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Roll No. Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (EE) PT (Sem.-2)
ELECTRONICS DEVICES AND CIRCUITS
Subject Code : BTEE-304
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M.Code : 71537
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION -B & C have FOUR questions each.
- Attempt any FIVE questions from SECTION B & C carrying EIGHT marks each.
- Select atleast TWO questions from SECTION - B & C.
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SECTION-A
Write briefly :
- What do you mean by ripple factor? Explain.
- Define the term diffusion.
- Compare BJT and MOSFET.
- Why depletion layer is developed in a diode?
- Define ICBO and ICEO. How they are different?
- Write down the basic requirements for the oscillation to occur.
- List the ideal characteristics of an Op-Amp.
- What do you mean by feedback? List the effects of negative feedback.
- How power amplifier is different from voltage amplifier? Discuss.
- What do you mean by integrated circuit? Explain.
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SECTION-B
- Draw the circuit diagram and explain the working of full wave rectifier using bridge connections. Explain why a bridge rectifier is preferred over centre-tap rectifier.
- Describe the basic structure and operation of an FET. Also draw and explain the V-I characteristics of FET.
- Discuss the working of voltage to current and current to voltage converter using operational amplifier.
- Draw the circuit diagram and explain in detail first order high pass and band stop active filters.
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SECTION-C
- Discuss in detail the working of switched mode power supply.
- a) Draw and discuss CB transistor configuration. Also draw and explain its input and output characteristics.
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b) Discuss the circuit diagram and working of Astable multivibrator. - Draw and explain the basic principle, construction and characteristics of :
a) Zener Diode
b) Varactors Diode - Discuss the following :
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a) Colpitts oscillator
b) Operational amplifier as an integrator and Schmitt trigger.
NOTE : Disclosure of Identity by writing Mobile No. or Marking of passing request on any paper 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 Question Papers 2020 December (All Branches)