2011 Calicut University B.Tech Computer Science and Engineering Third semester b.tech degree examination 2011 ,electronic circuits Question paper

Third Semester B.tech Examination

CS09 304 ELECTRONIC CIRCUITS

PART A
Answer all questions 5*2=10 marks

1.Write any 4 characteristics of LED.
2.What is duty cycle?
3.State the applications of comparator.
4.What is a flip-flop?
5.What are volatile and non-volatile memories?

PART B
Answer any 4 4*5=20 marks

6.Draw a equivalent circuit of PIN diode and explain it.
7.What is vericap?Explain with a neat sketch.
8.Explain the advantages of Digital Switching.
9.Differentiate VLSI from ULSI.
10.Explain the features of MOS flip-flop.
11.Explain the significance of timing circuits in ADC.

PART C
Answer section a or b

12
a)Explain the construction and V-I characteristics of Tunnel diode with a neat energy band diagram.
Or
b)Explain the following with neat diagrams.
1)schmitt trigger
2)step recovery diodes

13.
a)Explain the dual gate D-MOSFETs with neat diagrams
Or
b)Explain the principles of waveform conversion and waveform generation using op-amps with neat sketches.

14.
a)Draw a neat circuit diagram of CMOS NAND gate.Explain is principle of operation.
Or
b)Explain in detail the concepts of MSI,LSI,VLSI with neat sketches.
15.
a)Explain in detail
1)SRAM and DRAM
2)Memory expansion
Or
b)Explain the principle of operation of single slope and dual slope ADC with neat diagrams in detail.