cameroon gce intermediate level mechanical technology 2

cameroon gce intermediate level mechanical technology 2

cameroon gce intermediate level mechanical technology 2

SECTION A: MECHANICAL TECHNOLOGY
Answer THREE questions from this section
1. FIGURE 1 below represents the mechanical organs of an engine.
FIGURE 1: mechanical organs of an engine
a. List all the numbered components of figure 1. (0.25X8=4 marks)
b. Give the name of the type of valve layout on figure 1 and explain its operating principles. (0.5+2=2.5 marks)
c. Low engine power output can occur due to lost of compression, list all the components of this diagram that can
cause lost of compression. (
0.5X2=1 mark)
d. Motion is always transmitted from part 1 to part 8 by using part 2. Explain why the pulley of part 1 is always
smaller than the pulley of part
8. (1 mark)
e. Explain how the forces generated during combustion are transmitted to the flywheel. (1.5 mark)
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2. The FIGURE 2A below represents the braking system of a TOYOTA CARINA E vehicle that uses a hydraulic
command system. And
FIGURE 2B represents one of the organs of the braking system.

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