Page 44 - PNEUMATIC AND HYDRAULIC
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QUESTION 2
a) State FIVE (5) type of control valve in hydraulic system
(5 marks]
b) Hydraulic cylinders are compact and relatively simple. Show how to
troubleshoot problem in the cylinder due to external leakage, internal leakage,
creeping, sluggish operation and loose mounting.
(10 marks)
c) Illustrate the operation of piston valve in hydraulic system.
(10 marks)
QUESTION 3
a) Identify FIVE (5) characteristics of hydraulic fluid?
(5 marks)
b) Explain briefly the function of hydraulic components listed below:
i. Hydraulic Pump
ii. Accumulator
iii. Reservoir
iv. Hydraulic Motor
v. Pressure Relief Valve
(10 marks)
c) For the construction industry, heavy loads and great amount of soil or rock are
required to be transferred from one location to other location. Identify FIVE (5)
advantage of a hydraulic power system in comparison with other power system.
(10 marks)
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