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Microprocessor Applications (Elective I) (October 2009)

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Total No. of Questions : 10] P1305 [Total No. of Pages :2 [3664] - 13 B.E. (Mechanical) MICROPROCESSOR APPLICATIONS (1997 Course) (402045) (Elective - I) Time : 3 Hours] [Max. Marks:100 Instructions to the candidates: 1) Answer any three questions from each section. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) b) c) Q2) a) b) Explain following semiconductor memories: i) RAM ii) ROM iii) PROM iv) EPROM [8] With the help of diagram, explain the interfacing of memory to microprocessor / microcontroller. [8] Compare static and dynamic RAMs. [2] What are different addressing modes of 8051? Give example of each mode. [8] Explain in detail the special function registers of 8051. [8] Q3) a) b) Draw and explain the internal architecture of 8051. Explain in detail timer/counter modes of 8051. Q4) a) How data transmission and reception is achieved using RS323C? Also [10] explain RS232C standards in detail. Explain bit oriented instructions in 8051. [6] b) [8] [8] P.T.O. Q5) a) b) What are different performance parameters of ADC? Explain in detail.[8] With the help of diagram, explain direct-conversion ADC. [8] SECTION - II Q6) a) b) Explain different components of data acquisition system. Also explain a typical application of DAS. [10] What are different types of DACs? Explain any one in detail. [8] Q7) a) Define PLC and state features of PLC. Explain architecture of PLC with block diagram. [10] b) What are the operating modes of PLC? Explain the PLC operating cycle.[6] Q8) a) Design a cooling system using PLC. Draw necessary PLC ladder diagram.[10] b) Q9) a) b) Sketch following common notations for PLC ladder diagram. i) Double pole push button. ii) Fuse. iii) Motor. [6] What is smart instrument? Explain the role of microprocessor in smart instrument with suitable example. [10] Explain different types of input devices of PLC. [6] Q10)a) Design a weighing machine using microprocessor. Draw the necessary block diagram and flow chart. [12] b) Enlist the different specifications of differential pressure transmitter. [4] kbkb [3664]-13 2

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Additional Info : 1997 Course
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