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Electronic Devices and Circuits 1 Question Paper - Jun 19 - Electronics Engineering (Semester 3) - Mumbai University (MU)
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Electronic Devices and Circuits 1 - Jun 19
Electronics Engineering (Semester 3)
Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Draw neat diagrams wherever necessary.
1.a.
Explain the concept of virtual ground in op-amp
(5 marks)
00
1.b.
Explain block diagram of PCM.
(5 marks)
00
1.c.
Compare FET and BJT
(5 marks)
00
1.d.
What is ZCD?
(5 marks)
00
2.a.
Explain the construction and working of n-channel JFET with help of characteristic curves.
(10 marks)
00
2.b.
Explain op-amp as integrator.
(10 marks)
00
3.a.
List down various parameters of op-amp with their practical values and ideal values for IC741.
(10 marks)
00
3.b.
Explain working of PLL as frequency as frequency multiplier with diagram.
(10 marks)
00
4.a.
Explain Superheterodyne Receiver along with waveforms at each stage.
(10 marks)
00
4.b.
What are power amplifiers. What are the types of power amplifiers. Explain class C power amplifiers.
(10 marks)
00
5.a.
Derive the equations for Zi, Zo, Av for common source configuration using voltage divider network.
(10 marks)
00
5.b.
Discuss Delta Modulation and Adaptive Delta Modulation.
(10 marks)
00
Write short note:
(5 marks)
00
6.a. TDM-PCM System.
6.b.
Generation of FM
(5 marks)
00
6.c.
Comparators.
(5 marks)
00
6.d.
op-amp as summing amplifier.
(5 marks)
00
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