ME433 Mechatronics B.E Question Bank : niceindia.com
Name of the College : Noorul Islam College of Engineering
University : Anna University
Degree : B.E
Department : Mechanical Engineering
Subject Code/Name : ME 433 – Mechatronics
Document Type : Question Bank
Website : niceindia.com
Download Model/Sample Question Paper :https://www.pdfquestion.in/uploads/niceindia.com/3028-ME_433_MECHATRONICS.pdf
NICE Mechatronics Question Paper
1. What is Mechatronics? :
The term Mechatronics is used for the integration of microprocessor control system, electrical systems and mechanical systems. Mechatronics is defined as the integration of precision mechanical & electronic control for the development of smart products & process.
Related : Noorul Islam College of Engineering XCS592 Software Project Management M.Sc Question Bank : www.pdfquestion.in/3124.html
2. What is a system? : Give an example.
A system can be considered as a box, which has an input, and an output and where it is not concerned with what goes on inside the box but only the relationship between the output and the input.
Example :
A motor may be thought of as a system, which has as its input electric power and as output the rotation of a shaft.
3. What is a measurement system? :
A measurement system can be considered as a black box, which is used for making measurements. It has as its input the quantity being measured and its output the value of that quantity.
4. Write about the sensor and give an example? :
A sensor, which responds to the quantity being measured by giving as its output a signal which is related to the quantity.
Example :
A thermocouple is a temperature sensor. The input to the sensor is a temperature and the output is an e.m.f. which is related to the temperature value.
5. Write about the signal conditioner? :
A signal conditioner takes the signal from the sensor and manipulates it in to a condition, which is suitable for either display, or in the case of a control system, for use to exercise control.
6. What are the two basic forms of the control system? :
The two basic forms of the control systems are, :
a. Open loop control system.
b. Closed loop control system.
The advantages of an open loop system are, :
a. It is being relatively simple
b. Low cost
c. Good reliability.
The disadvantage is that, they are often inaccurate since there is no correction for error. Closed loop systems have the advantage of being relatively accurate in matching the actual to the required values.
The disadvantage of the closed loop system are, :
a. More complex
b. More costly
c. Greater chance of breakdown as a consequence of the greater number of components.
7. What are the elements of the closed loop control system? :
The various elements of a closed loop control system are,
a. Comparison element
b. Control element
c. Correction element
d. Process element
e. Measurement element
8. What are the two types of feedback loop? :
The two types of feed back loop are, :
a. Positive feed back loop
b. Negative feed back loop.
The feedback is said to be negative feedback when the signal; which is feed back, subtracts from the input value. It is required to control a system. The control elements decides what action to take when it receives an error signal.
There are two types of control elements. They are, :
a. Hard – wired systems
b. Programmable systems.
Control plans are hard – wired systems in which the control plan is permanently fixed by the way the elements are connected together. Programmable system is where the control system is stored within a memory unit and may be altered by reprogramming it.
9. What are the various elements of a closed loop system for a person controlling the temperature? :
The various elements of a closed loop system are,
Controlled variable – The room temperature
Reference value – The required room temperature
Comparison element – The person comparing the measured value with the required value of temperature.
Error signal – The difference between the measured and required temperatures
Control unit – The person
Correction unit – The switch on the fire
Process – The heating by the fire
Measuring device – A thermometer
10. Write about the Mechatronics approach in a micro-processor – controlled washing machine? :
In the microprocessor-controlled washing machine, a mechanical system has become integrated with electronic controls. As a consequence, a bulky mechanical system is replaced by a much more compact microprocessor system, which is readily adjustable to give a greater variety of programs.
11. What is the larger scale application of Mechatronics? :
A larger scale application of Mechatronics is a Flexible Manufacturing engineering System (FMS) involving computer – controlled machines, robots, automatic material conveying and overall supervisory control.
12. What is the purpose of a sensor? :
Sensor is used for an element which produces a signal relating to the quantity being measured. I.e., an electrical resistance temperature element, the quantity being measured is temperature and the sensor transforms an input of temperature into a change in resistance.
13. Define transducer? :
The term transducer is often used in place of the term sensor. Transducer are defined as elements that when subject to some physical change experience a related change. Thus, sensors are transducers.
14. What are the terms that define the performance of the transducers? :
The terms are,
a. Range and span
b. Error
c. Accuracy
d. Sensitivity
e. Hysteresis error
f. Non – linearity error
g. Repeatability / reproducibility
h. Stability
i. Dead band / time
j. Resolution
k. Output impedance.
15. Write about the static characteristics? :
The static characteristics are the values given when the steady – state conditions occur. i.e., the values given when the transducer has settled down after having received some input.