Download GTU BE/B.Tech 2019 Winter 1st And 2nd Sem New And Spfu 3110016 Basic Electronics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 1st And 2nd Sem New And Spfu 3110016 Basic Electronics Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? I & II (NEW) EXAMINATION ? WINTER 2019
Subject Code: 3110016 Date: 06/01/2020

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.



Marks

Q.1 (a) Draw the circuit diagram of Half wave rectifier. 03
(b) Explain the bridge rectifier with diagrams. 04
(c) Determine the Vo for the network shown in figure 1


Figure 1
07

Q.2 (a) Explain Varactor diode and varistor. 03
(b) Why Zener diode can be used as voltage regulator?
Explain Zener as voltage regulator with necessary
diagram
04
(c) Compare the logic families and explain any one of them. 07
OR
(c) Explain Ex-OR and Ex- NOR gate with truth table and
construct OR gate using diodes.
07
Q.3 (a) Explain about DC load line and Bias point of transistor 03
(b) Explain the working of PIN Diode. 04
(c) Briefly explain the h-parameters and draw h-parameter
based equivalent circuit for CE transistor and derive
equation for input impedance, output impedance and
voltage gain.
07
OR
Q.3 (a) Write truth table of AND, NAND and NOR gates. 03
(b) Explain the selection of a Q point for a transistor bias
circuit and discuss the limitations on the output voltage
swing.
04
(c) Explain the difference between clipping and clamping
circuit. A positive voltage clamping circuit and a
positive voltage clipping circuit each have ?12 V square
Wave input. Sketch the output waveform for each
circuit.
07
Q.4 (a) Draw voltage multiplier circuit. 03
(b) Explain Transconductance and switching in FET. 04
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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? I & II (NEW) EXAMINATION ? WINTER 2019
Subject Code: 3110016 Date: 06/01/2020

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.



Marks

Q.1 (a) Draw the circuit diagram of Half wave rectifier. 03
(b) Explain the bridge rectifier with diagrams. 04
(c) Determine the Vo for the network shown in figure 1


Figure 1
07

Q.2 (a) Explain Varactor diode and varistor. 03
(b) Why Zener diode can be used as voltage regulator?
Explain Zener as voltage regulator with necessary
diagram
04
(c) Compare the logic families and explain any one of them. 07
OR
(c) Explain Ex-OR and Ex- NOR gate with truth table and
construct OR gate using diodes.
07
Q.3 (a) Explain about DC load line and Bias point of transistor 03
(b) Explain the working of PIN Diode. 04
(c) Briefly explain the h-parameters and draw h-parameter
based equivalent circuit for CE transistor and derive
equation for input impedance, output impedance and
voltage gain.
07
OR
Q.3 (a) Write truth table of AND, NAND and NOR gates. 03
(b) Explain the selection of a Q point for a transistor bias
circuit and discuss the limitations on the output voltage
swing.
04
(c) Explain the difference between clipping and clamping
circuit. A positive voltage clamping circuit and a
positive voltage clipping circuit each have ?12 V square
Wave input. Sketch the output waveform for each
circuit.
07
Q.4 (a) Draw voltage multiplier circuit. 03
(b) Explain Transconductance and switching in FET. 04
2
(c) Explain the Depletion region and drain characteristics of
n channel JFET.
07

OR
Q.4 (a) Discuss about VI characteristic of Ideal Diode. 03
(b) Explain FET as an Amplifier. 04
(c) Determine the voltage Vo for the network of Figure 2.
Give explanation for your answer.


Figure 2
07
Q.5 (a) Explain the working of Transistor as Switch 03
(b) Write a short note on E MOSFET as an Amplifier. 04
(c) Design a series noise clipping circuit which rectify the
noise signal with amplitude lower than ?V F .
07
OR

Q.5 (a) Explain the AC load line of transistor. 03
(b) Draw and explain seven segment display. 04
(c) Compare BJT with FET and explain D MOSFET. 07

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