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Block 8 Quiz 1

Quiz 1 ( Q2 )

QuestionAnswer
Skydrol® is dyed ______________ in color? Purple
Depressurization of the hydraulic system is NOT necessary when servicing closed hydraulic components. False
In the absence of a specific replacement instructions, a recommended service life of return filters are: 1,500 hours
Pascal's Law states that pressure applied to any part of a confined liquid is transmitted with undiminished intensity to every other part. True
What is viscosity in reference to aircraft hydraulic systems. A measure of a hydraulic fluid's internal resistance to flow.
6. The three principal categories of hydraulic fluids are: (This question has multiple answers) Phosphate esters, Polyalphaolefins, Minerals
7. What mineral-based hydraulic fluid can be used as a rust-inhibitor alternative to MIL-H-5606? MIL-H-6083
8. Aircraft hydraulic systems designed around Skydrol® fluids should be virtually trouble-free if properly serviced. True
9. What are the two general types of contamination found within hydraulic systems? abrasives and non abrasives
10. During a routine contamination check, hydraulic fluid that appears to be visibly clean is good/usable fluid. False
11. Skydrol® is a registered trade name of which company? Monsanto Chemical Co.
12. Which of the following seals is not compatible with Skydrol®? neoprene and Buna-N
13. Hydraulic operations are roughly ___________ percent efficient, with _______________ loss due to friction. 100, negligible
14. MIL-H-5606 is dyed ______________ in color? Red
15. In addition to viscosity, what are three important characteristics of hydraulic fluids that manufactures take into account? fire point, flash point, and chemical stability
16. One of the main advantages of Skydrol® is its ___________________ wide operating temperatures.
17. When performing a "clean cycling" of a hydraulic system suspected of contamination, a hydraulic ground power unit (HGPU) should be used to clean the system. False
18. When taking hydraulic samples for testing, always drain ______________ of fluid before taking the tested sample. 1 pint
19. System operating pressure may vary from a couple hundred PSI in small aircraft and rotorcraft to _____ in large transports. 5,000 psi
20. Which hydraulic fluid is polyalphaolefin based? MIL-H-83282
Created by: sampizzuto
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