Hydraulic and Pneumatic Power Systems- Ch. 8
Workbook-Questions & ANSWERS 100% RATED
CORRECT- SURE PASS!! | Newest 2025
A good hydraulic system must possess these properties: - ✔✔- must be able to flow
through all lines with minimal opposition
- incompressible
- have good lubrication properties
- inhibit corrosion
- not foam in operation
What is the internal resistance to flow of a liquid called? - ✔✔viscosity
The _____________ ______________ is the temperature at which a liquid will give off
vapor in sufficient quantity to ignite momentarily - ✔✔Flash Point
The three types of hydraulic fluid currently in use in civilian aircraft are: - ✔✔-
vegetable based
- petroleum based (mineral)
- phosphate-ester based (synthetic)
It _________ permissible to mix different types of hydraulic fluid - ✔✔is not
vegetable-based hydraulic fluid is essentially __________________ oil and
___________________ - ✔✔castor oil and alcohol
, Vegetable-based hydraulic fluid is dyed what color for identification? - ✔✔blue
The most widely used hydraulic fluid in general aviation today is? - ✔✔Skydrol
What type of hydraulic fluid is dyed red for identification? - ✔✔Mineral based, MIL-
H-5606
Synthetic hydraulic fluids were developed to provide a _____________-resistant
hydraulic fluid for use in high performance piston and turbine aircraft - ✔✔fire
What color is Skydrol? - ✔✔purple
If Skydrol is accidentally spilled, it should be immediately cleaned up using what? -
✔✔soap and water
What fluid may be used to flush hydraulic systems using vegetable-base hydraulic fluid?
- ✔✔alcohol
What fluid may be used to flush hydraulic systems using mineral-base hydraulic fluid? -
✔✔naphtha, varsol, Stoddard solvent
What fluid may be used to flush hydraulic systems using synthetic-base hydraulic fluid? -
✔✔trichloroethylene
What material must be used for seals in vegetable-based hydraulic systems? -
✔✔natural rubber
Workbook-Questions & ANSWERS 100% RATED
CORRECT- SURE PASS!! | Newest 2025
A good hydraulic system must possess these properties: - ✔✔- must be able to flow
through all lines with minimal opposition
- incompressible
- have good lubrication properties
- inhibit corrosion
- not foam in operation
What is the internal resistance to flow of a liquid called? - ✔✔viscosity
The _____________ ______________ is the temperature at which a liquid will give off
vapor in sufficient quantity to ignite momentarily - ✔✔Flash Point
The three types of hydraulic fluid currently in use in civilian aircraft are: - ✔✔-
vegetable based
- petroleum based (mineral)
- phosphate-ester based (synthetic)
It _________ permissible to mix different types of hydraulic fluid - ✔✔is not
vegetable-based hydraulic fluid is essentially __________________ oil and
___________________ - ✔✔castor oil and alcohol
, Vegetable-based hydraulic fluid is dyed what color for identification? - ✔✔blue
The most widely used hydraulic fluid in general aviation today is? - ✔✔Skydrol
What type of hydraulic fluid is dyed red for identification? - ✔✔Mineral based, MIL-
H-5606
Synthetic hydraulic fluids were developed to provide a _____________-resistant
hydraulic fluid for use in high performance piston and turbine aircraft - ✔✔fire
What color is Skydrol? - ✔✔purple
If Skydrol is accidentally spilled, it should be immediately cleaned up using what? -
✔✔soap and water
What fluid may be used to flush hydraulic systems using vegetable-base hydraulic fluid?
- ✔✔alcohol
What fluid may be used to flush hydraulic systems using mineral-base hydraulic fluid? -
✔✔naphtha, varsol, Stoddard solvent
What fluid may be used to flush hydraulic systems using synthetic-base hydraulic fluid? -
✔✔trichloroethylene
What material must be used for seals in vegetable-based hydraulic systems? -
✔✔natural rubber
