D

Reg No.:

04000ME407052002

Pages: 2

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Seventh Semester B.Tech Degree Examination (Regular and Supplementary), December 2020

Max. Marks: 100

1 ஐ
b)
2 a)
b)
3 a)
b)
4 2)
b)
௦)
5 2)
b)
6
7 2)
b)
8 a)
b)

Course Code: ME407
Course Name: MECHATRONICS

PARTA

Answer any three full questions, each carries 10 marks.
Explain with schematic diagram the working of synchros.
Illustrate the principle of operation of turbine meter for the measurement of
liquid flow.
Some temperature-controlled switches are operated by bimetallic strips.
Describe how they work.
Explain any two static characteristics of a sensor
Draw the symbol for a pressure sequence valve.
Design a circuit in which pressure sequence valve is used to initiate an operation
only when another operation has been completed.
What is meant by rotary actuator?
Draw a vane motor and show important parts.

With a neat diagram explain the working of pilot operated check valve.

PART ‏تا‎

Answer any three full questions, each carries 10 marks.
Explain evaporation process for MEMS fabrication with neat sketch.
Compare dry etching process with wet etching process.
What is a gyroscope? Describe the working of MEMS based piezoelectric plate
gyroscope with suitable diagram. Also Illustrate the steps in its fabrication.
Name the technique used to eliminate backlash in a ball screw. Illustrate the
method of doing it.
Explain two methods used for input/output processing in PLC.
Represent the basic structure of PLC with the help of a block diagram.

What is the purpose of cascaded timers in PLC? Explain with example.

Page lof 2

Duration: 3 Hours

Marks

(5)
(5)

(5)

(5)
(2)
(8)

(2)
(3)
(5)

(5)
(5)
(10)

(6)

(4)

(5)
(5)