ANM VVI Questions

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What is the primary function of a circuit breaker?

  • A) To increase voltage
  • B) To decrease current
  • C) To prevent electrical overload
  • D) To connect circuits

C) To prevent electrical overload

What is the unit of electrical resistance?

  • A) Volt
  • B) Ampere
  • C) Ohm
  • D) Watt

C) Ohm

Which tool is commonly used to measure electrical current?

  • A) Voltmeter
  • B) Ammeter
  • C) Ohmmeter
  • D) Oscilloscope

B) Ammeter

In a residential electrical system, what color is typically used for the ground wire?

  • A) Black
  • B) Red
  • C) Green
  • D) White

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>C) Green</p> </div>

What does AC stand for in electrical terms?

  • A) Alternating Current
  • B) Ampere Current
  • C) Active Current
  • D) Alternative Current

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>A) Alternating Current</p> </div>

What is the standard voltage for household electrical outlets in the United States?

  • A) 120V
  • B) 220V
  • C) 240V
  • D) 110V

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>A) 120V</p> </div>

Which device converts AC to DC?

  • A) Transformer
  • B) Rectifier
  • C) Inverter
  • D) Generator

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>B) Rectifier</p> </div>

What is the function of a fuse in an electrical circuit?

  • A) To increase current
  • B) To protect the circuit by breaking the connection in case of overload
  • C) To convert AC to DC
  • D) To decrease voltage

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>B) To protect the circuit by breaking the connection in case of overload</p> </div>

Which of the following is a type of electrical conduit used for wiring?

  • A) PVC
  • B) Copper
  • C) Aluminum
  • D) Gold

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>A) PVC</p> </div>

What does the term “short circuit” refer to?

  • A) A connection that completes the circuit
  • B) A circuit with too much resistance
  • C) A direct connection between the positive and negative sides of the power source
  • D) A circuit with too little resistance

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>C) A direct connection between the positive and negative sides of the power source</p> </div>

What is the purpose of a ground fault circuit interrupter (GFCI)?

  • A) To prevent electrical fires
  • B) To detect ground faults and interrupt the circuit
  • C) To regulate voltage levels
  • D) To increase electrical current

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>B) To detect ground faults and interrupt the circuit</p> </div>

Which component is used to control the flow of current in a circuit?

  • A) Resistor
  • B) Capacitor
  • C) Inductor
  • D) Switch

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>D) Switch</p> </div>

What is the function of a transformer in an electrical system?

  • A) To store electrical energy
  • B) To increase or decrease voltage
  • C) To convert AC to DC
  • D) To measure electrical resistance

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>B) To increase or decrease voltage</p> </div>

In electrical terms, what does the abbreviation ‘kW’ stand for?

  • A) KiloWatt
  • B) KiloWatt-hour
  • C) KiloWire
  • D) KiloWattage

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>A) KiloWatt</p> </div>

Which of the following is a renewable energy source commonly used by electricians?

  • A) Coal
  • B) Natural Gas
  • C) Solar Power
  • D) Nuclear Power

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>C) Solar Power</p> </div>

What is the main purpose of an electrical panel or breaker box?

  • A) To measure electrical usage
  • B) To distribute electrical power to different circuits
  • C) To store electrical energy
  • D) To convert AC to DC

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>B) To distribute electrical power to different circuits</p> </div>

What does a voltmeter measure?

  • A) Current
  • B) Resistance
  • C) Voltage
  • D) Power

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>C) Voltage</p> </div>

Which type of current is supplied to most homes and businesses?

  • A) Direct Current (DC)
  • B) Alternating Current (AC)
  • C) Pulsating Current
  • D) Static Current

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>B) Alternating Current (AC)</p> </div>

What does the abbreviation ‘LED’ stand for in lighting technology?

  • A) Light Emitting Device
  • B) Light Emitting Diode
  • C) Low Energy Device
  • D) Light Energy Diode

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>B) Light Emitting Diode</p> </div>

In a three-phase electrical system, how many wires are typically used?

  • A) 2
  • B) 3
  • C) 4
  • D) 5

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>C) 4</p> </div>

What is the symbol for resistance in an electrical circuit?

  • A) V
  • B) I
  • C) R
  • D) P

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>C) R</p> </div>

Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points?

  • A) Ohm’s Law
  • B) Kirchhoff’s Law
  • C) Faraday’s Law
  • D) Coulomb’s Law

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>A) Ohm’s Law</p> </div>

What type of circuit allows multiple devices to be connected along the same pathway?

  • A) Series Circuit
  • B) Parallel Circuit
  • C) Complex Circuit
  • D) Open Circuit

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>B) Parallel Circuit</p> </div>

What is the main purpose of an insulator in an electrical system?

  • A) To conduct electricity
  • B) To resist electrical flow
  • C) To store electrical energy
  • D) To increase voltage

<button class=”acc”>Show Answer</button><div class=”pnl”> <p>B) To resist electrical flow</p>

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