G12402 Analog Electronics DECE Question Paper Model : psgpolytech.ac.in
College : Psg Polytechnic College
Degree :DECE (Diploma in Electronics & Communication Engineering)
Semester : IV
Subject : G12402 Analog Electronics
Document Type : Model Question Paper
Website : psgpolytech.ac.in
Download Model/ Sample Question Papers :https://www.pdfquestion.in/uploads/psgpolytech.ac.in/6226-G12402ANALOG_ELEC_QP.pdf
Analog Electronics Question Paper :
PSG POLYTECHNIC COLLEGE, COIMBATORE – 641 004
DIPLOMA EVEN SEMESTER EXAMINATIONS – APR 2014
Instructions :
Related : PSG Polytechnic College G12404 Antennas & Microwave Engineering DECE Question Paper Model : www.pdfquestion.in/6227.html
1. Group A and Group B questions should be answered in the Main Answer book.
2. Answer any TEN questions in Group A. Each question carries two marks.
3. Answer ALL questions either (a) subdivision or (b) subdivision in Group B. Each question carries 14 marks.
G12402 Analog Electronics
MODEL QUESTION PAPER
Time : 3 Hours Max.Marks: 100
Group – A Marks : 10 x 3 = 30
1. Draw the ideal schematic and block diagram of OP-AMP.
2. List the ideal characteristics of OP-AMP
3. List the non-ideal DC characteristics of OP-AMP
4. Draw the circuit diagram of half wave rectifier using OP-AMP and mention the need of precision diode.
5. Draw the Sample and Hold circuit using OP-AMP and list the type and material of capacitor used.
6. Design an Adder/subtractor circuit using OP-AMP.
7. Draw the zero crossing detector circuit and mention its importance.
8. Determine the threshold voltages VUT and VLT of a Schmitt trigger whose R2=100 Ohm, R1 = 50KOhm, Vref = 0V, Vi= 1 Vpp sine wave and saturation voltage = (+/- 14)V,
9. With the use of OP-AMP, design a triangular wave form generator.
10. Draw the series OP-AMP regulator circuit and mention its uses
11. Draw the 723 general purpose regulators
12. Draw and mention the uses of variable resistive network.
13. Draw the functional block diagram of 555 IC
14. In the monostable multivibrator R=100 Kohm and the time delay T=100mS.Calculate the value of C.
15. List the applications of mono stable mode.
Group– B Marks : 5 x 14 = 70
16. a) i) Explain the operation of inverting amplifier using OP-AMP (5) ii) In the inverting amplifier calculate (i) i1 (ii) vo (iii) iL and (iv) total current io in to the input pin when the value R1=10kohm, Rf = 100Kohm, Vi= 1V and a load of 25 Kohm is connected at the output. (9)
(OR)
b) i) Brief about Difference mode and Common mode. (5)
ii) Brief about Input offset voltage, Slew rate, and Thermal drift. (9)
17. a) i) Explain how the portion of input signal is blocked at the output signal using OP- AMP and full wave rectifier using OP-AMP. (5)
ii) With neat circuit diagram explain the OP-AMP can be used as Full-wave rectifier.
(9)
(OR)
b) Explain the operation of Integrator and differentiator using OP-AMP.
18.a) Draw and explain the circuit generates sine wave using OP-AMP.
(OR)
b) Explain the operation of mono stable multi vibrator using OP-AMP.
19.a) In-short explain the 4-bit digital to analog convertor with its complete schematic.
(OR)
b) Explain the working of successive approximation technique of analog to digital convertor.
20. a) Explain the operation of linear ramp detector using timer IC.
(OR)
b) With neat sketch, explain the working of Voltage Controlled Oscillator and Pulse Width Modulation circuit
Electronic Devices & Circuits Question Paper :
Time : 3 Hours
Max. Marks : 100
Group – A Marks : 10 x 3 = 30
1. What is meant by biasing- State different methods of biasing-
2. State Emitter follower .
3. Compare Half wave rectifier and Full wave rectifier.
4. Draw the Darlington pair circuit.
5. What is cross over distortion-
6. In a silicon transistor biased by feedback resistor method, Vcc=20V, RC=1KΩ, RB=100KΩ, β=100. Determine the operating point.
7. Compare Oscillator and Amplifier.
8. How to make a transistor to operate as a switch?
9. Why FET is called voltage controlled device? Mention its application.
10. Describe why Zener diode is used as Regulators.
11. State the applications of Thyristor.
12. In a negative-feedback amplifier, A=100, β=0.04 and Vi=50mV. Find
(a) Gain with feedback (b) output voltage (c) feedback factor (d) feedback voltage.
13. Derive the rectification efficiency for Full wave rectifier.
14. Name the types of Amplifiers with its applications.
15. What are the merits and demerits of Multivibrators?