HYDRAULIC ACTUAL EXAM TEST BANK QUESTIONS WITH REVISED AND UPDATED ANSWERS
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Course
HYDRAULIC ACTUAL
Institution
HYDRAULIC ACTUAL
HYDRAULIC ACTUAL EXAM TEST BANK QUESTIONS WITH REVISED AND UPDATED ANSWERS
(8417) Which of the following is adversely affected by atmospheric humidity if left unprotected?
1. MIL-H-5606 hydraulic fluid.
2. Skydrol hydraulic fluid.
3. None of the above. - Answer-2
(8425) Characteristics of M...
HYDRAULIC ACTUAL EXAM TEST
BANK QUESTIONS WITH REVISED
AND UPDATED ANSWERS
(8417) Which of the following is adversely affected by atmospheric humidity if left
unprotected?
1. MIL-H-5606 hydraulic fluid.
2. Skydrol hydraulic fluid.
3. None of the above. - Answer-2
(8425) Characteristics of MIL-H-7644 hydraulic fluid are - Answer-blue color, vegetable
base, will burn, natural rubber seals.
(8423) Where can information be obtained about the compatibility of fire-resistant
hydraulic fluid with aircraft materials? - Answer-Fluid manufacturer's technical bulletins.
(8431) (1) Materials which are Skydrol compatible or resistant include most common
aircraft metals and polyurethane and epoxy paints.
(2) Skydrol hydraulic fluid is compatible with nylon and natural fibers.
Regarding the above statements, - Answer-both No. 1 and No. 2 are true.
(8415) (1) When servicing aircraft hydraulic systems, use the type fluid specified in the
aircraft manufacturer's maintenance manual or on the instruction plate affixed to the
reservoir or unit.
(2) Hydraulic fluids for aircraft are dyed a specific color for each type of fluid.
Regarding the above statements, - Answer-both No. 1 and No. 2 are true.
(8446) If two actuating cylinders which have the same cross-sectional area but different
lengths of stroke are connected to the same source of hydraulic pressure, they will exert
- Answer-equal amounts of force and will move at the same rate of speed.
Hydraulic Fluids - Answer-Vegetable-base: castor oil and alchohol, not interchangeable,
dyed blue, rubber seals, flushed with alcohol, flammable.
Mineral-base: most widely used in general aviation aircraft today, kerosene-type
petroleum product, dyed red, flushed with naptha, varsol or Stoddard solvent.
Neoprense seals and hoses, flammable
Phosphate-ester base: thermoplastic resins tend to be softened by these fluids
(8441) Excluding lines, which components are required to make up a simple hydraulic
system? - Answer-Pump, reservoir, selector valve, and actuator.
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