Elec quiz 9189-031

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Elec quiz 9189-031

Email *

Name *

Which part of the Building Regulations covers electrical installation? *

1 point

a) Part J

b) Part L

c) Part G

d) Part P

Which of the following is not classed as minor works? *

1 point

a) The connection of an immersion heater with new flex cable from an existing fused spur

b) The installation of a replacement heating circulator

c) The replacement of a consumer unit

d) Fault-finding on a central heating control system

The 18th Edition IET Wiring Regulations is also known as which British Standard document? *

1 point

a) BS 7671

b) BS 6351

c) BS 5476

d) BS 6644

What fault is shown in this image? *

1 point

a) Incorrect continuity

b) Incorrect polarity

c) Reversed phases

d) Reversed neutral

At what stage should a proving unit be used? *

1 point

a) After confirming that the supply is dead

b) Before confirming that the supply is dead

c) Before and after confirming that the supply is dead

d) Before and after confirming that the current is correct

What minimum size should the earth cable be between a TN-S supply and the MET connection? *

1 point

a) 6mm2

b) 10mm2

c) 12mm2

d) 16mm2

What device is being checked in the image below? *

1 point

a) Thermistor

b) Capacitor

c) Thermocouple

d) Relay

How does the component in the image (see Question above) operate? *

1 point

a) It corrects the power factor altered by inductive loads

b) It creates a small voltage through the exchange of electrons under heating conditions

c) It increases and decreases its resistance when subjected to changes of temperature

d) It makes a contact using electromagnetism when a current is applied to its coil

Which component is designed to disconnect within 0.4 seconds if an inbalance is detected between live and neutral? *

1 point

a) MCB

b) RCD

c) Cartridge fuse

d) ECO

What piece of test equipment is the safest to use to determine the run current of a pump winding whilst operating? *

1 point

a) Clamp meter

b) Ammeter in series

c) Ammeter in parallel

d) Insulation and continuity tester

What is the most suitable flat PVC twin and earth cable size for a domestic ring main serving less than 100m2? *

1 point

a) 1.5mm2

b) 2.5mm2

c) 4mm2

d) 6mm2

What type of cable is shown in this image? *

1 point

a) Flat PVC

b) Heat-resistant flex

c) Mineral insulated

d) SWA

What are correct colours of standardised three-phase supply cable conductors? *

1 point

a) L1 – grey, L2 – black, L3 – blue

b) L1 – black, L2 – brown, L3 – red

c) L1 – brown, L2 – blue, L3 – green and yellow

d) L1 – brown, L2 – black, L3 – grey

What is the maximum number of spurs which can be made from any outlet on a ring main? *

1 point

a) None allowed

b) One spur

c) Two spurs

d) No limit, as long as the maximum area does not exceed 100m2

Looking at the shaver socket in the image, what voltage would be present between points C and D? *

1 point

a) 0V

b) 115V

c) 230V

d) 400V

Again, using the same image, what voltage would be present between points C and B? *

1 point

a) 0V

b) 115V

c) 230V

d) 400V

Which of the following methods is not an approved method to ensure isolation of a circuit? *

1 point

a) Removing and retaining the fuse

b) Locking off the switch using the padlock and retaining the key

c) Securing the isolator off with a red cable tie and warning label

d) Securing the MCB in the off position with a clamp, lock and retaining key

Is it acceptable to install a jacuzzi bath pump within restricted zones of the bathroom? *

1 point

a) Yes, providing that the pump and isolator are within zone 0 under the bath and that the

manufacturer’s instructions are followed

b) Yes, if the pump is in zone 0 under the bath, the isolator is installed outside the bathroom

and the manufacturer’s instructions are followed

c) Yes, but only within zone 2, in accordance with the manufacturer’s instructions, and the

isolator must be a pull-cord type

d) Not within a bathroom under any circumstances – both pump and isolator must be outside

zone 2

A reading of 0.2 Ohms between the live and earth terminals of an immersion heater has been found. Which option describes what has happened? *

1 point

a) Dead short – the element has blown and contacted with the copper casing

b) Open circuit – the element has overheated, blown and interrupted the circuit

c) Correct operation – a small amount of resistance is present within the element, indicating

its continuity

d) Reverse polarity – the live and neutral have been connected in reverse

What is the typical rated capacity of the suppliers fuse in the image below? *

1 point

a) 32 amp

b) 40 amp

c) 100 amp

d) 125 amp

A copy of your responses will be emailed to the address you provided.

Submit

Clear form

Never submit passwords through Google Forms.

reCAPTCHA

Privacy Terms

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy

Forms