Model question paper of Analog Electronics of Diploma 3rd Sem - E & CE

DERARTMENT OF TECHNICAL EDUCATION

DIPLOMA COURSE IN ELECTRONICS & COMMUNICATION ENGG.

THIRD SEMESTER

                                                                                                                                              

MODEL QUESTION PAPER

ANALOG ELECTRONIC CIRCUITS

MAX MARKS:100                                                                                      TIME :3Hrs

INSTRUCTIONS:-

1      SECTION-I IS COMPULSORY                                                                                                                         

2     ANSWER ANY TWO FULL QUESTIONS FROM EACH OF THE REMAINING SECTIONS.

         

SECTION   I

1 A)    FILL IN THE BLANKS WITH APPROPIRATE WORDS:-                          1X5

I)         The Ripple Factor of Bridge rectifier is  ______________.

ii)        The Cross over Distortion is overcome in _____________amplifier.                                 

iii)       The input impedence of an Ideal OPAMAP is ______________.

iv)       PLL stands for  ______________.                                                                                  

v)        Oscillator  uses _______________Feedback.                                                                  

                                                                                                                                              

B)       Write a  note on IC Switching Regulators.                                                    5

                                                                                                                                              

SECTION :II

2 a)   Define the following terms                                                                                             

 I)  Ripple Factor. II)Regulation.                                                                                                                4                                 

b)    Explain  block diagram regulated Power Supply.                                      6

c)    Explain  operation of Bridge Rectifier   with a neat circuit diagram.             5

                                                                                                                                              

3 a)   Explain the circuit of Series Voltage Regulator.                                        6

b)     Explain the need for filters in rectifiers.                                                       5

c)     Mention the advantages of SMPS.                                                            4

         

4a)   Explain functional block diagram of  IC 555 Tmer.                                       10

b)   Explain  the operation of Collpits  Oscillator.                                                  5

SECTION : III

5a)  Define Biasing . Explain Voltage divider Bias with a neat Circuit diagram         6

b)  Give the detailed classification of Amplifiers.                                                  4

c)   Explain the frequency response of RC coupled amplifiers.                               5

                                                                                                                                              

6a)  Explain the working of complementary push pull power amplifier with a neat circuit.    7

b)   A cascaded voltage amplifier having Gains A_v1=10, A_v2=15, A_v3=20  Determine 

overall Voltage gain and Gain in Decibels.                                                         4

c)    Explain double ended Clipper with a neat circuit diagram.                              4

                                                                                                                                              

7a)   Explain the operation of RC Differentiator and Integrator Circuit with waveforms. 10

b)   List the application of Clippers and Clampers.                                       5

SECTION :IV

8a)  Draw and explain block diagram of LM741 opamp.                                5

b)  List the ideal characteristics of opamp.                                                  5

c)  Explain the operation of Schmitt Trigger circuit using OPAMP.                5

                                                                                                                                              

9a) Define the following parameters w.r.t OPAMP

   i)   PSRR         ii)  CMRR       iii) Gain-Bandwidth product

iv) Slew rate     v) Input and Output Impedance.                              10

b) Describe the Instrumentation Amplifier circuit.                                   5

                                                                                                                                              

10a)  Explain the I st order Butterworth Active Low Pass using OPAMP.         5

b)  Explain the circuit of Voltage to frequency Converter .                            5

c)  Explain the operation of PLL .                                                             5