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Microprocessor Applications (Elective I) (October 2010)

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Total No. of Questions :10] P1136 [Total No. of Pages : 2 [3864] - 13 B.E. (Mechanical Engineering) 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) Explain different types of semiconductor memories with suitable examples. [10] b) What are distinguishing features of microcontroller over microprocessor? Explain application areas of microcontrollers and microprocessors. [8] Q2) a) Describe bit oriented instructions of 8051. What are the advantages of bit oriented instructions? [8] b) Explain structure of port 1 of 8051. [6] c) Explain PSW register in 8051. [2] Q3) a) b) Describe use of RS232C standard for data transmission and reception. Also explain RS232C standards in detail. [10] Explain four modes of timers of 8051. [6] P.T.O. Q4) a) b) Explain various interrupts used in 8051. Describe idle and power down modes of 8051. Q5) a) With suitable diagram, explain the working of successive approximation [8] ADC. Explain basic operation of DAC. Also explain different DAC characteristics. [8] b) [8] [8] SECTION - II Q6) a) b) Q7) a) b) Q8) a) b) Explain with suitable diagram, the working of PC based data acquisition system. [8] What are various application development environments used in data acquisition systems? Explain in detail. [10] State features of PLC. Explain architecture of PLC with block diagram. [8] What are steps involved in problem solving using ladder diagram? Explain with suitable example. [8] Design a boiler control system using PLC. Draw necessary PLC ladder diagram. [12] Sketch common notations for fuse and motor in PLC ladder diagram.[4] Q9) a) b) How to multiplex analog inputs to ADCs? Explain. Discuss the applications of different types of ADCs. Q10 a) Design a microprocessor based weighing machine. Draw necessary block diagram and flow chart. [12] What are different specifications of differential pressure transmitter? Explain in brief. [4] b) jjj [3864]-13 2 [8] [8]

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Additional Info : 1997 Course
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