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a b c .
d e f .

d Complete the following phrases from the descriptions using adjectives based on the
words in brackets.
1 ... there are circular pins for live and neutral, (circle)
2 ...the earth slot’s got a flat base with one side over to form a
semi-circle, (round)
3 This one has blades for live, neutral and earth ... (rectangle)
4 ... it has a slot to receive the earth pin. (cylinder)
5 ...the pins are arranged in configuration, (line)
6 ... they're laid out in configuration, (triangle)

e 3.3 Listen and underline the stressed syllable in each of the following words.
rectangle rectangular triangle triangular
cylinder cylindrical line linear

3a 3 .4► Read longer description from the meeting. Which picture (a-f) in Exercise 2c
does Erin describe?

Erin: In this configuration, there’s a circular slot at the top. It’s obviously a blind hole, it
doesn’t go right through. And that’s designed to receive the earth pin, which is mounted on the
face of the socket. Then there are two plastic ridges, one on either side of the plug casing, and
they slot into corresponding grooves at each side of the socket. In addition, the centre of the
socket is recessed. So rather than being flush with the front of the socket, on the same face, the
circular area that receives the plug is set back from the surrounding casing, in a recess about
15mm deep. The live and neutral sockets are also equipped with covers, just inside the opening.
These covers only open when pressure is applied to both by the two pins of the plug
simultaneously. So we need to look at the advantages of this configuration ...
b Complete the following extracts from the description using the correct form of the words
in the box.
flush with groove hole pin recess ridge set back

1 ... there’s a circular slot at the top. It's obviously a blind hole , it
doesn’t go right through.
2 ... there are two plastic , one on either side of the plug

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