Electrical Fundamentals Assessment

What is the first step in electrical safety practices?

• Ignore warning signs around electrical equipment.

• Understand the electrical system and its components.

• Use water to cool down overheated wires.

• Work on live circuits without protective gear.

Define the difference between AC and DC current.

• AC reverses direction periodically; DC flows in one direction only.

• AC is always safer than DC.

• AC is used in batteries while DC is used in power plants.

• DC can be used for long-distance transmission.

Identify the component that stores electrical energy in an electric field.

• Inductor

• Transformer

• Resistor

• Capacitor

What tool is commonly used to measure voltage?

• Voltmeter

• Ammeter

• Ohmmeter

• Multimeter

Explain the purpose of a circuit breaker.

• To increase the voltage in electrical circuits.

• To provide a constant flow of electricity regardless of demand.

• To enhance the efficiency of electrical appliances.

• The purpose of a circuit breaker is to protect electrical circuits from overloads and short circuits.

What is the function of a resistor in a circuit?

• To amplify the current in a circuit.

• The function of a resistor in a circuit is to limit current and control voltage.

• To create a short circuit for safety.

• To store electrical energy for later use.

How do you safely disconnect a circuit before working on it?

• Turn off the power, test for voltage, and disconnect wires safely.

• Leave the circuit powered on and start working immediately.

• Use a metal tool to disconnect the wires without precautions.

• Only check for voltage after disconnecting the wires.

What is the unit of measurement for electrical resistance?

• ohm

• watt

• ampere

• volt

Identify a common application of a transformer.

• Signal amplification

• Data transmission

• Power distribution

• Voltage regulation

What is the primary difference in the flow of electrons between AC and DC?

• AC has a constant flow of electrons.

• DC reverses direction periodically like AC.

• DC flows in both directions like AC.

• The primary difference is that DC has a unidirectional flow of electrons, while AC has a bidirectional flow that reverses periodically.