Exam Details
| Subject | Applied Electronics | |
| Paper | ||
| Exam / Course | Diploma In Electronics And Communication Engineering (DECVI)/ Advanced Level Certificate Course In Electronics And Communication Engineering (ACEVI)/ | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
1. This question contains objective type questions. A UJT relaxation oscillator circuit produces a sawtooth like waveform
at B1 terminal
at B2 terminal
(iii) across the capacitor
None of these Depletion MOSFETs can operate in depletion mode only
(ii) enhancement mode only
(iii) both depletion and enhancement modes
None of these A Schmitt trigger circuit is a type of bistable multivibrator circuit
monostable multivibrator circuit.
(iii) astable multivibrator circuit
None of these According to Barkhausen criteria for sustained oscillations, BA< 1
(ii) BA> 1
(iii) BA= 1
(iv) BA= 0 Voltage -Shunt feedback stabilizes voltage gain
(ii) current gain
(iii) transresistance
transconductance
Which of the following best describes a Class-A amplifier? High efficiency and high distortion
(ii) Low efficiency and high distortion
(iii) Low efficiency and low distortion
High efficiency and low distortion Class-C amplifiers are generally used as Power amplifiers
(ii) RF amplifiers
(iii) Audio amplifiers
None of these
2.(a) How does the circuit configuration of an oscillator differ from that of an amplifier What are the different constituents of an oscillator circuit? With the help of a relevant circuit diagram, briefly describe the operation of an RC phase shift oscillator. What is the phase shift introduced by each of the three RC sections in the feedback network at the operating frequency?
3.(a) Differentiate between the construction of enhancement type MOSFET and depletion type MOSFET. Explain the V characteristics of a depletion type MOSFET.
(b) For the self-bias circuit shown below, determine the value of drain current ID and gate-source voltage <img src='./qimages/11576-3b.jpg'>
4.(a) Sketch the output voltage for the Vout circuit shown in Figure Assume diodes D1 and D2 to be ideal diodes. <img src='./qimages/11576-4a.jpg'> Draw and explain the working of a Bistable multivibrator. Give its specific application.
5.(a) What is crossover distortion What are the main factors that lead to crossover distortion and how can they be removed?
(b) Draw the circuit diagram of Class-A push-pull amplifier and explain its principle of operation.
6.(a) What type of negative feedback should be used in an amplifier to make it work like a true current to voltage converter, and
(ii) voltage to current converter? Justify your answer.
(b) What are tuned amplifiers? What is the fundamental difference between audio-amplifiers and tuned amplifiers?
7.(a) Enumerate the various methods which are employed for generating time-base waves. Give a circuit diagram for an exponential sweep circuit and explain its operation.
(b) Determine the output voltage V0 for the circuit shown in Figure for the input signal shown in the same Figure 7(b).
<img src='./qimages/11576-7b.jpg'>
8. Write short notes on any four of following: Applications of Time-base Generator
Schmitt Trigger
UJT Relaxation Oscillator
Colpitts Oscillator
Double Tuned Amplifiers
Advantages of Transformer Coupled Power Amplifiers
at B1 terminal
at B2 terminal
(iii) across the capacitor
None of these Depletion MOSFETs can operate in depletion mode only
(ii) enhancement mode only
(iii) both depletion and enhancement modes
None of these A Schmitt trigger circuit is a type of bistable multivibrator circuit
monostable multivibrator circuit.
(iii) astable multivibrator circuit
None of these According to Barkhausen criteria for sustained oscillations, BA< 1
(ii) BA> 1
(iii) BA= 1
(iv) BA= 0 Voltage -Shunt feedback stabilizes voltage gain
(ii) current gain
(iii) transresistance
transconductance
Which of the following best describes a Class-A amplifier? High efficiency and high distortion
(ii) Low efficiency and high distortion
(iii) Low efficiency and low distortion
High efficiency and low distortion Class-C amplifiers are generally used as Power amplifiers
(ii) RF amplifiers
(iii) Audio amplifiers
None of these
2.(a) How does the circuit configuration of an oscillator differ from that of an amplifier What are the different constituents of an oscillator circuit? With the help of a relevant circuit diagram, briefly describe the operation of an RC phase shift oscillator. What is the phase shift introduced by each of the three RC sections in the feedback network at the operating frequency?
3.(a) Differentiate between the construction of enhancement type MOSFET and depletion type MOSFET. Explain the V characteristics of a depletion type MOSFET.
(b) For the self-bias circuit shown below, determine the value of drain current ID and gate-source voltage <img src='./qimages/11576-3b.jpg'>
4.(a) Sketch the output voltage for the Vout circuit shown in Figure Assume diodes D1 and D2 to be ideal diodes. <img src='./qimages/11576-4a.jpg'> Draw and explain the working of a Bistable multivibrator. Give its specific application.
5.(a) What is crossover distortion What are the main factors that lead to crossover distortion and how can they be removed?
(b) Draw the circuit diagram of Class-A push-pull amplifier and explain its principle of operation.
6.(a) What type of negative feedback should be used in an amplifier to make it work like a true current to voltage converter, and
(ii) voltage to current converter? Justify your answer.
(b) What are tuned amplifiers? What is the fundamental difference between audio-amplifiers and tuned amplifiers?
7.(a) Enumerate the various methods which are employed for generating time-base waves. Give a circuit diagram for an exponential sweep circuit and explain its operation.
(b) Determine the output voltage V0 for the circuit shown in Figure for the input signal shown in the same Figure 7(b).
<img src='./qimages/11576-7b.jpg'>
8. Write short notes on any four of following: Applications of Time-base Generator
Schmitt Trigger
UJT Relaxation Oscillator
Colpitts Oscillator
Double Tuned Amplifiers
Advantages of Transformer Coupled Power Amplifiers
Other Question Papers
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Subjects
- Advance Microprocessor And Architecture
- Analog And Mixed Mode Vlsi Design
- Analog Communication
- Analog Electronic Circuits
- Analog Integrated Circuits Design
- Antennas And Propagation
- Applied Electronics
- Audio and Video Engineering
- Basic Telematics
- Basics Of Electronics Engineering
- Bio Informatics
- Circuits and Networks
- Computer Architecture
- Computer Communication Networks
- Control Engineering
- Data Communication And Network
- Data Structures
- Device Modelling For Circuit Simulation
- Digital Communication
- Digital Electronics
- Digital Signal Processing
- Digital System Design
- Dip- ECE PCB Design & Testing
- Electromagnetic Field Theory
- Electronic Measurement And Instrumentations
- Electronic Measurement and Instruments
- Electronic Product Design
- Electronic Switching Circuits
- Embedded System Design
- Industrial Electronics
- Information Theory And Coding
- Linear Integrated Circuits
- Maintenance Of Electronic Equipment
- Micro Controller
- Micro Controllers
- Microelectronics Technology
- Microprocessor
- Microprocessor And Its Applications
- Microwave And Radar Engineering
- Modeling And Testing Of Digital Systems
- Multirate Systems
- Nano - Electronics
- Optical Fiber Communication
- Opto Electronics Communication Systems
- Power Electronics
- Principles of Communication Engineering
- Quantum Communication
- Rf Circuits
- Satellite And Tv Engineering
- Signal Compression
- Signals And Systems
- Technical English
- Television Engineering
- Wireless Communication