# GTUT DIPLOMA D.C. Circuits GTU 21 Course (I - Electrical - 4310901)

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Syllabus D.C. Circuits (4310901) Total Credits (L + T + P/2) Examination Marks Total Marks C Theory Marks Practical Marks CA ESE CA ESE 5 30 70 25 25 150 Unit Unit Outcomes (UOs) (4 to 6 UOs at different levels) Topics and Sub-topics Unit - I Fundamental concepts of D.C. circuits. 1a. Explain the properties of the commonly used electrical engineering materials. 1b. Classify different types of resistors. 1c. Explain the effect of temperature on resistance. 1d. Determine voltage, current and resistance in electrical circuit using Ohm’s law. 1e. Apply Kirchhoff’s Voltage and Current Law to determine voltage, current and power in the given resistive circuit. 1f. Calculate work, power and energy in given electrical circuit. 1g. Use Joule’s Law of heating to compute the amount of heat produced due to current flow in a conductor. 1h. State the impact of using electrical source over the other energy sources on the environment. 1.1 Electric Potential, EMF, Current, Power and Energy. 1.2 Conductor, Semiconductor and insulator-properties and applications. 1.3 Resistor, Inductor and Capacitor. 1.4 Resistor-Properties and Practical applications, Classification based on ohmic value and material, Effect of temperature on resistance and temperature coefficient of resistance. 1.5 Conductance, conductivity, current density. 1.6 Ohm’s law : Applications and limitations. 1.7 Kirchhoff’s voltage law and Kirchhoff’s current law. 1.8 Joule’s law of heating, applications. 1.9 Power and energy, unit conversion from mechanical to electrical and vice-versa. 1.10 Impact of using electrical source over the other energy sources on the environment. (Chapter - 1) Unit - II Network solution techniques 2a. Determine the equivalent resistance of given series, parallel connections. 2b. Apply source transformation techniques to simplify electrical circuits. 2c. Apply Mesh analysis and Nodal analysis to calculate voltage, current and power in given resistive circuits. 2d. Apply the principle of duality to electrical networks. 2.1 Node, branch, loop, mesh; open, closed and short circuit. 2.2 Series and Parallel connections of resistors and equivalent resistance. 2.3 Source transformation techniques. 2.4 Mesh analysis. 2.5 Nodal Analysis. 2.6 Duality in electrical networks. (Chapter - 2) Unit - III Network theorems 3a. Differentiate given types of electrical circuits with examples. 3b. Apply superposition theorem to calculate current and voltage in any branch of circuit with two or more sources. 3c. Apply Thevenin’s theorem to simplify a given electrical network and compute current and voltage in branch under consideration. 3d. Apply Norton’s theorem to simplify a given electrical network and compute current and voltage at a branch under consideration. 3e. Apply Maximum Power Transfer theorem to calculate load resistance for maximum power transfer. 3f. Convert resistive ‘T (star)’ network to ‘pi (delta)’ network and vice versa. 3.1 Types of electric circuits - Active and Passive, Linear & Nonlinear, unilateral and bilateral circuit. 3.2 Superposition theorem, equivalent circuit. 3.3 Thevenin’s theorem, equivalent circuit. 3.4 Norton’s theorem, equivalent circuit. 3.5 Maximum Power Transfer theorem. 3.6 ‘T’ to ‘Pi’ network conversion (star-delta transformation) and ‘Pi’ to ‘T’ network conversion (delta-star transformation). (Chapter - 3) Unit - IV Capacitors and its applications 4a. Explain the working of a capacitor. 4b. Identify the factors affecting the capacitance. 4c. State applications and types of capacitors. 4d. Calculate the capacitance, charging and discharging time, energy stored in capacitors in electrical circuits. 4e. Classify the types of batteries & connect it in series & parallel. 4f. Describe in brief, the recycling as well as disposal processes of old capacitors and batteries. 4.1 Capacitor - Function, types, applications, Capacitance, Capacitive reactance, Factors affecting capacitance. 4.2 Behaviour of capacitors in DC circuits, Charging and discharging of Capacitor, RC time constant, Energy stored in Capacitor. 4.3 Series and parallel combination of capacitors. 4.4 Capacitance of parallel plate capacitor and Spherical capacitor. 4.5 Batteries, ratings, types and their comparison. 4.6 Identification of weak battery in series and parallel combination. 4.7 Recycling, disposal of old capacitors and batteries safely. (Chapter - 4) Unit - V Magnetism and electromagnetism 5a. Compare magnetic circuit with electric circuit. 5b. Apply laws of electromagnetism to determine direction of flux, magnetic force, induced emf, flux density and field strength. 5c. State Faraday’s laws of electromagnetic induction, Flemings right- and left-hand rule and Lenz’s law. 5d. Compute equivalent inductance in various series-parallel combinations. 5e. State applications of the given type of inductor. 5f. Calculate the energy stored in the given inductor. 5.1 Flux, Flux density (B), Magnetic field intensity (H), M.M.F, magnetic lines of force, permeability, hysteresis loop, reluctance, leakage factor, B-H Curve. 5.2 Comparison of magnetic and electric circuit. 5.3 Electromagnetism, Electromagnetic field around a current carrying conductor. 5.4 Faraday’s Laws of electromagnetic Induction, Fleming’s right - and left-hand rule, Lenz’s Law. 5.5 Induced EMF, Self (static and dynamically induced emf) and mutually induced emf and their applications. 5.6 Self and mutual inductance, Inductive reactance, Coefficient of self and mutual inductance. 5.7 Inductance in series and parallel 5.8 Inductors - Function, types, construction and applications. 5.9 Energy stored in an inductor. (Chapter - 5)

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