Dr. D. Y. Patil Educational Enterprises Charitable Trust’s Dr. D. Y. Patil School of Engineering & Technology Dr. D. Y. Patil Knowledge City, Charholi (Bk), Lohgaon, Pune – 412 105 DEPARTMENT OF ELECTRONICS & TELE-COMMUNICATION ENGINEERING Assignment-1(Unit-1) Sub: Basic Electronics Engineering Academic year-2014-15 Subject Teacher: Prof.S.K.Gawade Q.1 A half wave rectifier circuit connected to a 230 V ,50Hz source through a transformer of turn ratio of 10:1 .The rectifier circuit is to supply power to a 500Ω ,1 watt resistor & diode forward resistance is 100Ω.calculate :1. Maximum, average & rms value of current & voltage [6M] 2. Compare HWR , FWR & Bridge rectifier. [6M] 3. Draw a neat circuit diagram of bridge rectifier with capacitor filter & explain its operation with appropriate waveforms [6M] 4.Explain the following –[8M] 1.Clipper 2. Clamper 3. Multiplier 5. Compare the performance of half wave rectifier & full wave rectifier with respect to following parameters— [8M] 1. Idc 2. Vdc 3 . Irms 4. Rectifier efficiency 5. TUF 6. PIV of diode used 7. Ripple factor 6. Explain Zener diode with its characteristics [6M] 7. Explain Zener diode as a regulator [6M] 8.For a Zener voltage regulator ,if Iz(min)= 2 mA, Izmax=20mA,Vz=4.7 V. Determine the range of input voltage over which output voltage remains constant .Rs=1 KΩ,RL=1KΩ, Zz=0Ω. [8M] 9. Explain principle of operation of LED [4M] 10. Explain principle of operation of photodiode [4M] BXE Assignment[2014-15]SKG FE(All) Page 1/6 Dr. D. Y. Patil Educational Enterprises Charitable Trust’s Dr. D. Y. Patil School of Engineering & Technology Dr. D. Y. Patil Knowledge City, Charholi (Bk), Lohgaon, Pune – 412 105 DEPARTMENT OF ELECTRONICS & TELE-COMMUNICATION ENGINEERING Assignment-2(Unit-2) Sub: Basic Electronics Engineering Academic year-2014-15 Subject Teacher: Prof.S.K.Gawade 1 State the biasing conditions required for the three regions of operation of a BJT [4M] 2. Draw & explain input & output characteristics of a transistor in CB configuration [6M] 3. Draw & explain input & output characteristics for transistor CE configuration [6M] 4. Calculate the values of IC & IE for a BJT with αdc=0.97 & IB= 50µA.Determine βdc of the device.[4M] 5. What is βDc of BJT I IC=20.5mA & IE= 20.8 mA what is αdc if IC=5.35mA & IB=50µA.[4M] 6. Compare CB, CC & CE configuration [6M] 7. Explain DC load line [6M] 8. Explain BJT as a switch Draw & neat circuit diagram for a single stage CE amplifier [6M] 9. Explain the construction of Enhancement type n-channel & p-channel MOSFET [8M] 10. Compare BJT & EMOSFET [6M] 11. F3or a BJT as a switch why CB & CC configurations are not preferred? [3M] BXE Assignment[2014-15]SKG FE(All) Page 2/6 Dr. D. Y. Patil Educational Enterprises Charitable Trust’s Dr. D. Y. Patil School of Engineering & Technology Dr. D. Y. Patil Knowledge City, Charholi (Bk), Lohgaon, Pune – 412 105 DEPARTMENT OF ELECTRONICS & TELE-COMMUNICATION ENGINEERING Assignment-3(Unit-3) Sub: Basic Electronics Engineering Academic year-2014-15 Subject Teacher: Prof.S.K.Gawade 1 What is OP-Amp? Draw & explain functional block diagram of an op-amp [6M] 2 Explain the following parameters of op-amp & write typical values for IC 741. [6M] a. CMRR b. Slew Rate c. PSRR d. I/P offset voltage e. I/P offset current 3 Derive an expression for voltage gain of a closed loop non inverting & Inverting amplifier using opAmp. [8M] 4 For inverting amplifier using op-amp Rf=100KΩ,R1=10KΩ,Vcc=+-10V,vi=2v dc.Calculate a. output voltage b. Is the result in part 1 is practically possible? Justify [6M] 5 Draw neat circuit diagram of Ideal Differentiator & Ideal Integrator circuit with its operation [6M] 6. Explain Op-Amp as a summing & Difference Amplifier [6M] 7. Explain Voltage follower circuit BXE Assignment[2014-15]SKG FE(All) Page 3/6 Dr. D. Y. Patil Educational Enterprises Charitable Trust’s Dr. D. Y. Patil School of Engineering & Technology Dr. D. Y. Patil Knowledge City, Charholi (Bk), Lohgaon, Pune – 412 105 DEPARTMENT OF ELECTRONICS & TELE-COMMUNICATION ENGINEERING Assignment-4(Unit-4) Sub: Basic Electronics Engineering Academic year-2014-15 Subject Teacher: Prof.S.K.Gawade 1 State & Prove De-Morgan’s theorems [6M] 2 List the universal gates & derive basic gates using any universal gate. [6M] 3 Explain in detail the working of full adder with the help of truth table & give equation for sum & carry. [6M] 4 What is multiplexer & Demultiplexer? What is the relation between number of select lines & inputs? [8M] 5 Explain the operation of 4 bit PIPO shift register [6M] 6 Draw & Explain the block diagram of Microprocessor & Microcontroller [8M] 7 What is counter? Explain 3 bit Asynchronous counter with timing diagram [6M] BXE Assignment[2014-15]SKG FE(All) Page 4/6 Dr. D. Y. Patil Educational Enterprises Charitable Trust’s Dr. D. Y. Patil School of Engineering & Technology Dr. D. Y. Patil Knowledge City, Charholi (Bk), Lohgaon, Pune – 412 105 DEPARTMENT OF ELECTRONICS & TELE-COMMUNICATION ENGINEERING Assignment-5(Unit-5) Sub: Basic Electronics Engineering Academic year-2014-15 Subject Teacher: Prof.S.K.Gawade /Prof.A.S.Kulkarni 1. Explain Construction & working of-Diac [8M] 2. Explain Construction & working of-Triac [8M] 3. Explain Construction & working of-SCR [8M] 4. Explain characteristics of – [8 M] 1. Diac 2. Triac 3. SCR 5. Explain weighing machine with block diagram [8 M] 6. Explain LVDT with block diagram [8 M] 7. Explain Digital Thermometer with block diagram [8M] 8 Compare Active & Passive Transducer [6M] 9. Explain Characteristics of Transducers [8 M] 10. Explain the construction of RTD [8M] 11. Comparison between Thermocouple, RTD & Thermistor [8M] 12. Explain the construction & working principle of a phototransistor [8M] 13. Explain criteria of selecting a Transducer [8M] 14. Compare SCR & Triac [8M] 15. Draw & explain block diagram of instrumentation system [8M] BXE Assignment[2014-15]SKG FE(All) Page 5/6 Dr. D. Y. Patil Educational Enterprises Charitable Trust’s Dr. D. Y. Patil School of Engineering & Technology Dr. D. Y. Patil Knowledge City, Charholi (Bk), Lohgaon, Pune – 412 105 DEPARTMENT OF ELECTRONICS & TELE-COMMUNICATION ENGINEERING Assignment-6(Unit-6) Sub: Basic Electronics Engineering Academic year-2014-15 Subject Teacher: Prof.S.K.Gawade 1 Draw & Explain the block diagram of an electronic communication system [8M] 2 What is the need of Modulation? What are the different types of modulation [8M] 3 Draw waveforms & explain amplitude modulation technique. Write the expression of AM & define modulation index. [8M] 4 Draw & explain the block diagram of GSM [8M] 5 What is the importance of modulation index. Draw the AM waveform fora) Linear Modulation b) Over Modulation c) Modulation Index =0 [8M] 6 Explain the basic structure of mobile phone system Explain Concept of cellular? Give comparison between AM and FM [8M] 7 With respect to FM explain--[8M] 1. Frequency deviation 2. Modulation Index 3. Deviation ratio 4. Frequency spectrum of FM 8 Write a note on co-axial cable & optical fiber cable. [8M] 9 Draw the AM waveform for modulation index [8M] 1) Modulation index =0 2) Modulation index =1 3) Modulation index >1 4) Modulation index <1 10 Draw and explain IEEE electromagnetic spectrum [8M] 11 Write a note on Wireless communication [8M] 12 Explain the working of cellular telephonic system. [8M] 13Write the expression of amplitude modulation .Define modulation index & draw waveform of AM [8M] 14 Compare coaxial cable & Optical fiber cable [6M] 15 What is baseband communication .Explain limitation of baseband communication & explain need of modulation [8M] BXE Assignment[2014-15]SKG FE(All) Page 6/6 BXE Assignment[2014-15]SKG FE(All) Page 7/6
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