electrical ppt 4

What is another name for a radial circuit?

• Power circuit

• Series circuit

• Parallel circuit

• Loop circuit

What size PVC cable is used in an A3 radial circuit?

• 1.0mm²

• 1.5mm²

• 2.5mm²

• 4.0mm²

What is the minimum live conductor cross-sectional area for copper conductor thermoplastic or thermosetting insulated cables in an A2 radial circuit?

• 2.5mm²

• 4mm²

• 1.5mm²

• 3mm²

What is the maximum floor area served by an A1 ring circuit?

• 50m²

• 75m²

• 100m²

• 125m²

What is the minimum live conductor cross-sectional area for copper conductor mineral insulated cables in an A3 radial circuit?

• 1.5mm²

• 2.5mm²

• 4mm²

• 3mm²

What is the significance of using a 30A or 32A circuit protective device in a ring main?

• It prevents overheating

• It reduces voltage

• It increases current

• It enhances signal strength

What is the advantage of using a ring main circuit in domestic heating?

• Reduced installation cost

• Increased power supply reliability

• Enhanced lighting quality

• Improved internet speed

What supply current can modern electric showers require?

• 30A

• 35A

• 40A

• 45A

What is the significance of the indicator lamp in the shower circuit?

• Indicates water flow

• Indicates power status

• Indicates temperature

• Indicates pressure

What is the role of the 'Stop' button in the motor circuit?

• To stop the motor

• To start the motor

• To increase motor speed

• To decrease motor voltage