BASIC ELECTRICAL ENGINEERING

SUBJECT CODE:  06ELE 15 / 25                                                                                                                                                      I A MARKS:  25

SUBJECT: BASIC ELECTRICAL ENGINEERING   #                                                                                                                 EXAM HOURS: 3

HOURS / WEEK: 4                                                                                                                                                                             EXAM MARKS: 100

TOTAL HOURS: 52

 

1. D. C. Circuits: Application of Ohm’s Law and Kirchoff’s Laws for the analysis of series, parallel and series-parallel resistive circuits exited by independent voltage sources; Power and Energy in resistive circuits exited by independent DC voltage sources                          03 hours

 

2. Electromagnetism: Faradays Law, Lenz’s Law, Fleming’s rules, statically and dynamically induced EMF’s, concept of self and mutual inductance, energy stored in magnetic field, Illustrative examples                                                                                                        03 hours

 

3. AC Circuits:

 

i) Single Phase Circuits: Generation of sinusoidal AC voltage, concept of Average and RMS values, Form factor, peak factor of sinusoidally varying voltage and current,  Voltage, current, power and power factor analyses with phasor diagrams of circuits with R, L, C. R - L, R - C,   R – L - C for series and parallel configurations Simple problems (excluding series — parallel combination)                                                                                                                    08 Hours

 

ii) Three Phase Circuits: Necessity and advantages of three phase systems, Meaning of Phae sequence, balanced and unbalanced supply, balanced and unbalanced load(qualitative treatment only) star- delta connection -  relationship between line and phase values, measurement of 3-phase power using two wattmeter method,  expression for power factor in terms of wattmeter readings.                                                                                                                          06 Hours

 

4. Measuring Instruments: Construction and Principle of operation of Induction type single phase energy meter. Measurement of single – phase power using watt meters      03 Hours

 

5. Domestic Wiring: Different types of wiring, specifications of wires, two-way and three—way control of lamps, necessity and types of earthling, elementary’ discussion on fuses, safety measures against electrical shock                                                                                    03 Hours

 

6. DC Machines: Working principle of DC machine as a generator and as motor, constructional features, EMF equation of generator and simple problems. Back EMF and torque equations of DC motors, simple problems, types of DC motors, characteristics and applications, necessity of starter. 3 point starter, Illustrative examples (problems on starter excluded)                                                                                                                         08 Hours

 

7. Transformers: Principle of operation arid construction of single phase transformers (core and shell types). EMF equation, power losses, efficiency and voltage regulation (OC/SC tests. equivalent circuits and phasor diagrams are excluded), illustrative problems on EMF equation & efficiency only.                                                                                                         06 Hours

 

8. Synchronous Generators: Principle of operation. Types and constructional features. EMF equation, concept of winding factor (excluding derivation of winding factors) and voltage regulation, problems on EMF equation given the winding factors.                                       06 Hours

 

9. Three Phase Induction Motors: Concept of rotating magnetic field, principle of operation. Constructional features, application of squirrel cage and slip ring motors, star — delta starter. Problems only on slip calculations.                                                                                       06 Hours

 

TEXT BOOKS:

1. TI — E. Hughes; “Electrical Technology”, Intl. Student seventh edition. AWL Press, 1998.Revised by I.M.Smith

2. T2-H.Cotton; “Electrical Technology”. Oxford Press,

3. T3—K.A. Krishnamurthy & R. Raghuveer; “Electrical, Electronics & Computer Engineering”. 2nd edition. TMH Publishers. 2001.

4. T4- R. Muthusubramanian. S. Salivahanan and K. A. Muralidharan, “Basic Electrical & Electronics and Computer Engineering”. 2nd edition. TMH Publishers, 2001

 

REFERENCE BOOKS:

  1. Rajendra Prasad; “Fundamentals of Electrical Engineering”, PHI,2005
  2. B.L.Theraja; “Electrical Technology”, Khanna Publishers, 2005
  3. N. N. Parker Smith; “ Problems in Electrical Engineering”, 19th Edn, CBS Publishers
  4. T. K. Nagasarakar, M. S. Sukhija; “Basic Electrical Engineering”, Oxford,2005

 

QUESTION PAPER PATTERN

• Eight questions with 20 marks each to be set

• Five full questions to be answered

• Every question shall have a maximum of 3 subdivisions

• Preferably 50% in each question shall have a numerical problem

• One question is to be set corresponding to each 6.5 hours of teaching

• Questions of various topics can be inter-leaved

 

Articles relevant to the syllabus to he picked up from the textbooks as follows:

5.11 to 6.1, 7.1 to 7.6, 8.1 to 8.3, 8.10 & 8.11; 9.1 to 9.3, 9.5, 9.6.9.8 to 9.l0, 10.1 to 10.4, 10.6 to 10.8, 10.10, 11-11.1 to 11.5, 12.2 to 12.9, 14.1 to 14.7, 32.1 to 32.9 ; 38.1, 38.3. 39.1 to 39.6 33.l to 33.4, 33.14 to33.15; 35.1.35.2, 36.2; 35.3, 37.1, 37.2. 37.9. 37.10 ……From T1

&

Chapter 6: From Chapter of T3

Chapter 9: Page 560 of T2

Chapter 4 - 9.4.1. 9.4.2, 9.5.1, 9.5.2 of T3; 7.7 to 7.9 of T4

Chapter5- 8.1 to 8.5 of T3 and -8.1 to 8.4 of T4

 

D. C. Circuits                                     : 10 Marks

Electromagnetism                              : 10 Marks

Single Phase Circuits             : 20 Marks

Three Phase Circuits                         : 20 Marks

Measuring Instruments                     : 10 Marks

Domestic Wiring                                : 10 Marks

DC Machines                                     : 20 Marks

Transformers                                     : 20 Marks

Synchronous Generators                   : 20 Marks

Three Phase Induction Motors         : 20 Marks