Quiz 1 - Basic Electrical Knowledge

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The following quiz is designed to test your basic electrical knowledge. We all come into contact with electrical items on a daily basis, so a certain amount of background knowledge is required.

We don’t expect you to get 100% at the first attempt, but if you keep trying you will improve your knowledge. Take your time and read the questions thoroughly. Remember, there are no trick questions. Good luck

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Great attempt, but why not try again and see if you can improve your score…or if you got 100%, why not see if you can do it again

Why not sit one of our PAT Training Courses to help you get some hands-on experience, contact us here to find out more.

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Question 1 of 20

1. Question

What is measured in Amps (Amperes)?

Current

Electromotive Force

Resistance

Power

Correct

Current is the flow of electricity in a circuit, measured in Amps

Incorrect

Current is the flow of electricity in a circuit, measured in Amps

Question 2 of 20

2. Question

Voltage is a measure of what?

Current

Electromotive Force

Resistance

Power

Correct

Voltage is a measure of the ‘force’ of the electricity in a circuit

Incorrect

Voltage is a measure of the ‘force’ of the electricity in a circuit

Question 3 of 20

3. Question

What is Resistance in a circuit?

The opposition to current flow

A measure of current flow

A measure of electromotive force

The voltage of a circuit

Correct

Resistance in a circuit is roughly equivalent to a blockage in a pipe i.e. something which is stopping the current from flowing. Resistance is measured in Ohms (Ω)

Incorrect

Resistance in a circuit is roughly equivalent to a blockage in a pipe i.e. something which is stopping the current from flowing. Resistance is measured in Ohms (Ω)

Question 4 of 20

4. Question

Power (Watts) is a measure of what?

The rate of change of energy from one form to another

The voltage of a circuit

Current flow

The resistance of a circuit

Correct

Energy cannot be created or destroyed, it can only be changed from one form to another. The power of an appliance is the rate at which it changes electricity into other forms of energy e.g. light or heat. The higher the power, the more expensive it is to run

Incorrect

Energy cannot be created or destroyed, it can only be changed from one form to another. The power of an appliance is the rate at which it changes electricity into other forms of energy e.g. light or heat. The higher the power, the more expensive it is to run

Question 5 of 20

5. Question

What does AC stand for in electrical systems?

Alternating Current

Alternative Current

Any Circuit

Actual Circuit

Correct

Whilst we accept that electricity flows around a circuit (similar to water flowing in a pipe), in an AC circuit, the current flows down the live wire but then changes direction and flows back down the neutral. This change of direction – alternating between the live and neutral – happens 50 times a second (50Hz)

Incorrect

Question 6 of 20

6. Question

What is the cartridge fuse in a plug specifically designed to protect?

The power cord

The appliance

The user

The building

Correct

An appliance is made up of the appliance itself, the cord and the plug – the weakest (and most likely to overheat) is the cord, so the fuse is designed to blow and protect the cord should there be too much current present in the circuit. As cords are getting thinner (due to cost), selecting the correct fuse is extremely important in order to get the appropriate level of protection

Incorrect

An appliance is made up of the appliance itself, the cord and the plug – the weakest (and most likely to overheat) is the cord, so the fuse is designed to blow and protect the cord should there be too much current present in the circuit. As cords are getting thinner (due to cost), selecting the correct fuse is extremely important in order to get the appropriate level of protection

Question 7 of 20

7. Question

What is the current standard colour of the live wire in a plug?

Brown

Blue

It varies

Green & Yellow

Correct

For over 40 years the colours in our wires have been standardised as brown for live, blue for neutral and green & yellow stripes for the earth. Getting them in the wrong terminals can have serious consequences

Incorrect

For over 40 years the colours in our wires have been standardised as brown for live, blue for neutral and green & yellow stripes for the earth. Getting them in the wrong terminals can have serious consequences

Question 8 of 20

8. Question

What is the current standard colour of the neutral wire in a plug?

Blue

Brown

Green & Yellow

It varies

Correct

For over 40 years the colours in our wires have been standardised as brown for live, blue for neutral and green & yellow stripes for the earth. Getting them in the wrong terminals can have serious consequences

Incorrect

For over 40 years the colours in our wires have been standardised as brown for live, blue for neutral and green & yellow stripes for the earth. Getting them in the wrong terminals can have serious consequences

Question 9 of 20

9. Question

What is the current standard colour of the earth wire in a plug?

Green & Yellow

Brown

Blue

It varies

Correct

For over 40 years the colours in our wires have been standardised as brown for live, blue for neutral and green & yellow stripes for the earth. Getting them in the wrong terminals can have serious consequences

Incorrect

For over 40 years the colours in our wires have been standardised as brown for live, blue for neutral and green & yellow stripes for the earth. Getting them in the wrong terminals can have serious consequences

Question 10 of 20

10. Question

What happens if the terminal screws inside the plug become loose?

Nothing

The plug overheats

The socket overheats

The fuse blows

Correct

Loose connections lead to air gaps between live wires and conductive parts giving rise to arcing (sparking). This causes a build-up of heat which over time is sufficient to cause damage to the plug and surrounding area

Incorrect

Loose connections lead to air gaps between live wires and conductive parts giving rise to arcing (sparking). This causes a build-up of heat which over time is sufficient to cause damage to the plug and surrounding area

Question 11 of 20

11. Question

What is the nominal voltage available from a standard 3-pin socket outlet e.g. a wall socket?

230V

240V

220V

250V

Correct

Following harmonisation with the rest of Europe, the electrical supply in the UK is now 230V, having been lowered slightly from 240V. This was to allow appliances to be used in different countries without the need for significant changes to the appliance design.

Incorrect

Following harmonisation with the rest of Europe, the electrical supply in the UK is now 230V, having been lowered slightly from 240V. This was to allow appliances to be used in different countries without the need for significant changes to the appliance design.

Question 12 of 20

12. Question

When using an extension reel, how much cord should you pull off the reel before using it?

All of it

As much as you need

As little as possible

It doesn't matter

Correct

When current passes through a coiled wire, heat is generated but cannot dissipate into the atmosphere, leading to overheating and eventually a fire. Whenever an extension lead is used, it must be fully uncoiled and the power of the appliances plugged into it must not exceed the maximum load limit of the extension

Incorrect

When current passes through a coiled wire, heat is generated but cannot dissipate into the atmosphere, leading to overheating and eventually a fire. Whenever an extension lead is used, it must be fully uncoiled and the power of the appliances plugged into it must not exceed the maximum load limit of the extension

Question 13 of 20

13. Question

How many 3000W kettles can you run off a standard 13Amp 4-way extension lead, at the same time?

1

2

3

4

Correct

At 3000W the kettle is rated at 13Amps. As the extension lead is also rated at 13Amps, 1 kettle will take all of the available current. Adding a second kettle to the extension lead will cause an overload and the fuse in the extension lead will blow. All extension leads have a maximum load limit marked on them which must not be exceeded, otherwise overheating can occur

Incorrect

At 3000W the kettle is rated at 13Amps. As the extension lead is also rated at 13Amps, 1 kettle will take all of the available current. Adding a second kettle to the extension lead will cause an overload and the fuse in the extension lead will blow. All extension leads have a maximum load limit marked on them which must not be exceeded, otherwise overheating can occur

Question 14 of 20

14. Question

For standardisation, a lamp fitted with a 12W energy saving bulb should carry which size fuse in the plug?

3A

5A

10A

13A

Correct

Whilst there are different sizes of fuse available, for standardisation we should only be using 3A and 13A. 3A fuses are normally used in appliances of up to 700W, whereas 13A fuses are for appliances of over 700W

Incorrect

Whilst there are different sizes of fuse available, for standardisation we should only be using 3A and 13A. 3A fuses are normally used in appliances of up to 700W, whereas 13A fuses are for appliances of over 700W

Question 15 of 20

15. Question

For standardisation, which fuse should be used for a 2200W kettle?

3A

5A

10A

13A

Correct

Whilst there are different sizes of fuse available, for standardisation we should only be using 3A and 13A. 3A fuses are normally used in appliances of up to 700W, whereas 13A fuses are for appliances of over 700W

Incorrect

Whilst there are different sizes of fuse available, for standardisation we should only be using 3A and 13A. 3A fuses are normally used in appliances of up to 700W, whereas 13A fuses are for appliances of over 700W

Question 16 of 20

16. Question

When an appliance isn’t in use you should do what?

Nothing

Switch it off at the socket and unplug it

Leave the appliance switched on

Switch it off at the socket

Correct

Unplugging the appliance reduces energy use (some appliances e.g. mobile phone chargers continue to use electricity whenever the socket is turned on), as well as reducing heat build-up and potential fires

Incorrect

Unplugging the appliance reduces energy use (some appliances e.g. mobile phone chargers continue to use electricity whenever the socket is turned on), as well as reducing heat build-up and potential fires

Question 17 of 20

17. Question

What should you do prior to plugging a new appliance into the socket?

Check for transit damage on the appliance and read the instructions

Nothing

Check for damage

Check inside the plug

Correct

Many appliances are made in other countries and will have travelled, so there is a possibility damage could have been caused in transit. The instruction manual doesn’t just tell you how to use an appliance, but also where and for how long. The majority of appliances are designed for domestic use i.e. a limited amount of time, as excessive use can lead to breakdown, overheating and fires

Incorrect

Many appliances are made in other countries and will have travelled, so there is a possibility damage could have been caused in transit. The instruction manual doesn’t just tell you how to use an appliance, but also where and for how long. The majority of appliances are designed for domestic use i.e. a limited amount of time, as excessive use can lead to breakdown, overheating and fires

Question 18 of 20

18. Question

Who is responsible for the safety of electrical equipment on a daily basis?

The equipment user

The manufacturer

The retailer

Nobody

Correct

Damage and faults can occur at anytime, so it is down to the person using the equipment to look for potential issues and report them

Incorrect

Damage and faults can occur at anytime, so it is down to the person using the equipment to look for potential issues and report them

Question 19 of 20

19. Question

Which one of the following pairs of fuses is correct?

Correct

Since harmonisation, plug fuses in the UK have been of set colours – 3Amp fuses are red whilst 13Amp fuses are brown. All of the other fuses currently available (1A, 2A, 5A, 7A and 10A) are black. All plug fuses should carry the correct British Standard number BS1362

Incorrect

Since harmonisation, plug fuses in the UK have been of set colours – 3Amp fuses are red whilst 13Amp fuses are brown. All of the other fuses currently available (1A, 2A, 5A, 7A and 10A) are black. All plug fuses should carry the correct British Standard number BS1362

Question 20 of 20

20. Question

Which of the following BS1363 plugs is correct?

Correct

There are many aspects of a standard BS1363 plug we need to be aware of, otherwise the plug may not be safe. Whilst most people notice the incorrect wiring in a plug, not everyone sees the missing the cord grip.

Incorrect

There are many aspects of a standard BS1363 plug we need to be aware of, otherwise the plug may not be safe. Whilst most people notice the incorrect wiring in a plug, not everyone sees the missing the cord grip.

Basic PAT Testing Quiz

The following quiz goes into more detail surrounding In-service Inspection & Testing of Electrical Equipment (PAT Testing) and starts to put a few technical ideas and terms into the mix.

Much of what you see may be new to you, so we don’t expect you to pass first time, but the reason for the correct answer is displayed after each answer If you have a few attempts you will start to understand it a bit more.

Don’t expect it to be easy! PAT Testing is a technical subject involving physical, engineering and mathematical principals

Quiz 2 - PAT Testing Basics

Time limit: 0

Quiz-summary

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Information

The following quiz is designed to test your existing subject, background and general knowledge.

Please don’t expect it to be easy – it’s not!! We don’t expect you to get 100% at the first attempt, but if you keep trying you will improve your knowledge. Take your time and read the questions thoroughly. Many of the answers can be found on this website.

Good luck

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Great attempt, but why not try again and see if you can improve your score…or if you got 100%, why not see if you can do it again

If you want to find out more about sitting on one of our courses please fill in the contact form here

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20

Answered

Review

IET Code of Practice for In-service Inspection and Testing of Electrical Equipment

The IET are widely seen as the governing body of the PAT Testing industry and for many years have published a code of practice. The latest version is the 4th Edition which was launched in November 2012 and contains a large amount of general information regarding PAT Testing and related subjects in the workplace.

Anyone who is serious about PAT Testing (either as a contractor or in-house) should have a copy of this book to refer to whenever necessary.

HSE Maintaining portable electric equipment in low-risk environments

Over the years, the amount of PAT Testing being carried out has increased and in some cases is out of control. A study by the HSE in 2012 identified that in some work environments, inspection and testing of electrical equipment (PAT Testing) can be kept to a minimum, as the associated risks are minimal.

This document helps to describe the typical PAT Testing requirements for a low-risk environment e.g. an office.