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WorksheetsApplied Hydraulics & Pneumatics
Total questions: 30
Worksheet time: 15mins
Which of the following statements explains fluid power.
Fluid power is the method of using pressurized fluid to transmit motion.
Fluid power is the method of using pressurized fluid to transmit energy
Fluid power is the method of using pressurized fluid to transmit machines
Fluid power is the method of using pressurized air to transmit energy
The basic idea behind any hydraulic system is very simple: Force that is applied at one point is trasmitted to another point using________
A compressible fluid
An incompressible fluid
A cold compress
A hot compress
Where can you look on your car to see a good example of a basic piston-driven hydraulic system?
The power steering system
The brake system
The instrument panel
The radio system
Large hydraulic machines usually have these to hold the difference in the volume of oil displaced by the two sides of the cylinder
Large diameter lines
Extra piston
External reservoirs
Men with buckets
Which pump uses an impeller?
Piston pump
Vane pump
Gear pump
Non-positive-displacement pump
What pushes oil into a positive-displacement pump's inlet?
Pilot oil
Atmospheric Pressure
Case pressure
Signal pressure
Which of the following has a high volumetric efficiency?
Gear pump
Vane pump
Piston pump
All pumps have equal volumetric efficiency
During operation, where does the majority of oil travel in an external-toothed gear pump?
Between the two meshing gears
Around the outside periphery
Both A and B
Neither A nor B
Which of the following styles of pumps uses a swash plate?
Bent-axis piston pump
Rotating-cam radial piston pump
Inline axial piston pump
Rotating-piston radical piston pump
In a simple enclosed hydraulic system with pistons of different surface area, which requires the most force to move it?
The larger Piston
The smaller Piston
The force required to move each piston will be equal.
Neither can move due to incompressibility of fluid.
Which of the following is a double acting cylinder?
Identify the hydraulic component from the given symbol.
Pneumatically operated 4/2 DCV
Hydraulic operated 4/2 DCV
Solenoid operated 4/2 DCV
Pilot operated 4/2 DCV
The output force at piston B is __________ than the force input at piston A.
less than
the same as
not enough info to answer
greater than
What is the use of end position cushioning of a double-acting cylinder, as shown below?
It protects the cylinder against excessively high air pressure.
It reduces the noise of the escaped air.
It prevents a hard striking of the piston at the end positions.
It controls the speed motion of the cylinder during extension and retraction.
It holds the piston in position.
Pressure is measured in what units
Newtons
m/s
Pascals
Moles
Which is not a piston type semi rotary actuator?
Rack and Pinion
Lever Arm
Chain and Sprocket
Vane
Which type of fluid power system is controlled by oil or air
Electrical control
Electronic control
Fluid logic control
The spacing of molecules in ______ is much larger than ______.
solids, liquids
liquids, gases
solids, gases
gases, liquids
SSU is the number of seconds required for _____ml of oil to flow by its own gravity through a standard orifice.
50
40
60
55
The minimum temperature at which the hydraulic fluid will catch fire and continue to burn is called ___________
Pour point
Flash point
Fire point
Ignition point
Reynolds number, Re = μ(ρVD) , Where μ indicates
Density of fluid
Kinematic viscosity of fluid
Specific gravity of fluid
absolute viscosity of fluid
In which of the following pump, volumetric displacement is generally greater than gear pumps.
Vane pump
Piston pump
Lobe pump
Gerotor
Which is not a special type of cylinder?
Double acting
Tandem
Telescope
Tandem
In which of the pump, the delivery rate depends on the degree of offset of the rotor respect to ring.
Bent axis piston pump
balanced vane pump
Unbalanced vane pump
Swash plate piston pump
Single vane rotary actuator is limited to __________ degree of rotation and double vane to _________ degree.
100, 270
270, 100
100, 280
280, 100
Pneumatic and other power systems can support three kinds of motion; they are
Linear, reciprocating, and random motion
Linear, flowing, and rotary motion
Linear, reciprocating, and rotary motion
Linear, zigzag, and spiral motion
The scientific principle that makes hydraulic systems possible is
The fluid flow principle
Bernoulli’s principle
Pascal’s principle
Boyle’s law
5/2 way single solenoid valve has:
2 ports 2 positions
5 ports 2 positions
5 ports 5 positions
2 ports 5 positions
Centrifugal pumps transfer energy from _______
Fluid to rotor
Draft to rotor
Rotor to draft
Rotor to fluid
The hydraulic press is also known as _________ press
Pascal
Toricelli
Bernouille
Bramah
