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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER • EXAMINATION SUMMER 2018
Subject Code: 310023 Date: 25-May-2018
Subject Name: Electronic Materials Components
Time:02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)
Q.1

Explain Energy Band diagram for conducting, insulating and semiconducting material.
07



07

Compare properties of Hard and Soft Magnetic materials.




Q.2

Explain Electrical and Chemical properties of Insulating Material.
07



07

What is temperature coefficient of resistance? Explain Positive, Negative and Zero value for temperature coefficient of resistance.




OR

Explain properties and application of copper and aluminum.
07


Q.3

Explain Magnetic Hysteresis Loop in detail.
07



07

Explain dielectric strength and Dielectric loss.




OR
Q.3

Give classification of Magnetic Material and explain any one in detail.
07



07

Write name of few commonly used insulating material and state properties and application of any two of them.




Q.4

What is an Intrinsic material? Describe it. For what and how we make Extrinsic material from it?
07



07
2/2

Draw symbol of Diode, Figure of Forward bias, Reverse bias and V-I characteristic of diode.
Write table of resistor color code and give one example of it.


V-I


OR
Q.4

Explain N type and P type semiconductor material.
07


N P
07

Draw symbol of Zener diode, Light emitting diode, photodiode, variable capacitor
Give classification of Resistors.





Q.5

Classify relay and explain any one of it.
07



07

Write different method of manufacturing PCB (Printed Circuit Board) and explain any one of it.


PCB

OR
Q.5

Define capacitor with its symbol. Explain electrolytic capacitor and give difference between electrolytic and non electrolytic.
07



07

What is Piezo elastic effect? Draw its crystal structure and explain its working.