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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC SEMESTER-III EXAMINATION WINTER 2018
Subject Code:X30901 Date: 17/11/2018
Subject Name: Basic Electronics
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Explain Hall effect in detail.
07

What is the necessity of filter? Explain capacitor filter in detail.
07
Q.2

Explain energy band diagram of insulator, semi conductor and metal.
07

Explain push-pull amplifier with necessary diagram.
07
OR

Give comparison of CB, CE and CC configuration of transistor amplifier.
07
Q.3

Explain V-I characteristics of P-N junction diode.
07

Explain the various types of diode and draw their symbols.
07
OR
Q.3

Explain working and construction of MOSFET.
07

Explain construction and working of P-type JFET.
07
Q.4

Explain h-parameters for CB configuration.
07

Explain bias compensation techniques for stabilization.
07
OR
Q.4

Explain full wave rectifier with centre tape and derive its output equation..
07

Explain the construction of photo transistor. Also explain its characteristics with its one application.
07
Q.5

Discuss the comparison between half wave rectifier circuit and full wave rectifier circuit with diagram.
07

Explain the formation of n-type and p-type semiconductor.
07
OR
Q.5

State and explain the electrical properties of Ge and Si.
07

What is the stability factor? Derive its equation against the change in ICO, VBE and β.
07