Understanding AC Fundamentals in Basic Electrical Engineering
Exploring key concepts in AC fundamentals, including definitions of alternating quantities, important terms like amplitude, time period, instantaneous value, frequency, and angular frequency. The presentation covers AC circuits with resistance, inductance, and capacitance, providing insights into RMS, average value, and phasor representation. Presented by Prof. A. B. Kasar, Assistant Professor at Hope Foundation's International Institute of Information Technology, Pune.
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Basic Electrical Engg. UNIT:-IV AC Fundamental Prof. A. B. Kasar Assistant Professor Department of Applied Sciences & Engineering HOPE FOUNDATION S INTERNATIONAL INSTITUTE OF INFORMATION TECHNOLOGY, I IT, PUNE
Overview of Presentation Definition of Alternating Quantity RMS or Effective Value Average Value Phasor Representation AC circuit with a pure resistance AC circuit with a pure Inductance AC circuit with a pure Capacitance Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
Definition of Alternating Quantity An alternating quantity changes continuously in magnitude and alternates in direction at regular intervals of time. Important terms associated with an alternating quantity are defined below. Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
Important Definations 1. Amplitude It is the maximum(+ve or -ve) value attained by an alternating quantity. Also called as maximum or peak value 2. Time Period (T) It is the Time Taken in seconds required to complete one cycle of an alternating quantity. Denoted by T 3. Instantaneous Value It is the value of an alternating quantity at any instant. Instatenios values denoted by small letters 4. Frequency (f) It is the number of cycles that occur in one second. The unit for requency is Hz or cycles/sec. The relationship between frequency and time period can be derived as follows. Time taken to complete f cycles = 1 second Time taken to complete 1 cycle = 1/f second T = 1/f Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
Important Definations 5. Angular Frequency ( ) Angular frequency is defined as the number of radians covered in one second(ie the angle covered by the rotating coil). The unit of angular frequency is rad/sec. =2 f Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AVARAGE VALUE Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AVARAGE VALUE NUMERICAL Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AVARAGE VALUE NUMERICAL Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
RMS/EFFECTIVE VALUE Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
RMS/EFFECTIVE VALUE NUMERICAL Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
RMS/EFFECTIVE VALUE NUMERICAL Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
FORM & PEAK(CREST) FACTOR Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
Phasor Representation Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
Continue. Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
Continue. Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
Continue. Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AC circuit with Pure Resistance Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AC circuit with Pure Resistance Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AC circuit with Pure Inductance Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AC circuit with Pure Inductance Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AC circuit with Pure Inductance Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AC circuit with Pure Capacitance Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
AC circuit with Pure Capacitance Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
References Sr. No. 1 Book Name Electrical Technology Authors H Cotton Vol. No. Publisher CBS Publicati A textbook of Electrical Technology Basic Electrical & Electonics Engineering Basic Electrical Engineering Electrical Technology B.L.Theraja Volume I S Chand 2 S.K. Bhattacharya Pearson 3 D.C Kulsshrestha Tata McGraw Hill 4 Edward Hughes Pearson 5 Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 | www.isquareit.edu.in | info@isquareit.edu.in
THANK YOU For further details, please conctact Amit B Kasar amitk@isquareit.edu.in Department of Applied Sciences & Engineering Hope Foundation s International Institute of Information Technology, I IT P-14,Rajiv Gandhi Infotech Park MIDC Phase 1, Hinjawadi, Pune 411057 Tel - +91 20 22933441/2/3 www.isquareit.edu.in | info@isquareit.edu.in
