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Free 24-Hour Trial · No Credit Card3E051 Practice Exam Electrical Systems Journeyman
1,715 source-linked questions across 32 EWorld objectives. Built for Electrical Systems Airmen testing for E-5: power distribution, airfield lighting, fault locating, manhole entry safety, NFPA fire alarm standards, motor controllers, and the technical orders that drive the SKT.
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Pair this 3E051 SKT with any civilian IT certification practice exam and the civilian exam discounts to $0 at checkout. Electrical Systems experience translates directly to civilian electrician journeyman/master licensing, electrical contracting, and industrial electrical maintenance roles — see the AFSC matcher on the Air Force exams page for the certs that match your career path.
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About This Exam
3E051 Electrical Systems Journeyman Overview
Who It's For
The 3E051 Electrical Systems Journeyman SKT is for Senior Airmen in Electrical Systems testing for promotion to Staff Sergeant. The official test demands command of power distribution, airfield lighting, fault locating, manhole and confined-space entry, fire alarm system maintenance, motor controllers, grounding, NFPA standards, and the technical orders that govern facility electrical work.
Each question is mapped to a specific EWorld objective so you can drill into the procedures and decision points that move your line number — not waste study hours on systems you handle daily in the field.
How It's Different
Electrical Systems is technical and broad — you'll see questions on overhead distribution, underground cables, airfield lighting, interior wiring, fire alarm systems, and motor controllers all on one SKT. PowerKram's chapter-level study lets you target the systems you don't touch in your day job: if your section runs interior, you'll still see questions on airfield lighting and underground fault locating.
With your 24-hour free trial, you get full access to the question library and the analytics that show you exactly which CDC sections need another pass — without entering a credit card.
Why Source-Linked Matters
Every question links to its exact CDC volume, NFPA standard, or technical order. When you miss a question on manhole air sampling or motor controller troubleshooting, you don't just see "wrong" — you see the source so you can read the underlying procedure and understand why.
This is the defining difference between PowerKram and dump-based study sites: every answer is auditable and tied to the doctrine you're tested on.
How Chapter-Level Study Works
Study Smart, Not Long
Every question is tagged to a specific EWorld objective, so you can pinpoint weak areas and focus your study time where it actually moves your line number.
Diagnose
Take a full-length exam in Exam Mode. The engine scores your performance by objective, exposing exactly which CDC sections and technical areas you've mastered and which need work.
Drill
Switch to Learn Mode and filter questions to your weak objectives only. Get immediate feedback and source links so you read the underlying CDC or NFPA material that explains each answer.
Re-Test
Retake full-length exams to confirm mastery. Track your objective-level scores over time so you walk into the testing center knowing exactly where you stand.
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Sample Questions
Ten questions drawn from the 3E051 Electrical Systems Journeyman practice exam. Tap any question to reveal the answer choices and source-linked explanation.
Q01
Overhead Lines · Storm Inspection
A journeyman is assigned to inspect overhead power lines after a storm.
What safety precaution must be taken first?
- ATest voltage with a multimeter
- BNotify base operations
- CInspect poles for pest damage and loose hardware
- DGround the lines
Q02
Lighting Circuits · Diagnostics
A technician is troubleshooting a lighting circuit that intermittently fails.
What tool is most appropriate for diagnosing the issue?
- AInfrared camera
- BVoltage regulator
- CMultimeter
- DGrounding rod
Q03
Airfield Lighting · Visibility
A journeyman is tasked with installing a new airfield lighting system.
What component ensures visibility during low-visibility conditions?
- AVisual glide slope indicators
- BCapacitor banks
- CIntrusion detection alarms
- DCathodic protection
Q04
Confined Space · Manhole Entry
A technician is preparing to work in a manhole.
What safety check must be performed before entry?
- ACheck for rodents
- BTest air samples for gases and oxygen levels
- CVerify cable insulation
- DInspect ladder stability
Q05
LOTO · Breaker Replacement
A journeyman is replacing a faulty breaker in a distribution panel.
What must be done before removal?
- ANotify the commander
- BDisconnect the load and lock out the circuit
- CGround the panel
- DReplace without delay
Q06
Underground Cables · Fault Location
A technician is assigned to repair underground cables.
What tool assists in locating faults?
- AVoltage regulator
- BCable fault locator
- CCathodic tester
- DLine maintenance truck
Q07
Standards · NFPA
A journeyman is inspecting a fire alarm system.
What standard governs installation and maintenance?
- ANFPA
- BOSHA
- CIEEE
- DNEC
Q08
Grounding · Fault Protection
A technician is asked to install a grounding system for a new facility.
What is the primary purpose of grounding?
- AImprove lighting
- BReduce voltage
- CProtect equipment and personnel from electrical faults
- DIncrease current flow
Q09
In-Service Work · Cost Estimates
A journeyman is preparing a cost estimate for an in-service job.
What factor must be included?
- APersonal preferences
- BEngineered performance standards
- CWeather forecast
- DUniform requirements
Q10
Motor Controllers · Technical Orders
A technician is troubleshooting a motor controller malfunction.
What resource provides guidance?
- AAFI 36-2903
- BWiring diagrams and technical orders
- CFitness tracker
- DSafety incident log
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