Question

30. The diagram in Fig. 4.12 shows a device which makes
use of the principle of transmission of pressure.
(i) Name the parts labelled by the letters X and Y.
(ii) Describe what happens to the valves A and B and
to the quantity of water in the two cylinders when
the lever arm is moved down.
(iii) Give reasons for what happens to the valves A
and B in part (ii).
(iv) What happens when the release valve is
opened?
(v) What happens to the valve B in cylinder P when
the lever arm is moved up ?
(vi) Give a reason for your answer in part (v).
(vii) State one use of the above device.​

Answer 1

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