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

DERARTMENT OF TECHNICAL EDUCATION

DIPLOMA COURSE IN ELECTRONICS & COMMUNICATION ENGG.

THIRD SEMESTER

                                                                                                                                              

MODEL QUESTION PAPER

Digital Electronics and Introduction to Microprocessor

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 suitable words                                      1X5   
    (i)    The number of comparators required to build an 8-bit flash
        ADC is--------------       
    (ii)    Register which keeps track of instruction execution is---------   
    (iii)    MC68000 is a  ---------- bit processor       
    (iv)    RISC stands for ----------       
    (v)    A basic memory cell in a DRAM is  ----------       
               
    b    Write a note on Generic Array Logic                        5   

               
    SECTION:  II       

               
2    a    Explain the circuit operation of TTL Nand gate for low and
        high state                                                                            10   
    b    What three characteristics of real wires add up to distort
        signals that move through them                                        3       
    c    What is the IEEE/ANSI symbol for tristate outputs     2   
               
3    a    Explain the working of Binary ladder network for converting
        the digital to analog data                                                                8
    b    Define the terms Resolution & Accuracy as applied to DAC    4   
    c    Determine the resolution of a 12-bit A/D converter having a
         full scale analog input voltage of 5v.                                             3 
                   
4    a    Explain the working of Successive approximation type ADC
        with block diagram     8
        the digital to analog data   
    b    Define quantization error in ADC’s    3   
    c    Explain the working of low frequency function generator using
        DAC              4   
                                                                          SECTION: III       
               
5    a    Define the terms i) memry cell ii) memory word iii) Access
        time     6           
    b    With A CPU memory connection block diagram explain the
         steps that take place when the CPU writes to memory    6   
    c    Explain the construction of basic SRAM memory cell    3   
               
6    a    Two 16MB RAMs are used to build a RAM capacity of 32MB.
         Show the configuration and also state the address inputs for
        which the two RAMs will be active. The two RAMs have
        common i/o pins, a write enable i/p that is active low and a
        active high chip select i/p.                 8   
    b    Write a note on Cache memories    4
    c    mention the differences between fixed logic and
        programmable logic                           3   
               
7    a    With neat block diagram explain the internal architecture of
        CPLD    8
    b    Implement the Boolean function Y= BC+ A C+ABC using
        PAL    5
    c    Mention the number of i/o lines in PAL device designated as
        PAL-16L8    2   
               
                                                                 SECTION: IV       
               
8    a     Explain the inside of a Microprocessor with a neat schematic    7   
    b    Explain the following addressing modes i) Immediate 
        ii) Indexed    04   
    c    List the differences between RISC and CISC processors    4   
               
9   a    List the differences between Microprocessor and
        Microcontroller                                                                   4

    b    Explain the inside of a Microcontroller with a neat schematic    7   
    c    List the advantages and disadvantages of LCD    4   
               
               
10    a    Explain the operation of seven segment  display.    6 

        b    Explain the operation dynamic scattering type of LCD.   6

        c    Write a note on multiplexed displays.    3 

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

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

   DERARTMENT OF TECHNICAL EDUCATION
DIPLOMA COURSE IN ELECTRONICS & COMMUNICATION ENGG.
THIRD SEMESTER
       
MODEL QUESTION PAPER

ANALOG    COMMUNICATION

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 current at Resonance in Series Resonance circuit is____________.
ii)    The cut off frequency of LPF is given by ____________.   
iii)    The  Attenuator is a  __________Network.
iv)    The characteristic impedance of transmission line is given by_________.   
v)    The modulation index in FM is given by___________.        
       
B)    Write a  note  on Equalizers.                                                            5
       

SECTION :II

2 a)    State  Superposition theorem .    3
   b)    List the steps involved in simplifying the network using the Superposition
          theorem.    5
Define Resonance . Derive the expression for Resonant frequency of Parallel    
       Resonance  circuit.                               7
       
3 a)    Derive the expression for L and C of constant K – T section LPF.    7
b)    Design  constant K - PI section HPF given fc= 2 KHz , Ro= 600 ohms.    5
c)        Find the relationship between  Decibel and Neper.    3
   
4a)    Define Attenuator and mention its Applications.     4
b)    Design   T –type attenuator  given attenuation =10 dB , Ro= 600 ohms.           5
c)          State Norton’s Theorem and write its Equivalent circuit.    6

SECTION :III

5a)    Describe the electrical model of Transmission line..      4
  b)        Explain the following :                       
           (a) Reflection and (b) Standing waves in Transmission Line.      4                           
c)        Derive the Relationship between SWR and Reflection Coefficient.      7  

6  a)   Define the following terms w.r.t Antenna :                       
               (a) Polarization,                            
               (b) Isotropic radiator                           
               (c) Radiation pattern                            
               (d) Directive gain                           
               (e) Directivity                                       10
b) Explain the working of broadside  array.               5
                                
7 a)     Explain  Single stub matching .                       5 
b)     Explain  Ground wave propagation with relevant diagram.     6                   
   c)     Explain propagation in a mobile/portable environment .        4                                    

SECTION : IV

8a)    Explain the need for Modulation.      4
b)    Explain amplitude modulator circuit using diode.         5
c)       Sketch the FM wave. Write mathematical expressions for the following:               
              (a) Frequency deviation                       
              (b) Modulation index              6     
                 
9a)    Explain the working of AM Linear diode detector circuit.          5
b)        Explain the working of Foster Seeley discriminator .               6   
c)    Explain the need for pre-emphasis and de-emphasis circuits.       4
       
10a)     Explain the working of High level  AM transmitter with a neat block diagram.  8     
    b)     Explain the working of FM receiver with Block Diagram.         7

HTML Tutorial - 12

How to create a Horizontal frameset in Html Script ?

Solution :
Step 1: Go to Notepad.
Step 2: Copy the HTML script below to the notepad. 

<html>

<frameset rows="25%,50%,25%">

  <frame src="frame_a.htm" />
  <frame src="frame_b.htm" />
  <frame src="frame_c.htm" />

</frameset>

</html>
Step 3: Now save the file with .html format.
Step 4: Close the notepad and now open the saved file in your default browser .
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You will see like the below picture in your browser.

Vertical Frame sets

HTML Tutorial - 11

How to create a vertical frameset in Html Script ?

Solution :
Step 1: Go to Notepad.
Step 2: Copy the HTML script below to the notepad. 

<html>

<frameset cols="25%,50%,25%">

  <frame src="frame_a.htm" />
  <frame src="frame_b.htm" />
  <frame src="frame_c.htm" />

</frameset>

</html>

Step 3: Now save the file with .html format.
Step 4: Close the notepad and now open the saved file in your default browser .
That's it ! 
You will see like the below picture in your browser. 

Vertical frame sets