Basic Electrical Concepts Quiz

What unit is used to measure electrical voltage?

• Amperes

• Watts

• Ohms

• Volts

What is the purpose of grounding?

• To increase resistance

• To provide a safe path for fault current

• To increase voltage

• To reduce power consumption

What type of current is used in household electrical outlets?

• Direct Current (DC)

• Alternating Current (AC)

• Static Current

• Induced Current

What is the primary function of a GFCI?

• To regulate voltage

• To detect ground faults and interrupt the circuit

• To increase current flow

• To measure resistance

What is the purpose of Lockout/Tagout (LOTO) procedures?

• To increase productivity

• To isolate and de-energize electrical circuits

• To reduce lighting costs

• To test equipment functionality

Which of the following is a safe practice when using extension cords?

• Overloading the circuit

• Running cords under carpets

• Inspecting for damage before use

• Using ungrounded cords in wet areas.

What class of fire extinguisher should be used on an electrical fire?

• Class A

• Class B

• Class C

• Class D

Which type of lighting is most energy-efficient?

• Incandescent

• Fluorescent

• LED

• Halogen

What is "phantom power"?

• Power used by equipment when turned off but still plugged in

• Power generated by wind turbines

• Power lost due to faulty wiring

• Power used by emergency generators.

What is a good way to conserve energy with HVAC systems?

• setting the temperature to extreme settings.

• never changing the filters.

• regularly cleaning the filters.

• leaving doors and windows open.