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| Roll No. | Total No. of Questions : 09 Total No. of Pages : 02 |
B.Tech.(?) (2011 & Onwards) (Sem.-3)
ELECTRONICS DEVICES AND ANALOG ICS
Subject Code: El-201
M.Code: 58007
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Time: 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
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SECTION-A
- Write briefly :
- What is the use of DC load line?
- Draw the VI characteristics of the JFET
- Write input resistance equation of hybrid equivalent CC configuration.
- What do you understand by heat sink?
- What is use of multistage amplifiers? List at least two advantages of it.
- Distinguish between couplings and bypass capacitor.
- Define the role of XY plate of CRO.
- What is “Dark current” of a photodiode?
- Explain the LC filter used in rectifiers.
- What is beam shaping?
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SECTION-B
- Draw the hybrid model of a low frequency small signal voltage amplifier.
- Discuss the working of symmetric push pull amplifier with suitable diagram.
- What is JFET? Distinguish between FET and MOSFET.
- Explain the operation of N-channel MOSFET in depletion mode using suitable diagram.
- What is the basic principle of working of LCD's? How these differ from LED's.
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SECTION-C
- In the circuit given below, calculate Zi, Zo, Av, and Ai. Note that this CE stage uses a single bias resistor RB1 which is the value RBB.
- What is a rectifier? Compare and contrast half and full wave rectifiers.
- Write short notes on :
- CRO
- Transistor as switch
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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Tech 3rd Semester Last 10 Years 2011-2021 Previous Question Papers|| Punjab Technical University
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