EEI TECH EEI Tech Tools and Equipment 1 — Questions and Answers
Question 1: Which tool measures electrical current in a live conductor without breaking the circuit?
- Voltage tester
- Clamp meter (Correct answer)
- Continuity tester
- Megohmmeter
Correct answer: Clamp meter
A clamp meter's jaws encircle the conductor and detect the magnetic field produced by current flow, allowing measurement without interrupting the circuit.
Question 2: What is the primary function of a multimeter?
- Display voltage waveforms over time
- Test insulation resistance only
- Measure voltage, current, and resistance in one device (Correct answer)
- Generate tones to trace cables
Correct answer: Measure voltage, current, and resistance in one device
A multimeter (volt-ohm meter) combines functions to measure AC/DC voltage, current, and resistance in a single portable instrument.
Question 3: What is the purpose of a non-contact voltage tester?
- Measure exact voltage levels
- Detect the presence of voltage without touching the conductor (Correct answer)
- Test circuit continuity
- Measure insulation resistance
Correct answer: Detect the presence of voltage without touching the conductor
A non-contact voltage tester detects the electromagnetic field surrounding a live AC conductor, signaling voltage presence without physical contact.
Question 4: What does a torque wrench allow a technician to do?
- Cut bolts to a specific length
- Apply a precise amount of rotational force to a fastener (Correct answer)
- Measure the diameter of fasteners
- Remove stripped screws
Correct answer: Apply a precise amount of rotational force to a fastener
A torque wrench measures and limits the rotational force applied to a fastener, ensuring tightening meets manufacturer specifications.
Question 5: Which tool is specifically designed to remove insulation from electrical wire without damaging the conductor?
- Needle-nose pliers
- Lineman's pliers
- Wire stripper (Correct answer)
- Diagonal cutters
Correct answer: Wire stripper
A wire stripper has calibrated notches sized to each wire gauge that grip and cleanly remove insulation while protecting the conductor underneath.
Question 6: What does a continuity tester verify about a circuit?
- The voltage level present
- Whether an unbroken electrical path exists between two points (Correct answer)
- The quality of cable insulation
- The amperage draw of a device
Correct answer: Whether an unbroken electrical path exists between two points
A continuity tester passes a small current between two test points and indicates whether a complete, unbroken electrical path connects them.
Question 7: A conduit bender is used to:
- Straighten bent metal conduit
- Form smooth, accurate bends in electrical conduit (Correct answer)
- Cut conduit to length
- Thread the ends of conduit for connectors
Correct answer: Form smooth, accurate bends in electrical conduit
A conduit bender uses a formed shoe and leverage to create precise bends in metal or PVC conduit without crimping or collapsing it.
EEI TECH EEI Tech Tools and Equipment 1
Which tool measures electrical current in a live conductor without breaking the circuit?