Friday, 2 December 2011

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 Av1=10, Av2=15, Av3=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

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