Download DBATU B.Tech 2017 May 1st Year EX106 Basic Electrical Engineering BETX Question Paper

Dr. Babasaheb Ambedkar Technological University, Lonere

EXTC/Electrical/Computer/IT Department

Semester Examination EX106

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Subject: Basic Electronics Engineering (BETX)

Date: 04 MAY 2017 Semester: I Max. Marks: 60

Time:-2.00pm-5:00pm

Instructions to students:

1. Attempt any five questions from question no. 1 to question no. 6.

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2. Assume suitable data wherever necessary and mention it clearly.

Q. 1 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 purely intrinsic material. (The electron and hole density for intrinsic Si is 1.5×10¹° /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 A. Explain various types of fixed resistors [6]

B. Find out the values of capacitors using colour coding

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(i) Brown, Black, Orange [3]

(ii) Wide red, Yellow [3]

Q.5 SOLVE ANY TWO:

A. Write a short note on Galvanometer [6]

B. Classify different types of transducers. [6]

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C. Explain piezoelectric transducer. [6]

Q.6 A. Construct EX-OR gate by using NOR gates only [4]

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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--All the Best

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