HW - Electrical Supply

What is the use of 400V AC operating voltage?

• Damp conditions

• General site voltage

• Domestic and site offices

• Fixed machinery

What is the typical voltage range for battery-operated tools?

• 12-18 volts

• 1-5 volts

• 50-100 volts

• 200-240 volts

What type of transformer is used for 110V single phase AC?

• Step-down transformer

• Step-up transformer

• Isolation transformer

• Autotransformer

It is dangerous to work with electricity in wet conditions because:

• Water is a good conductor of electricity.

• Water insulates electrical currents.

• Wet conditions prevent electrical flow.

• Electricity is less powerful in water.

You should be cautious of what regarding hidden cables in walls and floors?

• Accidental drilling or nailing into them

• Their color and material

• Their length and thickness

• Their brand and manufacturer

The Electricity at Work Regulations 1989 requires what regarding electrical current disconnection?

• Immediate disconnection in case of fault

• Regular maintenance checks

• Use of insulated tools

• Training for all employees

What are some potential consequences of critical faults in plumbing?

• Water damage to property

• Increased water bills

• Mold growth

• All of the above

Which of the following is a potential consequence of critical faults in plumbing?

• Electrocution

• Water leakage

• Increased water pressure

• Noise pollution

What is a common cause of critical faults related to workmanship?

• bad workmanship

• excellent planning

• high-quality materials

• advanced technology

Can a home owner be talked to for identifying critical faults?

• Yes, a home owner can be talked to for identifying critical faults.

• No, a home owner cannot be talked to for identifying critical faults.

• It depends on the situation.

• Only if the home owner is available.