GMJ 6189 electrical quiz 3

The provision and use of work equipment regulations requires equipment used on a construction site to be maintained in good order. On whom is this duty placed?

• The user

• The employer

• The site foreman

• The site manager

Which of the following activities would not result in the issue of a minor electrical installation works certificate?

• Replacing an existing consumer unit

• Adding a fused connection unit to an existing circuit

• Replacing a damaged socket outlet

• Replacing central heating control wiring

What type of electrical supply would be supplied to a typical domestic dwelling?

• 230 V single phase a.c

• 240 V single phase d.c

• 400V three phase- wire a.c

• 400V three phase four wire a.c

What is the purpose of providing a consumer unit at the installation intake point of a dwelling?

• So that the installation can be divided into circuits

• So that the installation may function without the meter recording usage

• So that under voltage protection is provided

• So that over voltage protection is provided

What is the maximum recommended overcurrent protective device rating for a ring final circuit?

• 16 amps

• 20 amps

• 32 amps

• 45 amps

What type of cable would be most suitable to supply a domestic immersion heater?

• 60 degree thermoplastic flexible cable

• 70 degree thermoplastic flat profile cable

• 90 degree thermosetting armoured cable

• 90 degree thermosetting rubber cable

What type of equipment is represented by the symbol shown?

• Class I equipment

• Class II equipment

• Class III equipment

• SELV equipment

A relay is an electromechanical device designed to carry out which of the following functions?

• Opening and/or closing electrical contact

• Switching off a circuit if overloaded

• Protecting electronic components from over voltage surges

• Amplifying or reducing voltages within an electronic circuit

What type of board do equipment manufacturers typically mount electronic components on?

• Tag board

• Printed circuit board

• Matrix board

• Strip circuit board

Which one of the following protective devices can safely interrupt the highest protective fault current?

• BS 3036 re wireable fuse

• BS 88 high breaking capacity fuse

• BS 1362 cartridge fuse

• BS EN 60898 circuit breaker type D