# Download JNTUA B.Tech 1-1 R13 2017 Dec Supply 13A99101 Basic Electrical and Electronics Engineering Question Paper

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Code: 13A99101

B.Tech I Year (R13) Supplementary Examinations December 2017
BASIC ELECTRICAL & ELECTRONICS ENGINEERING
(Common to CSE and IT)

Time: 3 hours Max. Marks: 70

*****

PART ? A

UNIT ? I

1 Find the equivalent resistance between the terminals AB using Delta-Star transformation for the
circuit shown below:

OR
2 Determine root mean square value, average value, peak factor and form factor for the following
waveform.

UNIT ? II

3 Find the current through resistance using superposition theorem for the circuit shown below:

OR
4 A two part network has the following parameters. Find the parameters and transmission
parameters:

UNIT ? III

5 Explain in detail the principle of operation and characteristics of DC motors.
OR
6 With a neat diagram, explain the construction of 3 ? phase induction motor.
Contd. in page 2

Page 1 of 2
R13

2

3
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Code: 13A99101

B.Tech I Year (R13) Supplementary Examinations December 2017
BASIC ELECTRICAL & ELECTRONICS ENGINEERING
(Common to CSE and IT)

Time: 3 hours Max. Marks: 70

*****

PART ? A

UNIT ? I

1 Find the equivalent resistance between the terminals AB using Delta-Star transformation for the
circuit shown below:

OR
2 Determine root mean square value, average value, peak factor and form factor for the following
waveform.

UNIT ? II

3 Find the current through resistance using superposition theorem for the circuit shown below:

OR
4 A two part network has the following parameters. Find the parameters and transmission
parameters:

UNIT ? III

5 Explain in detail the principle of operation and characteristics of DC motors.
OR
6 With a neat diagram, explain the construction of 3 ? phase induction motor.
Contd. in page 2

Page 1 of 2
R13

2

3
2.5
1.5 1 0.5

5 V 2A
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Code: 13A99101

PART ? B

UNIT ? I

7 Explain the operation of forward bias and reverse bias PN junction Diode.
OR
8 Explain the operation of section filter with bridge rectifier and also derive an expression for its
stability factor.

UNIT ? II

9 Draw and explain the input and output characteristics of a transistor in CC configuration.
OR
10 Describe the kind of operation that takes place in the enhancement mode MOSFET. How does this
differ from depletion mode type?

UNIT ? III

11 Explain the working of Colpitts oscillator and derive an expression for frequency of oscillation for
Colpitts oscillator.
OR
12 Give the characteristics of an ideal Op-Amp.

*****

Page 2 of 2
R13
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