Utility Technician, Field Technician, Utility Certification, Exam Questions, Practice Test, Exams of Advanced Education

INSTANT PDF DOWNLOAD – California Utility Field Technician Certification Exam Questions and Answers with detailed rationales. Covers utility infrastructure installation, maintenance procedures, safety regulations, field inspections, water systems, gas distribution, electrical utilities, troubleshooting, equipment operation, and compliance standards. Ideal for utility technicians and field service professionals preparing for certification exams.

Typology: Exams

2025/2026

Available from 06/24/2026

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1. What is the primary function of a utility field technician?
A. Drafting utility design plans
B. Supervising construction crews
C. Installing, maintaining, and inspecting utility infrastructure
D. Managing municipal budgets
Utility field technicians focus on hands-on work involving the installation,
maintenance, and inspection of infrastructure such as water, gas, or
CALIFORNIA UTILITY FIELD
EXAM QUESTIONS AND ANSWERS WITH
RATIONALES 2026
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  1. What is the primary function of a utility field technician?

A. Drafting utility design plans B. Supervising construction crews C. Installing, maintaining, and inspecting utility infrastructure D. Managing municipal budgets

Utility field technicians focus on hands-on work involving the installation, maintenance, and inspection of infrastructure such as water, gas, or

CALIFORNIA UTILITY FIELD

EXAM QUESTIONS AND ANSWERS WITH

RATIONALES 2026

electric systems.

  1. Which tool is commonly used to locate underground utilities?

A. Infrared thermometer B. Pipe and cable locator C. Tensiometer D. Caliper

C. Inform the media D. Check for electricity

Safety is the first priority. Evacuating and reporting the leak ensures proper response from emergency crews.

  1. Which of the following is a type of backflow prevention device?

A. Float valve B. Reduced Pressure Zone (RPZ) assembly C. Pressure gauge D. Diaphragm regulator

RPZ assemblies are designed to prevent contaminated water from flowing back into the clean water supply.

  1. What does “811” refer to in utility work?

A. Fire hazard level B. Water pressure limit C. Call-before-you-dig number D. Utility pipe size

811 is the national number to call before any digging project to avoid utility line strikes.

  1. What is the minimum trench depth requiring shoring or shielding according to Cal/OSHA?

A. 3 feet B. 5 feet

C. 6 feet D. 7 feet

Trenches deeper than 5 feet must be protected with shoring or trench boxes to prevent collapse.

  1. What type of pipe is commonly used for potable water lines?

A. Cast iron B. PVC or copper C. ABS D. Galvanized steel

PVC and copper pipes are approved for potable water due to their durability and safety.

  1. In a confined space entry, which of the following is essential?

A. A rope B. Extra lighting C. A confined space permit and attendant D. A second technician

Cal/OSHA requires confined space permits and an attendant to monitor entries and ensure safety.

  1. Which type of map shows the location of utilities?

A. Topographic B. Road

Most homes have water pressure between 40 and 80 PSI for optimal performance and safety.

  1. What is the primary function of a backhoe?

A. Load materials B. Compact soil C. Excavate trenches and holes D. Transport tools

Backhoes are commonly used to dig and move earth during utility installation.

  1. Which utility marking color represents water lines?

A. Red B. Yellow C. Blue D. White

According to the APWA Uniform Color Code, blue is used for potable water lines.

  1. What does SCADA stand for?

A. System Control and Data Acquisition B. Supervisory Control and Data Acquisition C. Structural Cable and Distribution Analysis D. Surveillance and Control of Assets

SCADA systems monitor and control utility infrastructure remotely.

  1. Which gas is commonly used in municipal gas systems?

A. Carbon dioxide B. Natural gas (methane) C. Propane D. Oxygen

Methane (natural gas) is widely distributed through utility gas lines.

  1. What is the purpose of grounding electrical utility systems?

A. Increase current B. Prevent shock and ensure safety C. Reduce noise D. Boost voltage

Grounding protects people and equipment by preventing buildup of stray electrical energy.

  1. What safety measure is used to prevent vehicles from entering a utility work zone?

A. Spray paint B. Traffic cones and barricades C. PPE D. Flashlights

Barricades and cones are used to redirect traffic and protect the work area.

A. Electrocution B. Cuts and abrasions C. Fire or explosion D. Slips and trips

Natural gas is highly flammable and can cause explosions if not handled properly.

  1. A dielectric union is used to:

A. Stop water flow B. Join plastic to copper C. Prevent galvanic corrosion between dissimilar metals D. Reduce pressure

Dielectric unions prevent corrosion where dissimilar metals are joined in piping systems.

  1. Which of the following best defines a utility easement?

A. A billing agreement for service B. A temporary work zone C. Legal right to access private property for utility installation or maintenance D. A construction detour

Utility easements give companies legal access to install and service infrastructure on private land.

  1. When using a multimeter, what is measured in ohms?

A. Voltage B. Current C. Resistance D. Pressure

Ohms measure resistance in an electrical circuit.

  1. What is cathodic protection used for?

A. Prevent algae in water pipes B. Prevent corrosion in metal pipelines C. Increase pipe pressure D. Seal pipe joints

Cathodic protection controls corrosion on buried or submerged metal structures.

  1. Which term refers to the height a fluid is raised by pressure?

A. Velocity B. Head C. Flow rate D. Lift

In fluid mechanics, "head" measures the height a fluid can be pushed upward due to pressure.

  1. What is the safe slope for an excavation in Type C soil?

A. 1: B. 1.5:

Vacuum breakers prevent siphoning that could allow contaminated water into the clean water supply.

  1. What color flag is used to mark proposed excavation sites?

A. Red B. White C. Blue D. Green

White flags or paint indicate areas where excavation is planned.

  1. Who is responsible for marking underground utilities?

A. General public B. Construction company C. Utility company or authorized locator D. City council

Utility companies or their contractors are responsible for marking underground lines when notified.

  1. What type of valve allows flow in only one direction?

A. Gate valve B. Check valve C. Globe valve D. Ball valve

Check valves are designed to allow fluid flow in one direction and prevent reverse flow.

  1. What should be done before cutting a pipe in the ground?

A. Measure the pipe length B. Verify pipe contents and pressure status C. Dig around it completely D. Shake the pipe

It’s crucial to confirm the pipe is depressurized and identified to avoid danger.

  1. Which tool would you use to remove debris from a sewer line?

A. Level B. Tamping rod C. Sewer rodder or jetter D. Shovel

Rodders and jetters are used to clear clogs and debris from sewer and storm drain lines.

  1. An air gap in a plumbing system is:

A. A leak in the pipe B. Used to increase air flow C. A physical separation to prevent backflow D. Required for gas meters

An air gap is a critical backflow prevention method in plumbing.

C. At least 2 feet D. 3 feet

OSHA requires spoil piles to be at least 2 feet away to reduce the risk of collapse.

  1. Which agency issues confined space entry permits in California?

A. FEMA B. California Energy Commission C. Cal/OSHA D. CPUC

Cal/OSHA regulates and issues standards for confined space entry and permits.

  1. What is the main hazard of entering a manhole without proper testing?

A. Electrical shock B. Asphyxiation or toxic gas exposure C. Drowning D. Overheating

Manholes can contain dangerous gases or lack oxygen, posing serious health risks.

  1. What is the main function of a pressure regulator in a water system?

A. Increase water pressure B. Maintain consistent downstream pressure C. Prevent leaks D. Filter debris

Pressure regulators reduce and stabilize pressure for downstream equipment.

  1. A torque wrench is used to:

A. Drill holes B. Apply precise rotational force to bolts C. Crimp wires D. Polish metal

Torque wrenches help apply a specific amount of torque to fasteners to avoid under/over-tightening.

  1. What is the maximum allowable air pressure for testing ABS drainage piping?

A. 20 psi B. 10 psi C. 5 psi D. 15 psi

ABS pipe is typically tested at a maximum of 5 psi to prevent damage during inspection.

  1. Which agency oversees drinking water quality compliance?

A. Remove clogs B. Increase pressure C. Clear sediment and disinfect the pipe D. Add chlorine

Flushing clears debris and maintains water quality.

  1. What is a tracer wire used for?

A. Grounding electrical pipes B. Indicating pipe damage C. Locating non-metallic utility lines D. Measuring water flow

Tracer wires are installed with plastic pipes to allow future detection using locators.

  1. Which type of fire extinguisher should be used for electrical fires?

A. Class A B. Class B C. Class C D. Class D

Class C extinguishers are designed for use on energized electrical equipment.

  1. Which of the following is a characteristic of ductile iron pipe?

A. Fragile and rigid B. Strong, flexible, and corrosion-resistant C. Used only for gas D. Requires welding

Ductile iron is known for its strength and durability in water and sewer systems.

  1. What is the primary cause of water hammer?

A. Air in pipes B. Slow flow C. Sudden change in water flow D. High temperature

Water hammer results from a rapid change in flow, causing shock waves in the pipe.

  1. Which measuring device is used to determine water pressure?

A. Thermometer B. Pressure gauge C. Flow meter D. Level

A pressure gauge is used to measure the PSI in a system.

  1. Which process is used to join copper pipes?

A. Gluing B. Soldering (sweating)