GTU BE 2020 Summer Question Papers || Gujarat Technological University
Subject Name: ANALOG SIGNAL PROCESSING
Time: 10:30 AM TO 01:00 PM
Total Marks: 70
Date: 29/10/2020
Subject Code: 2141706
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER- IV EXAMINATION — SUMMER 2020Subject Name: ANALOG SIGNAL PROCESSING
Time: 10:30 AM TO 01:00 PM
Total Marks: 70
Date: 29/10/2020
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) Draw only symbol and block diagram of op-amp. | 03 |
| (b) Enlist Ideal characteristics of an Op-Amp. | 04 | |
| (c) Explain the following terms: (i) Input offset voltage (ii) Differential Input resistor (iii) CMRR (iv) SVRR (v) output voltage swing (vi) Large signal voltage gain (vii) Input bias current. | 07 | |
| Q.2 | (a) Explain Voltage to Current Converter with Floating Load. | 03 |
| (b) Draw an op-amp based differential amplifier circuit and obtain expression for its differential gain. | 04 | |
| (c) Explain summing, scaling and averaging amplifier using Non-inverting configuration of operational amplifier. | 07 | |
| Q.3 | (a) Derive the gain formula of Voltage shunt amplifier. | 03 |
| (b) Explain Positive Clamper circuit. | 04 | |
| (c) Draw the circuit: 1. Wide band Pass filter-and 2. Narrow band pass filters. | 07 | |
| Q.3 | (a) What is DAC? Draw and explain binary weighted resistor DAC. | 03 |
| (b) Explain Positive clipper circuit: | 04 | |
| (c) Draw the circuit diagram: (1) All pass filter. (2) High pass filter. | 07 | |
| Q4 | (a) Explain integrator circuit-along with circuit diagram. | 03 |
| (b) What is the offset-minimizing resistor ROM? | 04 | |
| (c) Explain the offset voltage compensating network for non-inverting amplifier. | 07 | |
| Q4 | (a) Explain basic differentiator and practical differentiator circuit in detail. | 03 |
| (b) Draw oscillator bock diagram and write principles. | 04 | |
| (c) Explain the Phase shift oscillator. | 07 | |
| Q.5 | (a) Explain Instrumentation amplifier using three op-amps for resistive transducer and bridge. | 03 |
| (b) Explain Logarithmic amplifier. | 04 | |
| (c) Explain Wien bridge oscillator. | 07 | |
| Q.5 | (a) Draw and explain the 555 timer pin connection diagram and block diagram. | 03 |
| (b) Explain in brief: Schmitt trigger circuit. | 04 | |
| (c) Explain the working of 555 timers as an astable multivibrator with block diagram and waveforms. | 07 |
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