21EES101T-ELECTRICAL AND ELECTRONICSENGINEERING UNIT 1 Unit-1 -Electric Circuits Introduction to basic terminologies in DC circuit, Kirchhoff’s Current law, Kirchhoff’s Voltage law, Mesh Current Analysis, Nodal Voltage Analysis, Thevenin’s Theorem, Maximum power transfer Theorem, Superposition Theorem.
Basic terminologies of AC -RMS and Average value of half wave and Full wave alternating quantity, Fundamentals of single-phase AC circuits- Analysis of R-L, R-C, R-L-C series circuits-Fundamentals of three phase AC system, Three-Phase Winding Connections, Relationship of Line and Phase Voltages, and Currents in a Delta and Star-connected System
Practice on Theorems, Halfwave, Full wave bridge rectifier circuits.
Introduction to basic terminologies in DC circuit
Electric circuits are broadly classified as direct current (dc) circuits and alternating
current (ac) circuits. In both dc and ac circuits several two-terminal elements are interconnected. Table shows the elements used in dc circuits and ac circuits.
Active and Passive two terminal elements Active Components An active component is an electronic component which supplies energy to a circuit. Active elements have the ability to electrically control electron flow (i.e. the flow of charge). All electronic circuits must contain at least one active component.
Examples Voltage sources, Current sources, Generators , transistors, Diodes Passive Components A passive component is an electronic component which can only receive energy, which it can either dissipate, absorb or store it in an electric field or a magnetic field Examples Resistors, Inductors, Capacitors, Transformers.
A simple DC circuit is given in below figure to get aware of DC circuit components and its parameters.