcing and
ensures safety.
It increases the efficiency of electrical flow.
It reduces the cost of materials.
3. Describe the role of a wemco in ensuring electrical safety during utility work.
A wemco is used to ground electrical equipment, which helps
prevent electrical shocks and ensures safety.
A wemco measures voltage levels to ensure proper functioning.
A wemco is a type of insulation used for wires.
A wemco supports the structural integrity of electrical poles.
4. The property of conductors to oppose any change in current in AC circuit is
resistance
, capacitance
reluctance
inductance
5. If a hydrometer reading indicates low electrolyte density in a battery, what
action should be taken to ensure proper functioning?
Disconnect the battery from the circuit.
Charge the battery immediately.
Replace the battery with a new one.
Add distilled water to the battery.
6. In a scenario where a worker suffers a burn while performing electrical utility
work, how would you determine the appropriate first aid response based on
the degree of the burn?
Use ointments for all types of burns.
Assess the burn degree to provide appropriate first aid, such as
cooling for 1st degree, covering for 2nd degree, and seeking
medical help for 3rd degree.
Only apply ice to the burn regardless of the degree.
Ignore the burn if it is not severe.
7. If a #4 bare annealed copper ground wire is improperly insulated with black
insulation instead of green, what potential safety issue could arise?
Improved insulation resistance
Increased conductivity
Misidentification of the wire's purpose
, Enhanced durability
8. What is the full form of the acronym W.R.P.V.C. in the context of electrical
terminology?
Weather Resistant Polyvinyl Chloride
Water Resistant Polyvinyl Carbonate
Wattage Rated Polyvinyl Composite
Wire Resistance Polyvinyl Coating
9. In a scenario where a utility worker is repairing a transformer, how would the
use of a wemco contribute to their safety?
By supporting the transformer, the wemco stabilizes the equipment.
By insulating the wires, the wemco prevents short circuits.
By measuring the voltage, the wemco ensures the transformer is
functioning correctly.
By grounding the transformer, the wemco reduces the risk of
electrical shock.
10. Describe the procedure for conducting a butt check on a utility pole.
A butt check is a method to measure the pole's height.
A butt check involves inspecting the base of the pole for stability
and proper anchoring.
A butt check is a safety measure for checking wire insulation.
A butt check is used to test the electrical load capacity of the pole.
11. What is the primary purpose of placing pole risers outside of the climbing
space?
, To reduce installation time
To improve electrical conductivity
To increase the height of the pole
To ensure safety and accessibility
12. What is the primary purpose of a 34.5 cluster in electrical utility work?
To measure electrical current in a circuit.
To serve as a safety switch in electrical systems.
To connect multiple transformers for voltage regulation.
To provide grounding for electrical equipment.
13. Describe the importance of maintaining the minimum distance between pole
steps on utility poles.
The distance is irrelevant as long as the pole is sturdy.
Maintaining the minimum distance between pole steps ensures
safety and accessibility for workers climbing the pole.
Closer steps allow for faster climbing and are therefore preferred.
The distance is only a recommendation and can be adjusted based
on worker preference.
14. If a utility worker is conducting maintenance near an untested vault and
notices a source of ignition within 50 feet, what immediate action should
they take?
Continue working without concern for the ignition source.
Move the source of ignition at least 50 feet away from the vault.
Ignore the source of ignition if it is not actively in use.
Questions & Correct Answers | Graded A+
1. What is the purpose of neon gas in a sodium vapor lamp?
It acts as a shield around the filament
It assists in developing enough heat to vaporize the sodium
It prevents vaporization of the filament
It changes the color of light
2. Why is it important to maintain a minimum distance between line hardware in
utility work?
It allows for easier access to the hardware.
Maintaining a minimum distance prevents electrical arcing and
ensures safety.
It increases the efficiency of electrical flow.
It reduces the cost of materials.
3. Describe the role of a wemco in ensuring electrical safety during utility work.
A wemco is used to ground electrical equipment, which helps
prevent electrical shocks and ensures safety.
A wemco measures voltage levels to ensure proper functioning.
A wemco is a type of insulation used for wires.
A wemco supports the structural integrity of electrical poles.
4. The property of conductors to oppose any change in current in AC circuit is
resistance
, capacitance
reluctance
inductance
5. If a hydrometer reading indicates low electrolyte density in a battery, what
action should be taken to ensure proper functioning?
Disconnect the battery from the circuit.
Charge the battery immediately.
Replace the battery with a new one.
Add distilled water to the battery.
6. In a scenario where a worker suffers a burn while performing electrical utility
work, how would you determine the appropriate first aid response based on
the degree of the burn?
Use ointments for all types of burns.
Assess the burn degree to provide appropriate first aid, such as
cooling for 1st degree, covering for 2nd degree, and seeking
medical help for 3rd degree.
Only apply ice to the burn regardless of the degree.
Ignore the burn if it is not severe.
7. If a #4 bare annealed copper ground wire is improperly insulated with black
insulation instead of green, what potential safety issue could arise?
Improved insulation resistance
Increased conductivity
Misidentification of the wire's purpose
, Enhanced durability
8. What is the full form of the acronym W.R.P.V.C. in the context of electrical
terminology?
Weather Resistant Polyvinyl Chloride
Water Resistant Polyvinyl Carbonate
Wattage Rated Polyvinyl Composite
Wire Resistance Polyvinyl Coating
9. In a scenario where a utility worker is repairing a transformer, how would the
use of a wemco contribute to their safety?
By supporting the transformer, the wemco stabilizes the equipment.
By insulating the wires, the wemco prevents short circuits.
By measuring the voltage, the wemco ensures the transformer is
functioning correctly.
By grounding the transformer, the wemco reduces the risk of
electrical shock.
10. Describe the procedure for conducting a butt check on a utility pole.
A butt check is a method to measure the pole's height.
A butt check involves inspecting the base of the pole for stability
and proper anchoring.
A butt check is a safety measure for checking wire insulation.
A butt check is used to test the electrical load capacity of the pole.
11. What is the primary purpose of placing pole risers outside of the climbing
space?
, To reduce installation time
To improve electrical conductivity
To increase the height of the pole
To ensure safety and accessibility
12. What is the primary purpose of a 34.5 cluster in electrical utility work?
To measure electrical current in a circuit.
To serve as a safety switch in electrical systems.
To connect multiple transformers for voltage regulation.
To provide grounding for electrical equipment.
13. Describe the importance of maintaining the minimum distance between pole
steps on utility poles.
The distance is irrelevant as long as the pole is sturdy.
Maintaining the minimum distance between pole steps ensures
safety and accessibility for workers climbing the pole.
Closer steps allow for faster climbing and are therefore preferred.
The distance is only a recommendation and can be adjusted based
on worker preference.
14. If a utility worker is conducting maintenance near an untested vault and
notices a source of ignition within 50 feet, what immediate action should
they take?
Continue working without concern for the ignition source.
Move the source of ignition at least 50 feet away from the vault.
Ignore the source of ignition if it is not actively in use.
