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Gujarat Technological UniversitySummer 2023 Examination

GTU 3110016 Basic Electronics (BE) Summer 2023 Paper Solution & PDF

B.E. · Common Engineering · Semester 1 · Subject Code: 3110016
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Total Marks70 MarksExternal theory exam
Passing Marks23 Marks33% minimum cutoff
Exam Duration2.5 Hours10:30 AM – 1:00 PM
Paper Structure5 QuestionsWith internal OR choices
Jump toQ1Q2Q3Q4Q5

Question 1

14 MarksMedium
(a)
Explain zener diode as a Voltage regulator.
3 Marks
(b)

Compare Half wave rectifier and Full wave bridge rectifier for following parameters.

iAverage DC Voltage
iiRipple Factor
iiiPIV
ivRectifier Efficiency
4 Marks
(c)

Illustrate the need of clipper circuit and explain Positive clipper and negative clipper with necessary diagram and waveforms.

7 Marks

Question 2

14 MarksMedium
(a)
Describe the need of biasing the transistor.
3 Marks
(b)

Draw the symbol of NPN & PNP transistor, write its different operating regions and also explain why it is called as “Bipolar Transistor”.

4 Marks
(c)

Discuss Common Collector(CC) configuration of transistor and explain its input and output characteristics.

7 Marks
OR OPTION
(c)

Discuss Common Base(CB) configuration of transistor and explain its input and output characteristics.

7 Marks

Question 3

14 MarksMedium
(a)
Derive the relation between current gain α and β
3 Marks
(b)
Describe the factors affecting the Stability of Q point.
4 Marks
(c)

Explain the construction, working principle and application of phototransistor.

7 Marks
OR OPTION
(a)
Discuss about leakage current in transistor.
3 Marks
(b)
Write a short note on Thermal runaway.
4 Marks
(c)

Describe the construction, the symbol, V-I characteristics and application of Tunnel diode.

7 Marks

Question 4

14 MarksMedium
(a)
Discuss about transconductance curve of JFET.
3 Marks
(b)
Explain transistor as a switch.
4 Marks
(c)

Explain in detail different models used for AC analysis of BJT circuits.

7 Marks
OR OPTION
(a)
Write applications of JFET.
3 Marks
(b)
Explain the working of Emitter follower.
4 Marks
(c)

Draw h parameter equivalent model for CE amplifier and derive the equation for input impedance, output impedance, Voltage gain and current gain for CE amplifier.

7 Marks

Question 5

14 MarksMedium
(a)

Draw symbol, truth table and Boolean equation for EX-OR and EX- NOR gate.

3 Marks
(b)
Compare different logic families.
4 Marks
(c)

Explain the construction and principle of operation of Enhancement type P-channel MOSFET.

7 Marks
OR OPTION
(a)
Design AND, OR and NOT gate using NAND Gate.
3 Marks
(b)
Explain Transistor Transistor Logic (TTL).
4 Marks
(c)

Explain the construction, working and drain characteristics of N- Channel JFET.

7 Marks
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About this Examination Paper & Attribution

Official Gujarat Technological University (GTU) examination paper and step-by-step solutions for Basic Electronics (BE) (Summer 2023, B.E. · Common Engineering, Sem 1). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

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