Workbook, Heavy Duty Truck Systems, 6E
Chapter Thirteen – Answer Key
1. In which of the following applications would you be more likely to find a wet line kit?
2. Which of the following substance is NOT a fluid at ambient summer temperatures?
3. The science of moving liquids to transmit energy such as the principle used in a torque
converter is known as:
4. Who first said these words: Pressure applied to a confined liquid is transmitted in all
directions with equal force?
5. Which of the following values is exactly equivalent to an atmospheric pressure value of
14.7 psi?
6. Technician A says that 29.9 inches (760 mm) of Hg (mercury) is approximately
equivalent to 1 bar (metric unit of atmosphere). Technician B says that gauge pressure
has its zero point when subjected to atmospheric pressure at sea level. Who is correct?
7. Technician A says that any single-acting hydraulic cylinder can exert force only on an
outward stroke. Technician B says that double-acting hydraulic cylinders can exert force
either inward or outward. Who is correct?
8. What is a good example of an open-center, truck hydraulic circuit?
9. What is the usual method of rating truck hydraulic pump performance capability?
10. Which of the following hydraulic oils has an approximate flow rating to ISO 32 rated oil?