The Voltage of the Mains

What is the main difference between AC and DC voltage?

• The direction flow

• Frequency of the current

• Color of the wires

Why is it important to follow safety precautions when dealing with high voltage?

• To encourage risk-taking behavior

• To increase energy efficiency

• To prevent electric shock, burns, or death.

• To make the process more time-consuming

How can you measure voltage using a multimeter in The wall outlets ?

• Listen for the sound frequency of the circuit

• Connect the multimeter to the live wire and the neutral wire or ground

• Measure the temperature of the circuit

• Count the number of components in the circuit

What is the standard voltage of a wall outlet in most households?

• 250 volts

• 210 volts

• 330 volts

• 220 volts

What are some dangers associated with the electricity from the mains?

• Electric shock, electrical fires, short circuits

• Electricity overload

• Voltage fluctuations

• Power outage

What is the purpose of a circuit breaker in an electrical system?

• To automatically interrupt electrical flow in case of a fault or overload.

• To increase energy efficiency in the system

• To provide additional power to the system

• To regulate the voltage in the system

How does a differential circuit breaker differ from a regular circuit breaker?

• A differential circuit breaker is more expensive than a regular circuit breaker due to its advanced technology.

• A differential circuit breaker is used for residential applications, while a regular circuit breaker is used for commercial applications.

• A differential circuit breaker detects ground faults, while a regular circuit breaker protects against overcurrents and short circuits.

• A differential circuit breaker protects against overcurrents, while a regular circuit breaker detects ground faults.

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

• The function of a fuse in an electrical circuit is to increase the current flow.

• The function of a fuse in an electrical circuit is to amplify the power.

• The function of a fuse in an electrical circuit is to regulate the voltage.

• The function of a fuse in an electrical circuit is to protect the circuit from overcurrent by breaking the circuit.

Why is protection important when working with high voltage?

• To make the work environment more comfortable

• To increase productivity

• To prevent electric shock, burns, and other serious injuries.

• To save money on protective gear

What precautions should be taken when dealing with the voltage of the mains?

• Wearing metal jewelry while working with mains voltage

• Precautions such as wearing insulated gloves, using insulated tools, ensuring the power is turned off before working, and following proper safety procedures should be taken.

• Using wet hands when handling mains voltage

• Ignoring safety procedures and guidelines when dealing with mains voltage