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WorksheetsMid term Hydraulic
Total questions: 146
Worksheet time: 4hrs 22mins
Hydraulic systems use ________ to transfer force from one point to another.
Air
Liquid
Solid
Gas
Pneumatics is concerned with a system that uses:
Oil
Expanded air
Compressed air
Electricity
Air is compressible and liquid is incompressible.
True
False
If an object is compressible it can be squeezed to fit into a smaller space than it normally does.
True
False
Select the machine which does not use hydraulics.
What is a hydraulic system?
A system that uses a liquid under pressure to transmit a force to do work.
A system that uses a gas under pressure to transmit a force to do work
Pascal's law.
It uses water to push an object.
Where can you look on your car to see a good example of a basic piston-driven hydraulic system?
The power steering system
The instrument panel
The brake system
The radio system
Which one of the following is an example of a hydraulically operated machine?
A wheel barrow
A laptop computer
A bulldozer
A vacuum cleaner
What is one of the best places to get up close with the large hydraulic machines?
At the local mall
A deli
A construction site
Farmers market
Which of the following sentence is true?
Gases are easy to squish
Liquids are easy to squish
A ________ is a sliding plug that fits closely inside the bore of a cylinder
A jack
A piston
A valve
What does Pascal's law state?
When you apply a small amount of pressure to a compressed fluid, it will send that pressure nowhere.
When you apply pressure to a confined fluid, the fluid will send that pressure out in all directions at the same rate.
When you apply a large amount of pressure to an object, it will float.
When you use a fluid to apply pressure, the pressure will release.
Which one is an example of a pneumatic system?
How are a hydraulic system and pneumatic system different?
One is more powerful than the other.
One uses a gas, and the other uses a liquid.
One has a pump, and the other does not.
One has more valves than the other.
A bicycle pump is an example of a ______________________.
Valve.
Pneumatic system.
Hydraulic system.
Piston.
It's important for a hydraulic system to contain what?
Air bubbles
No air bubbles
Compressible fluid
Compressible gas
The great thing about hydraulic systems is that the pipe connecting the two cylinders can be__________
Disconnected, yet still operate
Any length and shape
Filled with air
All of the above
Hydraulics is branch of science and engineering concerned with the use of liquids to perform___________
Electrical task
Magnetic task
Mechanical task
Electronic task
Which of the following statements explains fluid power.
Fluid power is the method of using pressurized fluid to transmit energy
Fluid power is the method of using pressurized fluid to transmit motion.
Fluid power is the method of using pressurized fluid to transmit machines
Fluid power is the method of using pressurized air to transmit energy
What are the two branches of Fluid Power.
Pneumatics and Hydrogen
Pneumatics and Horsepower
Pneumatics and Hydraulics
Pneumatics and Horoscops
Hydraulic systems use ________ to transfer force from one point to another.
Air
Liquid
Solid
Gas
Pneumatic systems use compressed _________ to transfer force.
Air
Liquid
Solid
Gas
Air is compressible and liquid is incompressible.
True
False
If an object is compressible it can be squeezed to fit into a smaller space than it normally does.
True
False
If an object is in-compressible it can also be forced to fit into a space smaller than it usually occupies.
True
False
An example of a compressible object is a _______________ & an example of an in-compressible object is a ______________
Plastic bottle & Water
Iphone & Coca Cola
Land cruiser & Oil
All of them are examples
Select the machine which does not use hydraulics.
All industrial hydraulic systems consist of the following basic components:
Power input device
Control Device
Liquid
Conductors
Power Output device
Hydraulic jack
Power input device
Control Device
Liquid
Power Output device
Power input device
Control Device
Liquid
Conductors
Power Output device
Power input device
Control Device
Power Output device
What is a hydraulic system?
A system that uses a liquid under pressure to transmit a force to do work.
A system that uses a gas under pressure to transmit a force to do work
Pascal's law.
It uses water to push an object.
A pneumatic valve is defined as a “5/3-valve”. What do the numbers 5/3 mean in this definition?
The valve has a port for the exhaust.
The valve has 5 switching positions and 3 ports.
The valve has a neutral position and 4 other switching positions.
The valve has 5 ports and 3 switching positions.
The valve has 5 ports for work conductions and a neutral position.
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 holds the piston in position.
It controls the speed motion of the cylinder during extension and retraction.
What is the part labeled "A" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "B" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "C" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "D" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "E" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "G" in the diagram.
Flow Control Valve
Right-angle check valve
Cylinder
Maximum pressure
Directional Valve
What is the part labeled "H" in the diagram.
Flow Control Valve
Right-angle check valve
Cylinder
Maximum pressure
Directional Valve
The fluid power uses two types of systems: Hydraulic and Pneumatic
True
False
Hydraulic systems use ________ to transmit power
Compressed Gases
Liquids
Oil Only
Air Only
Hydraulic systems can generate low to large power
True
False
It is difficult to control Hydraulic systems and it is not accurate
True
False
Hydraulic systems should
Not be used
be maintained continuously
be connected to battery
Hydraulic systems follow ______ law
Bernoly
Ohm
Pascal
Volt
A simple common example of hydraulic system is:
Car Jack
Water transmission system
Fuel Refinery
Cooling Tower
Below is/are the basic components of the hydraulic system EXCEPT:
Pump
Compressor
Filter
Directional Control Valve
Choose advantages in Hydraulic System
Hard to produce, transmit, store, regulate and control and maintain
Easy maintanance
Impossible to generate high gain in force and
No noise and vibration produced
Function of filter in hydraulic system is...
to create the flow of oil through the system
pumping action to internal gear pumps
transforms hydraulic energy into rotary mechanical energy
to arrest and purify the oils and thus get rid those unwanted materials
List functions of check valve
to block the reverse flow of oil in a fluid power circuit
allows free air flow in both direction and the opposite
to allow the reverse flow of oil
all answer given is correct
Give function of Relief Valve
Protect the system from excess pressure
a relief valve opens and by passess fluid when pressure exceed
valve closes again when pressure falls
All answer given
What is below correct about accumulator
pressure storage reservoir
works as a pressure storage system
is an energy storage device
all answer given
Hydraulic flow control valves are expected to control all below EXCEPT:
Stopping of Flow
Pressure
Flow quantity
Direction of Flow
Pressure control valve performs the following function:
Limiting maximum system pressure
Gives direction of flow
Control flow of fluid
control flow media pressure
Which below function of Tank in hydraulic system
energy storage
works to keep the hydraulic fluid or oil
push the oil to the system
control the flow of fluid
State disadvantages of a Hydraulic System
No leakage in hydraulic system
Certain systems are exposed to friendly climate and dirty atmosphere
Hydraulic element have to be machined to a high degree of precession
All answer are correct
The hydraulic symbol shown in figure 1 is called
Single acting cylinder
Hydraulic motor
Double acting cylinder
Direction control valve
To supply sufficient flow of hydraulic system oil is called
Relief valve
Hydraulic pump
Hydraulic cylinder
Check valve
A fluid used in hydraulic system for transmitting power is called
Diesel
Kerosene
Petrol
Oil
Study of liquid in motion and pressure in pipes and cylinder is called
Reservoir
Motor
Filter
Hydraulic
Control liquid direction, pressure, and flow rate are called
Control valve
Hydraulic pump
Hydraulic lines
Actuator
Hydraulic systems use ________ to transfer force from one point to another.
Air
Liquid
Solid
Gas
Pneumatics is concerned with a system that uses:
Oil
Expanded air
Compressed air
Electricity
Air is compressible and liquid is incompressible.
True
False
If an object is compressible it can be squeezed to fit into a smaller space than it normally does.
True
False
Select the machine which does not use hydraulics.
What is a hydraulic system?
A system that uses a liquid under pressure to transmit a force to do work.
A system that uses a gas under pressure to transmit a force to do work
Pascal's law.
It uses water to push an object.
Where can you look on your car to see a good example of a basic piston-driven hydraulic system?
The power steering system
The instrument panel
The brake system
The radio system
Which one of the following is an example of a hydraulically operated machine?
A wheel barrow
A laptop computer
A bulldozer
A vacuum cleaner
What is one of the best places to get up close with the large hydraulic machines?
At the local mall
A deli
A construction site
Farmers market
Which of the following sentence is true?
Gases are easy to squish
Liquids are easy to squish
A ________ is a sliding plug that fits closely inside the bore of a cylinder
A jack
A piston
A valve
What does Pascal's law state?
When you apply a small amount of pressure to a compressed fluid, it will send that pressure nowhere.
When you apply pressure to a confined fluid, the fluid will send that pressure out in all directions at the same rate.
When you apply a large amount of pressure to an object, it will float.
When you use a fluid to apply pressure, the pressure will release.
Which one is an example of a pneumatic system?
How are a hydraulic system and pneumatic system different?
One is more powerful than the other.
One uses a gas, and the other uses a liquid.
One has a pump, and the other does not.
One has more valves than the other.
A bicycle pump is an example of a ______________________.
Valve.
Pneumatic system.
Hydraulic system.
Piston.
It's important for a hydraulic system to contain what?
Air bubbles
No air bubbles
Compressible fluid
Compressible gas
The great thing about hydraulic systems is that the pipe connecting the two cylinders can be__________
Disconnected, yet still operate
Any length and shape
Filled with air
All of the above
Hydraulics is branch of science and engineering concerned with the use of liquids to perform___________
Electrical task
Magnetic task
Mechanical task
Electronic task
Which of the following statements explains fluid power.
Fluid power is the method of using pressurized fluid to transmit energy
Fluid power is the method of using pressurized fluid to transmit motion.
Fluid power is the method of using pressurized fluid to transmit machines
Fluid power is the method of using pressurized air to transmit energy
What are the two branches of Fluid Power.
Pneumatics and Hydrogen
Pneumatics and Horsepower
Pneumatics and Hydraulics
Pneumatics and Horoscops
Hydraulic systems use ________ to transfer force from one point to another.
Air
Liquid
Solid
Gas
Pneumatic systems use compressed _________ to transfer force.
Air
Liquid
Solid
Gas
Air is compressible and liquid is incompressible.
True
False
If an object is compressible it can be squeezed to fit into a smaller space than it normally does.
True
False
If an object is in-compressible it can also be forced to fit into a space smaller than it usually occupies.
True
False
An example of a compressible object is a _______________ & an example of an in-compressible object is a ______________
Plastic bottle & Water
Iphone & Coca Cola
Land cruiser & Oil
All of them are examples
Select the machine which does not use hydraulics.
All industrial hydraulic systems consist of the following basic components:
Power input device
Control Device
Liquid
Conductors
Power Output device
Hydraulic jack
Power input device
Control Device
Liquid
Power Output device
Power input device
Control Device
Liquid
Conductors
Power Output device
Power input device
Control Device
Power Output device
What is a hydraulic system?
A system that uses a liquid under pressure to transmit a force to do work.
A system that uses a gas under pressure to transmit a force to do work
Pascal's law.
It uses water to push an object.
A pneumatic valve is defined as a “5/3-valve”. What do the numbers 5/3 mean in this definition?
The valve has a port for the exhaust.
The valve has 5 switching positions and 3 ports.
The valve has a neutral position and 4 other switching positions.
The valve has 5 ports and 3 switching positions.
The valve has 5 ports for work conductions and a neutral position.
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 holds the piston in position.
It controls the speed motion of the cylinder during extension and retraction.
What is the part labeled "A" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "B" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "C" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "D" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "E" in the diagram.
Reservoir
Electrical motor
Pump
Maximum pressure
Directional Valve
What is the part labeled "G" in the diagram.
Flow Control Valve
Right-angle check valve
Cylinder
Maximum pressure
Directional Valve
What is the part labeled "H" in the diagram.
Flow Control Valve
Right-angle check valve
Cylinder
Maximum pressure
Directional Valve
The fluid power uses two types of systems: Hydraulic and Pneumatic
True
False
Hydraulic systems use ________ to transmit power
Compressed Gases
Liquids
Oil Only
Air Only
Hydraulic systems can generate low to large power
True
False
It is difficult to control Hydraulic systems and it is not accurate
True
False
Hydraulic systems should
Not be used
be maintained continuously
be connected to battery
Hydraulic systems follow ______ law
Bernoly
Ohm
Pascal
Volt
A simple common example of hydraulic system is:
Car Jack
Water transmission system
Fuel Refinery
Cooling Tower
Below is/are the basic components of the hydraulic system EXCEPT:
Pump
Compressor
Filter
Directional Control Valve
Choose advantages in Hydraulic System
Hard to produce, transmit, store, regulate and control and maintain
Easy maintanance
Impossible to generate high gain in force and
No noise and vibration produced
Function of filter in hydraulic system is...
to create the flow of oil through the system
pumping action to internal gear pumps
transforms hydraulic energy into rotary mechanical energy
to arrest and purify the oils and thus get rid those unwanted materials
List functions of check valve
to block the reverse flow of oil in a fluid power circuit
allows free air flow in both direction and the opposite
to allow the reverse flow of oil
all answer given is correct
Give function of Relief Valve
Protect the system from excess pressure
a relief valve opens and by passess fluid when pressure exceed
valve closes again when pressure falls
All answer given
What is below correct about accumulator
pressure storage reservoir
works as a pressure storage system
is an energy storage device
all answer given
Hydraulic flow control valves are expected to control all below EXCEPT:
Stopping of Flow
Pressure
Flow quantity
Direction of Flow
Pressure control valve performs the following function:
Limiting maximum system pressure
Gives direction of flow
Control flow of fluid
control flow media pressure
Which below function of Tank in hydraulic system
energy storage
works to keep the hydraulic fluid or oil
push the oil to the system
control the flow of fluid
State disadvantages of a Hydraulic System
No leakage in hydraulic system
Certain systems are exposed to friendly climate and dirty atmosphere
Hydraulic element have to be machined to a high degree of precession
All answer are correct
The hydraulic symbol shown in figure 1 is called
Single acting cylinder
Hydraulic motor
Double acting cylinder
Direction control valve
To supply sufficient flow of hydraulic system oil is called
Relief valve
Hydraulic pump
Hydraulic cylinder
Check valve
A fluid used in hydraulic system for transmitting power is called
Diesel
Kerosene
Petrol
Oil
Study of liquid in motion and pressure in pipes and cylinder is called
Reservoir
Motor
Filter
Hydraulic
Control liquid direction, pressure, and flow rate are called
Control valve
Hydraulic pump
Hydraulic lines
Actuator
It applies fluid mechanics in order to generate, control and transmit power through the use of pressurized liquids.
Pneumatics
Hydraulics
Mechanics
Dynamics
It is usually an electric motor or a diesel engine that gets the hydraulic system started by powering the pump.
reservoir
prime mover
actuator
valve
Pneumatic fluids may be water-based, petroleum-based or synthetic.
True
False
Its role is to displace fluid volume against a resistant load or pressure.
diesel engine
electric motor
hydraulic pump
reservoir
In our circulatory system, what is the equivalent of hydraulic fluid?
veins and arteries
sinotrial node
left and right ventricles
blood
These are used to start, stop and direct the flow of hydraulic fluid in the system.
valves
actuators
pump
reservoir
These are used to convert hydraulic energy back to mechanical energy.
valves
actuators
pump
reservoir
It holds a volume of hydraulic fluid and helps air and moisture to be released from the fluid.
valves
actuators
pump
reservoir
Pressure is directly proportional to force.
True
False
How much is the pressure if a force of 10 Newtons is applied to a cross-sectional area of 5 m2 ?
50 Pa
2 Pa
0.5 Pa
15 Pa
When exerting a small force over a small cross-sectional area, pressure can be transmitted to create a large force over a large cross-sectional area.
True
False
How much is the force in Newtons if the pressure in a cross-sectional area of 20 m2 is 10 Pa?
2 N
10 N
200 N
30 N
