PART-A(10 x 2 = 20 Marks)
1. What is mechatronics approach?
2. Whatare the key elements of a mechatronics system?
3. What are the classifications of instruction set according to word size?
4. What is the function of accumulator?
5. What is keydebouncing?
6. Name the modes available in 8255 A Control Word format.
7. Define a programmable Logic controller.
8. Explain delay on and delay off timer with ladder diagram?
9. Write down any four primary function of mechanical actuation system?
10. Write the basic step if the program to run a stepper motor.


                                    PART-B (5×16=80 Marks)

11. (a) with an example explain the various function units of a measurement system.            (16)
(or)
      (b).what is RTD?Explain the relationship between resistance and temperaturefor the RTDwith temperature curve.what are the advantages and disadvantages of RTDs?                                (16)

12. (a) Explain with a neat block diagram, the architecture of 8085 microprocessor.                     (16)
             (or)
        (b)Explain with the draw in a pin diagram of 8085 microprocessor.          (16)
13 (a) Explain the operation modes of 8255 programmable peripheral interface.                           (16)
(or)
      (b) Describe with a neat diagram the stepper motor control using microprocessor 8085.           (16)
14. (a)Explain the configuration of a PLC. List the considerations in selecting a PLC.                     (16)
(or)
      (b) Discuss how AND, OR, NOR and NAND system can be formed with ladder diagram.         (16)
15. (a )what is a stepper motor? Explain the working principle of stepper motor in half step mode.   (16)
(or)
 (b) Discuss mechatronics design of an automatic car park system.                                            (16)