1) FIGURE 3 shows a hydraulic circuit.
(a) State the name and purpose of the components shown in the circuit diagram.
(b) Explain the operation of this circuit.
(c) Explain the limitations of this circuit in terms of ‘speed control'.
2) Modify the design of the circuit shown in FIGURE 3 and draw a circuit diagram to provide rotary actuation in both directions using a single direction pump (to replace the bi-directional pump) and providing a means of preventing over-speeding in the case of an overhauling load in both directions.