Download GTU BE/B.Tech 2018 Winter 4th Sem New 2141706 Analog Signal Processing Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-1V (NEW) EXAMINATION - WINTER 2018

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

1. (a) Draw the buffer circuit using op-amp. 03
   (b) Design practical integrator circuit to integrate 20Khz.square wave signal. 04
   

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   (c) Discuss three op-amp design of Instrumentation amplifier. Derive its transfer function. 07

2. (a) Draw dual input unbalanced differential amplifier using transistors. 03
   (b) Give the IC numbers of any op-amps used for loop control and low error signal conditioning circuits. 04
   (c) Draw Active second order high pass butter worth filter. Derive its transfer function. 07
   OR
   

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   (c) Draw Active second order low pass butter worth filter. Derive its transfer function 07

3. (a) What is the significance of input impedance value in signal conditioning circuit. Give input impedance value of op amp 741. 03
   (b) Draw the inverting amplifier circuit.using op-amp to convert 0 to 2 V signal into 0 to 1 volt output: 04
   (c) Draw circuit diagram for astable multivibrator using 555 IC. Select the component values for, 1ms ON time. 07
   OR
   

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3. (a) Define PSRR for op-amp. Give its value for 741 op-amp . 03
   (b) Draw the non inverting amplifier circuit using op-amp to convert 0 to 3 v input signal into 0 to 1 v output signal. 04
   (c) Draw circuit, diagram for monostable multivibrator using 555 IC.Select the component values for 3ms ON time. 07

4. (a) Give barkhausen criteria for oscillator design. 03
   

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   (b) Design wien bridge oscillator 04
   (c) Discuss R-2R type ADC. 07
   OR

4. (a) An op-amp circuit designed as an amplifier starts functioning as an oscillator. What remedy should I apply to bring this circuit out of oscillation? 03
   (b) Design Quadrature oscillator 04
   

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   (c) Discuss binary weghted type DAC. 07

5. (a) Discuss the need of isolation amplifier in instrumentation circuits. 03
   (b) Draw negetive voltage limiter circuit using op-amp. The design should limit the output voltage to -5 v. 04
   (c) Design voltage to current conveter circuit for grounded load,using op-amp. The circuit should produce 1mA current per change in 1 V dc input. 07
   OR

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5. (a) Draw small signal full wave rectifier circuit using op-amp.This rectifier should produce 2 V Dc output. Draw the waveforms of output with indicated values. 03
   (b) Draw programmable gain amplifier circuit. 04
   (c) Draw the circuit diagram for band pass and band rejection filter. 07

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