Aux 1 Unit 5

Pumps – Displacement, Vane, Gear

With reference to positive displacement pumps:
(a) describe, with the aid of a sketch, the operation of a pulsation damper;(6)
(b) explain why some positive displacement pump types do not require pulsation dampers.(4)

1.Quiz. Study Notes

Answer

With reference to positive displacement pumps:
(a) explain the need for a relief valve, stating where it would be fitted;(5)
(b) explain when a pulsation damper may be fitted to the delivery line, stating how it works.(5)

2.Quiz. Study Notes

Answer

Describe, with the aid of a sketch, the operation of a double acting, piston type positive displacement pump.
(10)

3.Quiz. Study Notes

Answer

(a) Sketch a vane type pump, labelling ALL components. (6)
(b) Explain the operation of the pump sketched in part (a). (4)

4.Quiz. Study Notes

Answer

Describe, with the aid of a sketch, the operation of a gear pump.
(10)

5.Quiz. Study Notes

Answer

(a) State FOUR types of pumps suitable for use in a hydraulic system.(4)
(b) Explain why the pumps stated in part (a) are suitable for hydraulic systems.(6)

6.Quiz. Study Notes

Answer

(a) Explain how cavitation damage occurs within a pump.
(6)
(b) State, with reasons, TWO operational causes of increased cavitation within a pump.(4)

7.Quiz. Study Notes

Answer