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Dr. Babasaheb Ambedkar Technological University, Lonere
EXTC/Electrical/Computer/IT Department
Semester Examination
Subject: Basic Electronics Engineering (BETX)
Date: 04 MAY '20'7 Semester: I Max. Marks: 60
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Time: 2:00Pm - 5:00Pm
Instructions to students:
- Attempt any five questions from question no. 1 to question no. 6.
- Assume suitable data wherever necessary and mention it clearly.
Q.1
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A. What is the need of Engineering materials? & classify them. [8]
B. Summarise Quantum numbers [4]
Q.2
A. Explain Drift current and diffusion current with neat diagrams [6]
B. A cylindrically shaped section of n-type silicon has a 1 mm length and 0.1 mm² cross sectional area. Compute its conductivity and resistance when it is partly intrinsic material. (The electron and hole density for intrinsic Si is 1.5x10¹° /cm³ Mobility constants for electrons and holes are 1500 cm²/Vs and 500 cm²/Vs respectively). [6]
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Q.3
A. Define Clipper and summarise different types of them. [4]
B. Illustrate Fixed Bias for transistor. [4]
C. Define PIV and describe Full wave Centre tapped Rectifier. [4]
Q.4
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A. Explain various types of fixed resistors [6]
B. Find out the values of capacitors using colour coding
(i) Brown, Black, Orange [3]
(ii) Wide red, Yellow [3]
Q.5 SOLVE ANY TWO:
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A. Write a short note on Galvanometer [6]
B. Classify different types of transducers. [6]
C. Explain piezoelectric transducer. [6]
Q.6
A. Construct EX-OR gate by using NOR gates only [4]
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B. Simplify Y = ABC + A'BC + AB'C + ABC' + A'B'C' [4]
C. (i) Convert (1567.84)10 = ()16 [2]
(ii) Convert Y=AB+A'C+A into standard SOP form [2]
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This download link is referred from the post: DBATU B.Tech Last 10 Years 2010-2020 Question Papers || Dr. Babasaheb Ambedkar Technological University
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