Veer Narmad South Gujarat University 2011-1st Year B.Sc Electronics SB-0623 - 1 ( old ) - Question Paper
SB-0623
First Year B. Sc. Examination March/April - 2011 Electronics Paper : I (Computer Science)(Basic Electronics)
Time : 3 Hours] [Total Marks : 70
Instructions
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Fillup strictly the details of signs on your answer book.
Name of the Examination :
F. Y. B. Sc.
Name of the Subject:
Electronics Paper : 1
-Section No. (1,2,.....): NIL
Student's Signature
-Subject Code No.:
(2) All questions are compulsory.
(3) Assume date if necessary.
(4) Symbol and abbreviations have their usual meaning
(5) Figures to the right indicate full marks.
1 Answer in brief : 14
(i) Define tolerance of resistor.
(ii) What is Q-factor of capacitor ?
(iii) Define "Operating point".
(iv) Convert 64 decimal in to binary.
(v) What is OR law of Boolean algebra ?
(vi) Write the truth table of NAND gate.
(vii) Compare ROM and RAM.
(a) Describe various types of junction capacitance of diode. 7
(b) Explain construction and types of inductor. 7
OR
2 (a) Explain operation of BJT.
(b) How transistor work as switch.
(c) Give the color code of following resistor :
(i) IK ohms
(ii) 10 K ohms
(iii) 1 M ohms
3 (a) Explain binary addition, subtraction, multiplication
and division with example.
(b) Explain working of photo diode in detail.
OR
3 (a) Prove De' Mogan's theorem.
(b) Prove the following Boolean identity.
(A+B) (A+ C) = A+B C
4 (a) Design full adder and substractor and explain it.
(b) Draw the TTL circuit and explain circuit operation.
OR
4 (a) How Flip Flop working as memory element? Detail
explain JK FF .
(b) Briefly explain EPROM.
5 Write notes : (any two)
(i) Types of capacitor
(ii) MOSFET
(iii) Logic Gate
(iv) Ripple Counter.
SB-0623] 2 [ 400 ]
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