Electrical and Instrumentation Engineering

BE3254

ELECTRICAL AND INSTRUMENTATION ENGINEERING

COURSE OBJECTIVES :

i. To impart knowledge in types, construction and working of transformers

ii. To impart knowledge in types, construction and working of DC machines

iii. To impart knowledge in types, construction and working of AC rotating machines

iv. To introduce the functional elements and working of measuring instruments.

v. To introduce the basics of power system and protection schemes

UNIT I

TRANSFORMER

Introduction - Ideal and Practical Transformer – Phasor diagram-– Per Unit System – Equivalent circuit- Testing- Efficiency and Voltage Regulation– Three Phase Transformers –Applications- Auto Transformers, Advantages- Harmonics.

UNIT II

DC MACHINES

Introduction – Constructional Features– Motor and Generator mode - EMF and Torque equation – Circuit Model – Methods of Excitation- Characteristics – Starting and Speed Control – Universal Motor- Stepper Motors – Brushless DC Motors- Applications

UNIT III

AC ROTATING MACHINES

Principle of operation of three-phase induction motors – Construction –Types – Equivalent circuit, Speed Control - Single phase Induction motors -Construction– Types–starting methods. Alternator: Working principle–Equation of induced EMF – Voltage regulation, Synchronous motors- working principle-starting methods – Torque equation.

UNIT IV

MEASUREMENTS AND INSTRUMENTATION

Functional elements of an instrument , Standards and calibration, Operating Principle , types - Moving Coil and Moving Iron meters, Measurement of three phase power, Energy Meter, Instrument Transformers-CT and PT,DSO- Block diagram- Data acquisition.

UNIT V

BASICS OF POWER SYSTEMS

Power system structure -Generation , Transmission and distribution , Various voltage levels, Earthing – methods of earthing, protective devices- switch fuse unit- Miniature circuit breaker- moulded case circuit breaker- earth leakage circuit breaker, safety precautions and First Aid

TOTAL: 45 PERIODS

COURSE OUTCOMES :

After completing this course, the students will be able to

CO1: Explain the working principle of electrical machines

CO2: Analyze the output characterizes of electrical machines

CO3: Choose the appropriate electrical machines for various applications

CO4: Explain the types and operating principles of measuring instruments

CO5: Explain the basic power system structure and protection schemes

TEXT BOOKS:

i. Kothari DP and I.J Nagrath, “Basic Electrical and Electronics Engineering”, Second Edition, McGraw Hill Education, 2020

ii. S. K, Bhattacharya, “Basic Electrical and Electronics Engineering”, Second Edition, Pearson Education, 2017.

iii. A.K. Sawhney, Puneet Sawhney ‘A Course in Electrical & Electronic Measurements & Instrumentation’, Dhanpat Rai and Co, New Delhi, 2015.

iv. C.L.Wadhwa, “Generation, Distribution and Utilisation of Electrical Energy”, New Age International pvt.ltd.,2003

REFERENCES:

i. Kothari DP and I.J Nagrath, “Basic Electrical Engineering”, Fourth Edition, McGraw Hill Education, 2019

ii. Mahmood Nahvi and Joseph A. Edminister, “Electric Circuits”, Schaum’ Outline Series, McGraw Hill, 2002.

iii. H.S. Kalsi, ‘Electronic Instrumentation’, Tata McGraw-Hill, New Delhi, 2010