PTU B.Tech 5th Semester Last 10 Years 2011-2021 Previous Question Papers|| Punjab Technical University
Total No. of Pages : 03
Total No. of Questions : 18
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B.Tech. (ECE) (Sem.-5)
LINEAR INTEGRATED CIRCUITS
Subject Code : UC-BTEC-503-18
M.Code : 78759
Time : 3 Hrs. Max. Marks : 60
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INSTRUCTIONS 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.
SECTION-A
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Write briefly :
- Define virtual ground in OpAmp circuits.
- List features of ideal OpAmp.
- Define CMRR for OpAmp. What is typical CMRR value?
- How does negative feedback effect input impedance in non-inverting amplifier?
- What is the significance of slew rate in OpAmp circuits?
- How does zero-detector circuit work?
- What is PLL? Give an application.
- Differentiate monostable, bistable, and astable multivibrators.
- What are instrumentation amplifiers? List some important required features.
- Where do we use positive feedback in OpAmp circuits? Give reasons.
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SECTION-B
- Draw labelled internal circuit diagram of OpAmp IC741.
- Draw and explain working of OpAmp based square wave generator.
- Determine operating points current and voltage for the differential amplifier circuit shown in the figure. Given parameters are :
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Rs1 = Ro = 40O
Rg = 5kO
Rec1 = R = 3kO
ß = 100
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