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Reg No.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SEVENTH SEMESTER B.TECH DEGREE EXAMINATION(R&S), MARCH 2020

Course Code: ME407
Course Name: MECHATRONICS

Max. Marks: 100 Duration: 3 Hours

PARTA
Answer any three full questions, each carries 10 marks. Marks
1 2) Suggest a method of sensing temperature using a non-contact method. Explain (4)

the method with suitable sketches.

b) Distinguish between the features of synchro and resolver. (4)
c) List any two active sensors. (2)
2 2) Describe the working of piezoelectric vibration sensor. (6)

b) Describe the working principle and applications of acoustic emission sensor (4)

system.

3 2) Explain the working of the elements of a hydraulic power supply unit. (6)

b) Sketch the standard symbols for (i) 4/3 DC Valve (ii) Push Button operated (4)

poppet valve (iii) Pressure relief valve (iv) Unidirectional valve

4 2) Develop a standard circuit for a hydraulic shaper in which the backward motion (8)

of linear actuator is quicker than the forward motion. Describe the working.

b) Suggest two applications for pneumatic circuits in industrial automation. (2)

PART 8
Answer any three full questions, each carries 10 marks.

5 2) Illustrate the use of sacrificial layer in MEMS fabrication. (4)

b) Describe LIGA process to develop a micro-gear in gold material (6)

6 9) List the factors influencing the micro-machining with wet etching. (2)

0) Illustrate the construction and working of MEMS accelerometer. (8)

7 a) Describe the functioning of hydrostatic and aerostatic linear motion guideways. (4)

b) Illustrate the working of recirculating ball screws. (6)

8 Explain the types of adaptive control systems used in CNC machine tools. (10)
PART C

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