CEA Tools, Equipment & Testing Procedures 5

Question 1

A power quality analyzer is used on a commercial installation primarily to detect:

Accepted Answer

Harmonics, voltage sags, swells, and transients on the electrical system

Answer

Power quality analyzers capture waveform disturbances including harmonics, voltage sags/swells, and transients that can damage sensitive equipment.

Question 2

When using a wire stripper, selecting a hole that is too small for the conductor will most likely result in:

Accepted Answer

Nicking or cutting the copper conductor strands

Answer

Using a stripper hole smaller than the conductor diameter causes the blades to bite into the copper strands, weakening the conductor.

Question 3

Which personal protective equipment (PPE) is required when operating a powder-actuated fastening tool?

Accepted Answer

Safety glasses, hearing protection, and a hard hat as a minimum

Answer

Powder-actuated tools produce loud impulse noise and risk flying debris, requiring eye protection, hearing protection, and head protection at minimum.

Question 4

A thermal imaging camera used for electrical inspections identifies hot spots by detecting:

Accepted Answer

Infrared radiation emitted by objects proportional to temperature

Answer

Thermal cameras detect infrared radiation, which increases with temperature, allowing electricians to find overloaded connections and failing components without contact.

Question 5

Before using a hand bender on rigid PVC conduit, the electrician should:

Accepted Answer

Heat the area to be bent with a hot box or heat gun until pliable

Answer

PVC conduit must be uniformly heated until pliable before bending to prevent cracking or kinking.

(CEA) Certified Electrical Apprentice Practice Test

(CEA) Certified Electrical Apprentice Practice Test

CEA Tools, Equipment & Testing Procedures 5