Lesson 1
PRACTICE EXERCISE
1.
The upper part of the combustion chamber is formed by the
a.
oil pan.
b.
cylinder head.
c.
piston head.
2.
In a four-stroke-cycle engine, both valves are closed when the piston is on which stroke?
a.
Intake
b.
Compression
c.
3.
What directs the airflow around the cylinders of an air-cooled engine?
a.
Fan
b.
Fins
c.
Baffles
4.
The bottom ring on a piston is used to
a.
remove lubricant from the cylinder wall.
b.
prevent compression leakage.
c.
deposit a thin film of oil between the piston and cylinder.
5.
An OHC engine is an engine in which the
a.
cylinders are horizontal-opposed.
b.
valve mechanism includes pushrods.
c.
camshaft is mounted on the cylinder head.
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