Mechatronics & Microprocessor - Dec 2014

Mechanical Engineering (Semester 6)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks. 1 (a) Define mechatronics. List the advantages and disadvantages of mechatronics.(4 marks) 1 (b) Explain briefly elements of closed loop control system with a example.(8 marks) 1 (C) Explain with the block diagram, how a microprocessor control system is used to control the focusing and exposure in an automatic camera.(8 marks) 2 (a) Define the following terms: i) Hysteresis error ii) Accuracy.(4 marks) 2 (b) What is hall effect? Explain the principle of hall effect with neat Sketch.(8 marks) 2 (c) Explain how sending is achieved by an incremental optical encoder. Write its applications.(8 marks) 3 (a) What is a actuator? Name any four important solid state switches and explain each in brief.(10 marks) 3 (b) Write and explain non-permanent magnet type DC motors with schematic diagrams.(10 marks) 4 (a) Define signal conditioning, what are the necessity for signal conditioning.(4 marks) 4 (b) Explain balance mode of wheat stone bridge and hence deduce the expression for change in output voltage.(10 marks) 4 (c) With block diagram, explain date acquisition system.(6 marks) 5 (a) Explain the concept overflow and underflow with an example.(4 marks) 5 (b) What is logic gate? Explain AND, OR, NOR and NAND..gates with symbols and truth table.(10 marks) 5 (c) Convert the following
i)(3FD)₁₆=()₁₀
ii)(3509)₁₀=()₁₆
iii)(475.25)₈=()₁₀
iv)(1101.1)₂=()₁₀.(10 marks) 6 (a) What are micro-controllers? Distinguish between a micro-processor and micro-controllers.(6 marks) 6 (b) Explain with a neat sketch. The internal architecture of Intel 8085 microprocessor.(14 marks) 7 (a) Briefly explain the classification of instructions provided by 8085(10 marks) 7 (b) Write a program for multiply two S-bit numbers stored in memory locations 2200 H and 2201 H. Store the result in memory locations 2300 H and 2301 H.(10 marks) 8 (a) Explain the flow of instruction and data in the 8085 microprocessor.(10 marks) 8 (b) List the four operations performed by CPU.(4 marks) 8 (c) Distinguish between instruction cycle, machine cycle and T-state.(6 marks)