List of lab experiments of Digital electronics of first Sem Diploma- EC

Department of Technical EducationDiploma Programme in Electronics and Communication Engineering/ Electronic Instrumentation & Control Engineering  1st SEMISTER
SUBJECT : DIGITAL ELECTRONICS LAB
Common to E&C, EI&C, CS&E and IS&E
Lab Experiments :
A1 Familiarization of Digital trainer kit, IC tester, Logic pulser, logic probe
2Study of IC Manual and familiarization of Ics and IC familiesB1Familiarization of logic gates using Ics
a) 7400      b) 7402      c) 7404   d) 7408    e) 7432  f)  7486
2  Realization of NOT, OR, AND, NOR, EX-OR and EX-NOR gates using NAND gate
3  Realization of NOT, OR, AND, NOR, EX-OR and EX-NOR gates using NOR gate
4  Implementing and verifying Boolean Expression using K-map
5  Verification of DeMorgan's theorem and realization of the given expression using Demorgan's law
6  Implementing Half Adder and Full Adder using logic gates
7  Implementing Half Subtractor and Full Subtractor using logic gates
8  Verification of truth table of Flip-Flop
i )  Clocked RS FF using NAND Gates
ii)  JK FF Using IC 7476
iii)  T and  D FF using  IC 7476.
9     Realize Binary to Gray code converter using IC 7486
10   Realize Gray to Binary code converter using IC 7486
11   Realize parity generator and checker using IC 7486
12   Familiarization of IC 7483 with 4bit  addition
13   Realize 2-bit comparator using logic gates and familiarization of IC 7485
14   Interface  7 segment display with IC 7447 / 7448 decoder .
15   Verify the truth table of 1:8 Demultiplexer  and 8:1 multiplexer using IC 74138 and 74151respectively
16   Verify the truth table of priority encoder using IC 74147
17   Realize and verify the truth table of 4:1 Multiplexer using 2:1 Multiplexer
18   Verify the truth table of Shift Reigister 7495 ( SISO, SIPO, PISO, PIPO)
19   Veirfy the truth table of a) up-down counter using IC- 74193 b) Decade counter using IC-7490REFERENCES :
DIGITAL ELECTRONICS PRACTICE WITH INTEGRATED CIRCUITS
R.P.JAIN AND MMS ANAND
SCHEME OF VALUATION
Note: Pin diagrams of IC's shall be  provided to the students .
1   Record
2   Write up any Two Experiments (Circuit Diagram,Truth Table Expression)
3   Conduction any one Experiment
4   Result
5   Viva-Voce

Model question paper of DIGITAL ELECTRONICS of Diploma 1st Sem - E C

            MODEL QUESTION PAPER          
        FIRST SEMESTER          
           SUBJECT :  DIGITAL ELECTRONICS-1          
        Common to E&C ,EI&C,CS&E and IS&E.           
        SUBJECT: DIGITAL ELECTRONICS-I          
        TIME :3 HRS                                                                         MAX.MARKS :100          

                  
        Note:  1)Section A is  compulsory.          
                  2) Answer any two main questions from each of the remaining Sections          
                  

        SECTION:  A          

                  
1    a.    Fill in the blanks with suitable words                                    5X1      
    (i)    The radix of hexadecimal number system is _______________          
    (ii)    The number of flip-flops required for decade counter is ______________          
    (iii)    Race around condition is eleminated in ________________ flip flop          
    (iv)    An example for unsaturated logic _________ Ics          
    (v)    The SISO shift register with feed back _________ counter          
                  
    b.    Write a note interfacing between TTL and CMOS Ics                         5      
                  

        SECTION:  B          

                  
2    a.    Define the radix of a number system    2      
    b.    Convert the following from Binary to Decimal number system    8      
         (i) 11001001 (ii) 1110.1111          
        (iii) 11001111 -->( )h   (iv) 1AF--> ( ) D          
    c.    Subtract the following using 2's complemnet method          
        (i) 1FE2- 0AC2            (ii) 412.6 - 255.0    5      
                  
3    a.    Convert the following gray code to binary code (i) 110101 (ii) 111110     2      
    b.    Convert the following Excess-3 code to binary code (i) 11011 (ii) 10110   3      
    c.    Differentiate analog and digital signals                                                          5      
    d.     Expalin AND logic with symbol,  logic expression and truth table, .             5      
                  
4    a.    Define Noise Margin and power dissipation with reference to logic families  4      
    b.    State Associative and Distributive laws of Boolean Algebra                       4      
    c.    Simplfy the following expressions and realize the same using gates          
        (i) A+(BC.(D+E)+ B))     (ii) (A+B).(C+D).(AB+CD)                     7      
                  
                  

        SECTION: C          

                  
5    a.    What is a Full adder? Use K- map to derive logic expressions for its output    7      
    b .   Compare serial and parallel adders                                 3      
    c .   Explain the operation of 4-bit parallel adder                      5      
                  
6    a .   What is a priority encoder?                                 2      
    b.    Write the logic circuit and truth table of Decimal to BCD encoder   8      
    c.    Write the logic circuit and truth table of BCD to seven segment decoder for common
         anode display                                                            5                     
7    a.    What is a multiplexer?                                          2      
    b    Explain the 8:1 multiplexer with the help truth table and logic circuit      6      
    c .   What is the use of De-multiplexer? Write the truth table and logic circuit of
           4:1 De-multiplexer                                                     7      
                  

        SECTION: D          

                  
8    a.     Differentiate between combinational and seqential circuits         3      
    b .   Explain the operation of clocked RS-FF using NAND gates         6      
    c.    What is meant by Race around condition? How it is overcome?    7      
                  
9    a .   Explain the logic diagram, truth table and timing diagram,
       the operation of 4-bit ripple counter                              8      
    b.    What do you by modulus of counter?                         2      
    c .   Explain how decoding gates can be used for construction of mod-11 counter   5      
                  
10    a .   Explain with logic diagram, truth table and timing diagram,
              the operation of a 4-bit shift counter  8    
    b.    Write the logic diagram of a 4-bit shift register.
           Write the truth table and timing diagram for a 4-bit SISO register for a data of 1011  ( 7 )

Model question paper of ELECTRONIC MEASUREMENTS AND INSTRUMENTATION of Diploma 3rd Sem - E & CE

DERARTMENT OF TECHNICAL EDUCATION

DIPLOMA COURSE IN ELECTRONICS & COMMUNICATION ENGG.

THIRD SEMESTER

    ELECTRONIC MEASUREMENTS AND INSTRUMENTATION                                                 

MODEL QUESTION PAPER

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                                                                           5 X 1 = 5

1.                  Wein bridge is normally used for the measurement of ________

2.                  An example of inverse transducer is__________.

3.                  _________coating is used to collect secondary electrons in CRT.

4.                  The standards maintained at National standard labs are called ________

5.                  Errors due to human mistakes are called ____________.

  (b) Write a note on IEEE488 GPIB interfacing.          5

SECTION-II

2 (a)  Explain with  a block diagram, the operation of a generalized electronic

           measurement system.                  9

     (b)  Define (i) accuracy (ii) Precision (iii) Error w.r.t measurements     6

3(a) A 0-100Volt Voltmeter has an accuracy of 1% of full scale reading.
    If the voltage measured by this instrument is 83 volts, find the limiting error in percentage   5

   (b) Explain the use of wein's bridge in frequency measurement.
     Derive the equation for unknown frequency.       10

4(a) Explain the operation of the basic PMMC movement .     7

   (b) Explain the basic principle of  Electrodynamometer .        6

    (c) Define voltmeter sensitivity.                      2

SECTION-III

5(a) With the help of a block diagram, explain the operation of Digital Storage

        Oscilloscope.           9

(b) What are lissajous patterns?. Explain how they can be used for phase difference

       measurement.        6

6(a) Explain the working of Heterodyne wave analyzer.     6

   (b)  list the uses of Spectrum analyzer.                 3

   (c) What are active , passive and inverse transducers? Give example for each.   6

7(a)     Explain the principle of LVDT displacement transducer.   6

  (b)  List the advantages and disadvantages of thermistors.   4

   (c)  write a note on digital optical Encoders.             5

                                                                                                                                   

SECTION-IV

8(a) Explain the working of Chopper DC amplifier type voltmeter.       7

   (b) Explain the operation of Q meter.              8

9(a) Explain the working of Successive approximation type DVM.     10

   (b) List the advantages of digital instruments.      5

10(a) Explain the principle of digital time interval measurement.    5

     (b) List the precautions to prevent instrument damage.    5

     (c)Write a note on shielding.          5

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 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