Electrical Installations Quiz

What are the different types of electrical accessories used in installations?

• Chairs, tables, lamps, and rugs

• Hammers, nails, screws, and screwdrivers

• Pots, pans, knives, and cutting boards

• Switches, sockets, plugs, circuit breakers, fuses, and wiring accessories

Explain the meaning of the electrical symbols commonly used in diagrams.

• It refers to the size of the electrical components and devices

• Electrical symbols in diagrams represent the temperature of the components

• The meaning of electrical symbols refers to the different colors used in diagrams

• The meaning of electrical symbols commonly used in diagrams refers to the representation of different electrical components and devices using standardized symbols.

Calculate the resistance in a circuit if the voltage is 12V and the current is 3A.

• 6 ohms

• 4 ohms

• 8 ohms

• 2 ohms

What is the standard voltage used in homes for electrical installations?

• 300 volts

• 230 volts

• 50 volts

• 75 volts

What is the purpose of a fuse in an electrical installation?

• To prevent water damage in the installation

• To protect the electrical circuit from overcurrent or short circuit

• To regulate the voltage in the installation

• To provide lighting in the installation

Describe the function of a circuit breaker in electrical installations.

• To automatically interrupt the flow of electricity when a fault is detected

• To regulate the temperature of the electrical system

• To increase the flow of electricity when a fault is detected

• To provide a backup power source in case of a fault

Solve for the current in a circuit if the resistance is 4 ohms and the voltage is 8V.

• 6A

• 4A

• 10A

• 2A

Explain the significance of grounding in electrical installations.

• It has no significant impact on electrical installations

• It is only necessary for outdoor electrical systems

• It provides a path for fault currents to flow safely to the ground.

• It helps to increase the voltage in the circuit

What is the role of a switch in an electrical circuit?

• To cook food

• To play music

• To open or close the circuit

• To water plants

Calculate the power consumed by a device if the voltage is 120V and the current is 5A.

• 150W

• 600W

• 450W

• 300W