Loyola College Applied Electronics Question Papers

Loyola College B.Sc. Physics April 2008 Applied Electronics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

           B.Sc. DEGREE EXAMINATION – PHYSICS

FG 8

THIRD SEMESTER – APRIL 2008

PH 3106 – APPLIED ELECTRONICS

 

 

 

Date : 29-04-08                  Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

Part – A

Answer ALL Questions.                                                                                            (10×2=20)

  1. With neat Fermi diagrams explain what happens to the Fermi level when donors are added to an intrinsic semiconductor.
  2. Write a note on Light Emitting Diodes.
  3. State any four properties of an ideal Op-amp.
  4. With a neat diagram, explain how an Op-amp may be used as an integrator.
  5. What are don’t care states in K-maps?
  6. Simplify using Boolean identities.
  7. Discuss the racing condition in a JK flip-flop.
  8. Draw the circuit diagram of a three bit ring counter.
  9. Write a note on the registers of the processor.
  10. Write a note on the memory hierarchy in a computer.

Part – B

Answer any FOUR.                                                                                                   (4×7.5=30)

  1. With neat diagrams explain the working of common emitter and common base transistor amplifiers.
  2. With a neat diagram, explain the working of a four bit binary weighted D/A convertor.
  3. With neat diagrams explain how NAND gates may be used as universal building blocks.
  4. With a neat diagram explain the working of an RS flip-flop.
  5. Write notes on Cache and Virtual memories of a computer.

Part – C

Answer any FOUR.                                                                                                   (4×12.5=50)

  1. With a plot of the volt-ampere characteristics of a zener diode, explain how it may be used as a voltage regulator.
  2. With neat diagrams, explain the working of a four bit counter A/D converter.
  3. With circuit neat diagrams, explain the working of a full adder and a half subtractor.    (7+5.5)
  4. With neat circuit and wave diagrams explain the working of a four bit ripple counter.
  5. Write notes on RAM, ROM, EEPROM, UVEPROM. (3+3+3+3.5)

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Loyola College B.Sc. Physics April 2012 Applied Electronics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

THIRD SEMESTER – APRIL 2012

PH 3106 – APPLIED ELECTRONICS

 

 

Date : 28-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART A

 

Answer ALL questions                                                                                             (10 x 2 = 20)

 

  1. What is meant by Fermi level?
  2. Calculate the current amplification factor α given IE = 2mA, IB = 20μA, IC = 1.98 mA.
  3. Calculate the output voltage of an inverting amplifier when Vi = 1.5V, Ri=10 kΩ, Rf=20 kΩ.
  4. State any two characteristics of an ideal OP-AMP.
  5. Show that A( + B) = A.B
  6. What is a decoder?
  7. Write a short note on T flip flop.
  8. Write a short note on mod 3 counter.
  9. What is hit ratio?
  10. What is an instruction code?

 

PART B

 

Answer any FOUR questions                                                                                              (4 x 7.5 = 30)

 

  1. (a) Discuss the formation of depletion layer in a PN junction diode (3.5)

(b) What happens to the depletion layer when the diode is forward and reverse biased?   (4)

  1. Explain the working of an inverting summing amplifier with a neat diagram.
  2. State and prove DeMorgan’s theorems.
  3. With neat diagram and truth table discuss the working of Johnson’s counter.
  4. Discuss in detail with a neat diagram a 4 input multiplexer.

 

PART C

 

Answer any FOUR questions                                                                                              (4 x 12.5 = 50)

 

  1. Describe the operation of a NPN transistor in common base mode. Obtain the input and output characteristics for the same.
  2. What is A/D conversion? Explain with a neat diagram the function of a dual slope A/D converter.
  3. Simplify using K – map F(A,B,C,D) = Σ (2,3,4,5) + (10,11,12,13,14,15). Realize the Boolean expression using NAND-NAND network.
  4. What is a ‘race around’ condition in a JK Flip flop? Explain in detail how it is solved using JK master – slave Flip flop.
  5. (a) Explain the working of a full adder using circuit diagram and truth table (7.5)

(b) Discuss in detail about computer registers     (5)

 

 

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Loyola College B.Sc. Computer Science Nov 2011 Applied Electronics Question Paper PDF Download

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Loyola College B.Sc. Computer Science Nov 2013 Applied Electronics Question Paper PDF Download

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Loyola College B.Sc. Computer Science April 2016 Applied Electronics Question Paper PDF Download

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Loyola College B.Sc. Computer Science Nov 2016 Applied Electronics Question Paper PDF Download

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Loyola College B.Sc. Computer Science Nov 2006 Applied Electronics Question Paper PDF Download

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                        LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – COMPUTER SCIENCE

AK 03

THIRD SEMESTER – NOV 2006

CS 3101 – APPLIED ELECTRONICS

(Also equivalent to CSC 101)

 

 

Date & Time : 28-10-2006/9.00-12.00    Dept. No.                                                       Max. : 100 Marks

 

 

PART-A

Answer all Questions.                                                             10 x 2 = 20

  1.  What is a Semiconductor ?
  2. What do you mean by barrier voltage ?
  3. Write any four important characteristics of an ideal operational amplifier.
  4. Define CMRR.
  5. State DeMorgan’s Theorem.
  6. Expand A + BC as minterms.
  7. What do you mean by race around condition.
  8. What are the four different modes of operation of  shift register.
  9. Define main memory and auxillary memory.
  10. Define Hit Ratio.

PART-B

Answer all Questions.                                                             5 x 8 = 40

 

11.a. Explain the different modes of operation of a Transistor.

(OR)

  1. Explain the operation of NPN transistor with a neat sketch.

12.a. Explain the Summing amplifier with an example.

(OR)

  1. Explain the Flash Analog to Digital Convertor.

13.a. Reduce the following using K map:

  1.     ∑ (0,2,5,7,8,10,13,15) .
  2. ABC +  ABC  +  ABC  +  ABC .

(OR)

  1. What is Multiplexer ? Explain any one Multiplexer with neat diagram.

14.a. Explain the RS flip flop and give the table.

(OR)

  1. Explain the Shift Left Shift Register using D flip flop.

15.a. Explain the various registers used in basic computer.

(OR)

  1. Explain any two mapping procedure of Cache memory.

 

PART-C

Answer any TWO Questions.                                                 2 x 20 = 40

 

16.a.With necessary diagram explain the reverse characteristics of a PN junction diode.

b.Explain the Weighted resistor Digital to Analog Convertor.

 

17.a.Explain the Half Subtractor and Full Subtractor.

b.Describe  the working of  Johnson Counter with neat diagram.

 

18.a.Explain the Paging technique in the Virtual memory.

b.Explain 3 x 8 Decoder with necessary diagram.

 

 

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Loyola College B.Sc. Computer Science April 2007 Applied Electronics Question Paper PDF Download

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       LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – COMPUTER SCIENCE

HC 04

THIRD SEMESTER – APRIL 2007

CS 3101 – APPLIED ELECTRONICS

 

 

 

Date & Time: 21/04/2007 / 1:00 – 4:00   Dept. No.                                            Max. : 100 Marks

 

 

PART – A

Answer all questions                                                                           10 x 2 = 20

 

  1. What is a semiconductor?
  2. Give any four applications of LED.
  3. Mention any four important characteristics of an ideal op-amp.
  4. Define CMRR.
  5. State and prove De Morgan’s theorem.
  6. What is Multiplexer?
  7. How JK-flip flop can be converted to D and T-flip flop.
  8. What are the different modes of operation in a shift register?
  9. Write any four memory reference instructions.
  10. Name the different types of ROM.

 

 

PART – B

Answer all questions                                                                     5 x 8 = 40

 

11.a. With a neat diagram explain the characteristics of PN-junction diode.

(OR)

  1. Explain the different modes of operation of a transistor.

 

12.a. Explain the op-amp as summing amplifier.

(OR)

  1. Explain the weighted resistor D/A convertor.

 

13.a. Simplify using K-map

  1. Σ(0,2,8,9,10,11,12,13,14,15)
  2. Σ(0,1,3,5,7,9,11,12,13,14,15)

(OR)

  1. What is a Decoder? Explain 3 – 8 decoder with neat diagram.

 

14.a. Explain the shift right shift register with neat diagram.

(OR)

  1. Explain Johnson’s counter with a neat diagram.

 

15.a. Explain computer register configuration.

(OR)

  1. Explain the various components in memory ierarchy.

 

 

 

 

 

 

 

 

PART – C

 

Answer any TWO of the following:                                             2 X 20 = 40

(Each question carries TEN marks).

 

16.a. With necessary diagram explain the types of semiconductors.

  1. Explain flash A/D convertor.

 

17.a. Explain the full adder and full subtractor with necessary table and diagram.

b.What is race around condition? How this can be avoided using JK master slave

flip flop.

 

18.a.Explain the Associative mapping and direct mapping technique of cache

memory.

b.Explain NAND as an universal building block.

 

 

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Loyola College B.Sc. Computer Science April 2010 Applied Electronics Question Paper PDF Download

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Loyola College B.Sc. Computer Science Nov 2010 Applied Electronics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – COMPUTER SCIENCE

THIRD SEMESTER – NOVEMBER 2010

PH 3106 / CS 3101 – APPLIED ELECTRONICS

 

 

 

Date : 10-11-10                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART A

ANSWER ALL QUESTIONS                                                                                            10 x 2 = 20

  1. What is doping in extrinsic semiconductor?
  2. What is a depletion layer?
  3. What is the output voltage of a summing amplifier when V1 = 2V, V2 = 1V, R1 = 10 kΩ ,
    R2 = 10 kΩ , Rf = 10 kΩ.
  4. Differentiate analog and digital signals.
  5. Write a short note on program counter.
  6. What is a Flip flop?
  7. Find the complement of .
  8. Draw the block diagram of a T-Flip flop using JK Flip flop and give its truth table
  9. Simplify using K – map Y = F(A,B) = Σ (1,2,3 )
  10. Define Hit ratio.

 

PART B

ANSWER ANY FOUR QUESTIONS                                                                               4 x 7.5 = 30

  1. Write short notes on (i) intrinsic semiconductor (ii) extrinsic semiconductors (iii) PN junction diode
  2. Explain the working of an OP-AMP inverting amplifier with a circuit diagram.
  3. With a neat diagram and truth table discuss the working of a Johnson’s counter
  4. Explain the working of a full adder with circuit diagram and truth table
  5. (a) Differentiate between ROM and RAM     (2)

(b) Explain various types of ROM                       (5.5)

 

PART C

ANSWER ANY FOUR QUESTIONS                                                                               4 x 12.5 = 50

  1. Describe the operation of a NPN transistor in common emitter mode. Obtain the input and output characteristics for the same.
  2. Explain with circuit diagram, the working of an op-amp based 4 bit R-2R ladder D/A converter.
  3. (a) Simplify using K – map Σ (0,2,5,7,8,9,10,11,12,13,14,15)                           (8.5)

(b) Show that                        (4)

  1. (a) Explain the shift left shift register with a neat diagram                                (6.5)

(b) Explain the working of a D-Flip flop with its truth table                              (6)

  1. (a) Explain in detail the timing and control in a basic computer. (6)

(b) Explain the various components in memory hierarchy                                   (6.5)

 

 

 

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