Chapter 5 Fundamentals of Engine Construction and Operation 91
7. Technician A says that overhead camshafts are
usually driven by a belt. Technician B says that in
cam-in-block, overhead valve engines, the camshaft
is usually directly driven by two meshing gears. Who
is correct?
(A) A only.
(B) B only.
(C) Both A & B.
(D) Neither A nor B.
8. Most vehicle manufacturers recommend a ______
mix of water and antifreeze.
(A) 10:90
(B) 50:50
(C) 30:70
(D) 80:20
9. Oil screens on the inlet to the oil pump are to
remove:
(A) large particles of dirt or metal.
(B) small particles of dirt or metal.
(C) chemical contaminants.
(D) particles the oil filter does not catch.
10. Technician A says that engine oil pumps are
constant-displacement pumps. Technician B says
that the engine oil pan serves as the reservoir for
engine oil. Who is correct?
(A) A only.
(B) B only.
(C) Both A & B.
(D) Neither A nor B.