21-03. HYDRAULICS
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1. In hydraulic system, a shuttle valve:
2. (Refer to figure 021-26) Total number of hydraulic pumps in this hydraulic system (excluding the PTU pump) is:

3. (Refer to figure 021-01) If piston A has an area of 2 cm2 and piston B has an area of 10 cm2, when piston B moves down by 5 cm, how far will piston A have moved?

4. In a hydraulic braking system, an accumulator is pre-charged to 1.200 psi. An electrically driven hydraulic pump is started and provides a system pressure of 3.000 psi. The hydraulic pressure gauge which is connected to the gas section of the accumulator, reads:
5. Viscosity is: