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

Firstranker's choice

Code: 13A99101

FirstRanker.com

--- Content provided by‍ FirstRanker.com ---

B.Tech I Year (R13) Supplementary Examinations December 2017

BASIC ELECTRICAL & ELECTRONICS ENGINEERING

(Common to CSE and IT)

Answer all the questions

(Use single answer booklet only)

--- Content provided by⁠ FirstRanker.com ---

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:
   

   --- Content provided by⁠ FirstRanker.com ---

   AO
   3 O
   2 O
   5 O
   Req
   

   --- Content provided by‍ FirstRanker.com ---

   15 O
   5O
   BO
2. OR
   Determine root mean square value, average value, peak factor and form factor for the following waveform.
   

   --- Content provided by⁠ FirstRanker.com ---

   2
   0.5
   1
   -2
   3
   

   --- Content provided by​ FirstRanker.com ---

   t (sec)
   2 2.5
   3

UNIT - II

3. Find the current I through 2O resistance using superposition theorem for the circuit shown below:
   

   --- Content provided by‌ FirstRanker.com ---

   +
   5 V
   V
   ?O ?6O
   2A

--- Content provided by​ FirstRanker.com ---

4. OR
   A two part network has the following z - parameters. Find the h parameters and transmission parameters: Z11 = 12; Z12 = Z21 = 0.2O; ?22 = 0.6O.

UNIT - III

5. Explain in detail the principle of operation and characteristics of DC motors.
6. OR
   

   --- Content provided by⁠ FirstRanker.com ---

   With a neat diagram, explain the construction of 3 - phase induction motor.

Contd. in page 2

FirstRanker.com

PART - B

UNIT-I

--- Content provided by FirstRanker.com ---

7. Explain the operation of forward bias and reverse bias PN junction Diode.
8. OR
   Explain the operation of p 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.

--- Content provided by⁠ FirstRanker.com ---

10. OR
    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.
12. OR
    

    --- Content provided by​ FirstRanker.com ---

    Give the characteristics of an ideal Op-Amp.

*****