(SEM IV) THEORY EXAMINATION 2021-22 ANALOG CIRCUITS
SECTION A — Short Theory Description Needed
Section A contains basic questions like stability factor, BJT high-frequency model, efficiency of amplifiers, Barkhausen criterion, current mirror impedance, CMRR, and operational amplifier concepts. Each answer should be a small paragraph describing the meaning and purpose of the term.
Sample added questions:
Explain the need for biasing in BJT in a short paragraph.
Describe the concept of cutoff frequency in amplifiers.
Explain why power dissipation is important in analog circuits.
SECTION B — Medium Descriptive Paragraph Needed
Section B contains deeper questions like negative feedback, Wien bridge oscillator, current mirror analysis, active filters, and MOSFET design calculations. Answers must be written as one full paragraph explaining the working, formulas, and reason behind the concept.
Sample added questions:
Describe the working of a class-A amplifier in a descriptive paragraph.
Explain the importance of feedback in analog circuits.
Describe the role of differential amplifiers in analog ICs.
SECTION C — Long Description Paragraph Needed
Section C includes full-length questions involving derivations, amplifier analysis, feedback topologies, astable multivibrator design, oscillator conditions, differential amplifier expressions, and op-amp applications. Each answer must be one long descriptive paragraph, explaining the complete concept with steps or equations.
Sample added questions:
Explain the AC analysis of a common emitter amplifier in a descriptive paragraph.
Describe the operation of Colpitts oscillator with its frequency formula.
Explain the design steps of a precision full-wave rectifier.
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