University Questions with Answers (Long Answered Questions)

University Questions with Answers

(Long Answered Questions)

(Regulation 2008)

Dec.-11

Q.1 Explain the working of emitter coupled differential amplifier in differential mode and common mode. [Section 2.5]   [6]

Q.2 With the circuit diagram explain the operation of an integrator. [Section 2.29] [6] 

Q.3 Explain the application of op-amp as a differentiator. [Section 2.30]   [4]

Q. Briefly explain the external frequency compensation techniques used in op-amp.       [Section 2.33] [16]

Q.5 With the help of circuit diagram explain the operation of V to I converter and its applications. [Section 2.25]     [8]

May-12

Q.6    Draw the circuit of a symmetrical emitter coupled differential amplifier and derive the expression for the CMRR. [Section 2.8]       [16]

Q.7 Draw and explain the circuit of a voltage to current converter if the load is   1) Floating2) Grounded. [Section 2.25]        [8]

Q.8 Draw and explain the summing amplifier. [Section 2.27]  [8]

Q.9 With the circuit diagram explain the operation of an integrator. [Section 2.29] [6]

Dec.-12      

Q.10 What are ideal characteristics of op-amp ? [Section 2.10]        [6]

Q.11 Explain the application of op-amp as a differentiator. [Section 2.30] [4]

Q.12 Derive an expression for the output of a practical differentiator. [Section 2.30]     [6]

Q.13 Briefly explain the external frequency compensation techniques used in op-amp.   [Section 2.33] [16]

May-13     

Q.14 What are ideal characteristics of op-amp 1 [Section 2.10]        [6]

Q.15 Draw and explain practical op-amp equivalent circuit. [Section 2.11]         [6]

Q.16 List the a.c. characteristics of op-amp and define each of them. [Section 2.15] [4]

Q.17 With the help of circuit diagram explain the operation of I to V converter and its applications. [Section 2.26]     [8]

(Regulation 2013)

May-15     

Q.18 What is slew rate and how it can be improved ? (Refer Section 2.13.2)        [6]

Q.19 Explain in detail about the methods of frequency compensation used in operational amplifiers. (Refer section 2.23) [10]

Q.20  Explain voltage to current converter using operational amplifier application of OP-Amp as integrator. (Refer section 2.25 and 2.29) also explain the [8]

Dec.-15

Q.21 What is Slew rate ? List the causes of the slew rate and explain its significance in applications. (Refer section 2.13.2)    [10]

Q.22 Briefly explain the methods used for frequency compensation (Refer section 2.33) [6]

Q.23 Draw and explain the operation of a current to voltage converter.     (Refer section 2.26)[8]

Q.24 What are the limitations of an ordinary op-amp differentiator 1 Draw the circuit of a practical differentiator that will eliminate these limitations.      (Refer sections 2.30.3 and 2.30.4) [8]

May-16

Q.25  Discuss the frequency response characteristics and compensation      of an operational amplifier. (Refer sections 2.15.1 and 2.32)  [16]

Q.26  Explain the application of Op-Amp as differentiator. (Refer section 2.30) [8]

Dec.-16

Q.27 Discuss in detail about the DC and AC characteristics of op amp.     (Refer sections 2.14 and 2.15)    [13]

Q.28  Explain the differential amplifier using op amp. (Refer section 2.28) [13]

May-17

Q.29 With diagram explain the working principle of V/I converter.                      

(Refer section 2.25) [5]

Q.30 Write a note on stability criterion and compensation techniques applicable to op amp circuit. (Refer sections 2.31 and 2.33) [8]

Dec.-17

Q.31 Explain the following terms in an OP-AMP :                           

i) Bias current (Refer section 2.11)  [3]

ii) Thermal drift (Refer section 2.14.1)         [3]

iii) Input offset voltage and current (Refer section 2.11)  [4]

iv) Virtual ground (Refer section 2.20.2) [3]

Q. 32 Draw the circuit of a symmetrical emitter coupled differential amplifier and derive for CMRR. (Refer section 2.8)       [13]

May-18

Q.33 Explain the working principle of emitter coupled differential amplifier. (Refer section 2.5)          [7]

Q.34 How common mode rejection ratio can he increased using constant current source ? (Refer section 2.8.6)        [6]

Q.35 Draw the inverting amplifier circuit of an op-amp in closed loop configuration. Obtain the expression for the closed loop gain. (Refer section 2.21) [7]

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