University Questions with Answers (Long Answered Questions)

University Questions with Answers

(Long Answered Questions)

(Regulation 2008)

Dec.- 11               

Q.1 Explain the operation of op-amp          as a clamper. [Section 3.22]    [8]

Q.2 Explain the working of sample/hold circuit. [Section 3.24]         [8]

Q.3 With neat diagram explain the working of dual slope type ADC. [Section 3.26 [8]

Q.4 Explain the weighted resistor DAC with neat sketch. [Section 3.25]      [8]

May-12               

Q.5 Draw the circuit of a RC phase shift oscillator using operational amplifier and derive an expression for the condition of oscillation, gain cf op-amp and frequency of oscillation. [Section 3.17] [16]

Q.6 Explain the important DAC specifications. [Section 3.25] [4]

Q.7 Explain in detail about successive approximation ADC. [Section 3.26]          [12]

Dec.-12

Q.8 Draw the circuit of a RC phase shift oscillator using operational amplifier and derive an expression for the condition of oscillation, gain cf op-amp and frequency of oscillation. [Section 3.17]   [16]

Q.9 Explain the important DAC specifications. [Section 3.25] [4]

Q.10 Explain in detail about successive approximation ADC. [Section 3.26]        [12]

May-13

Q.11 Draw the instrumentation amplifier using 3 op-amps and derive the expression for the overall gain. Illustrate the features and applications in which this is used. Name any two commonly available instrumentation amplifiers. [Section 3.1]  [16]

Q.12 Design a first order low pass filter for cut-off frequency of 2 kHz and pass band gain of 2. [Section 3.6]         [8]

May-14

Q.13 Explain the operation of op-amp as a clamper. [Section 3.22] [8]

Q.14 Explain the working of peak detector using operational amplifier. [Section 3.23]  [8]

Q.15 With neat diagram explain the working of dual slope type ADC. [Section 3.26]    [8]

(Regulation 2013)

Dec.-14

Q.16 Derive the expression for the log amplifier with necessary diagram. [Section 3.2]  [5]

May-15

Q.17 Discuss the second order high pass filter with its frequency response and design the circuit with the cut off frequency of 5 kHz. (Refer section 3.9 and example 3.9.1) [8]

Q.18 With a neat circuit diagram, explain in the working of Schmitt trigger using op-amp. (Refer sections 3.28)        [8]

Q.19 Explain the working of instrumentation amplifier. [Section 3.1.2] [8]

Q.20 With neat circuit diagram explain the operation of R-2R D/A converter. [Section 3.25.2.2]          [8]

Dec.-15

Q.21 Design a circuit of a clipper which will clip the input signal below a reference voltage. (Refer section 3.12.2)     [8]

Q.22 Draw a sample and hold circuit and explain its operation. (Refer section 3.24)     [8]

May-16

Q.23 Design a Schmitt trigger using op-amp. (Refer section 3.28)     [8]

Q.24 Explain the working of successive approximation type A/D converter. (Refer section 3.26.2.2)     [8]

Q.25 Draw the instrumentation amplifier using 3 op-amp and derive its output voltage equation. (Refer section 3.1) [8]

Q.26 Explain the first order low pass butterworth filter with a neat diagram. Derive its frequency response and plot the same. (Refer section 3.6)     [8]

Dec.-16

Q.27 Write a note on logarithmic and antilog amplifier using op amp. (Refer sections 3.2, 3.3)          [13]

Q.28 Explain the working of SAR type and Flash type A/D converter. (Refer sections 3.26.2.2 and 3.26.2.3)        [13]

May-17

Q.29 With diagram explain the following applications of op amp.

i) Clippers and clampers (Refer sections 3.21 and 3.22)

ii) Triangular waveform generator. (Refer section 3.20) [13]

Q.30 Explain the working principle of R-2R ladder type D/A converter. (Refer section 3.25.2.3)          [13]

Q.31 Sketch the implementation of an instrumentation amplifier using three opamps. Explain the principle of operation and its applications. (Refer sections 3.1.2 and 3.1.3)         [15]

Dec.-17

Q.32 With neat diagram, explain the working principle of

i) R-2R ladder type DAC (Refer section 3.25.2.3)

ii) Weighted resistor DAC (Refer section 3.25.2.1)          [13]

Q.33 Draw and explain the circuit of a second order Butterworth low pass filter and derive its transfer function. (Refer section 3.7)  [13]

May-18

Q.34 Explain the operation of a triangular waveform generator using op-amp. (Refer section 3.20) [9]

Q.35 Discuss the operation of successive approximation type A/D converter. (Refer section 3.26.2.2)     [11]

Q.36 What are the advantages of continuous type A/D converter over counter type A/D converter ? (Refer section 3.26)     [2]

Note All the examples asked in the previous university papers are solved and included in the chapter.