Domestic Electrics

Whose instructions should be followed according to the list of domestic electrics?

• The manufacturer's instructions

• The user's instructions

• The electrician's instructions

• The retailer's instructions

What is the voltage for a single phase AC in low voltage?

• 230v

• 110v

• Both A and B

Fill in the blank: The extra low voltage for safety includes 24v DC, 18v DC, and ____.

• 12v DC.

• 15v DC.

• 30v DC.

• 48v DC.

Which of the following is not considered extra low voltage for safety?

• 24v DC

• 18v DC

• 230v AC

Showers are related to domestic electrics in plumbing because:

• they use electricity to heat water.

• they are connected to the main water supply.

• they require regular maintenance.

• they are part of the bathroom fixtures.

Boilers in domestic electrics used in plumbing are primarily responsible for:

• Heating water for domestic use

• Cooling water for air conditioning

• Filtering water for drinking

• Pumping water to higher floors

Electricity is a form of energy, and is produced in a variety of ways. Which of the following methods can create static electricity?

• Heat applied to dissimilar metals

• Friction between materials

• Pressure on crystals

• Coils in a magnetic field

What is the frequency of AC in the UK?

• 60Hz

• 50Hz

• 40Hz

• 30Hz

In a domestic property, battery operated tools may use which of the following voltages?

• A) 240v

• B) 110v

• C) 24v, 18v, or 12v DC

• D) 48v DC

What should you be careful about when dealing with a radial circuit?

• Overloading the circuit

• Using the correct wire gauge

• Ensuring proper grounding

• All of the above