MECHATRONICS FINAL EXAM QUESTIONS AND
ANSWERS GUARANTEED SUCCESS
In hydraulic systems, the power transmission medium is ____________________
pressurized hydraulic fluid
If control of the pressurized fluid flow is done by electrical means, then they are called
________________________________________
electrohydraulic systems
Also called hydro-mechanical system if
control of the fluid is done by a combination of mechanical and hydraulic mechanisms
Steps in an electronically controlled hydraulic system:
1. Operator input devices are connected to sensors which
2. generate the command signal to the electronic control module which
3. then controls the valves and pumps/motors
,The 8 main components of a EH system are:
1. engine or electric motor
2. pump, along with oil reservoir, filter, heat heat exchanger, relief valve
3. main valve
4. hydraulic cylinder or motor
5. sensors
6. electronic control module
7. operator input devices
8. other items, such as accumulators, safety or special function valves
hoses
1. engine or electric motor
(mechanical power source)
2. pump
(mechanical or hydraulic power conversion)
3. main valve
(for controlling, 'metering', the flow into the actuator
4. hydraulic cylinder or motor
, actuator
5. sensors
(position, velocity, pressure, flow rate)
6. electronic control module
(ECM)
7. operator input devices
(connected to integrated sensors which are then connected to the ECM)
8. other items
(such as accumulators, safety or special function valves, hoses)
Hydraulic systems deal with the supply and control of fluid pressure, flow rate and flow
direction.
True
The mechanical power source (usually an internal combustion engine in mobile
equipment or an electrical induction motor in industrial applications), hydrualic pump,
and reservoir from the so called ________________________________________
hydraulic power supply unit
ANSWERS GUARANTEED SUCCESS
In hydraulic systems, the power transmission medium is ____________________
pressurized hydraulic fluid
If control of the pressurized fluid flow is done by electrical means, then they are called
________________________________________
electrohydraulic systems
Also called hydro-mechanical system if
control of the fluid is done by a combination of mechanical and hydraulic mechanisms
Steps in an electronically controlled hydraulic system:
1. Operator input devices are connected to sensors which
2. generate the command signal to the electronic control module which
3. then controls the valves and pumps/motors
,The 8 main components of a EH system are:
1. engine or electric motor
2. pump, along with oil reservoir, filter, heat heat exchanger, relief valve
3. main valve
4. hydraulic cylinder or motor
5. sensors
6. electronic control module
7. operator input devices
8. other items, such as accumulators, safety or special function valves
hoses
1. engine or electric motor
(mechanical power source)
2. pump
(mechanical or hydraulic power conversion)
3. main valve
(for controlling, 'metering', the flow into the actuator
4. hydraulic cylinder or motor
, actuator
5. sensors
(position, velocity, pressure, flow rate)
6. electronic control module
(ECM)
7. operator input devices
(connected to integrated sensors which are then connected to the ECM)
8. other items
(such as accumulators, safety or special function valves, hoses)
Hydraulic systems deal with the supply and control of fluid pressure, flow rate and flow
direction.
True
The mechanical power source (usually an internal combustion engine in mobile
equipment or an electrical induction motor in industrial applications), hydrualic pump,
and reservoir from the so called ________________________________________
hydraulic power supply unit
