COMPLETE QUESTIONS AND
SOLUTIONS | ALL DETAILED | OFTEN
TESTED AND PASSED | 2025 LATEST
UPDATE.
Q: What three factors determine the severity of an electric shock? ANSWER ✔✔ 1)
Amount of current flowing through the body, 2) Path of current through the body, 3) Length of
time the body is in the circuit
Q: How much current can be lethal? ANSWER ✔✔ 50-150 milliamperes
Q: How much more DC than AC does it take to freeze a body to a conductor? ANSWER
✔✔ 5 times: 12 ma AC, 60 ma DC
Q: What are three types of burns? ANSWER ✔✔ 1) Electrical, 2) Arc, 3) Thermal Contact
Q: What are three well-known examples of electrical protection devices? ANSWER ✔✔ 1)
Fuse, 2) Circuit Breakers, 3) Ground-Fault Circuit Interrupters (GFCIs)
Q: Never use ____ or ____ to extinguish an electrical fire because they are electrically
conductive substances. ANSWER ✔✔ water, foam
Q: What are the 4 steps that should be taken in the case of an electrical fire? ANSWER ✔✔
1) De-energize, 2) Call the fire department, 3) Control / put out the fire, 4) Report fire
, Q: Schematic diagrams are drawn so that the data or signal flows through the circuit from
____ to ____. ANSWER ✔✔ left, right
Q: What are the two methods to troubleshoot a circuit? ANSWER ✔✔ 1) Trial and error, 2)
Logical procedure
Q: What are the four steps to troubleshooting a circuit? ANSWER ✔✔ 1) Analyze the
circuit, 2) Check the setup, 3) Calculate and measure values, 4) Check the results
Q: What are three characteristics of an open? ANSWER ✔✔ 1) Infinite resistance, 2) No
circuit current, 3) Measure applied voltage
Q: What are three characteristics of a short? ANSWER ✔✔ 1) No resistance, 2) Increases
circuit current, 3) Measures 0 voltage
Q: What are the three characteristics of a changed value? ANSWER ✔✔ 1) Resistance
increases or decreases, 2) Increases or decreases circuit current, 3) Measures voltage other than
calculated
Q: What is a representation of AC voltage or current? ANSWER ✔✔ The sine wave
Q: ____ is determined by the number of cycles that occur in one second. ANSWER ✔✔
Frequency
Q: What is the basic unit of measurement for frequency? ANSWER ✔✔ The Hertz (Hz)