Electrical Engineering nepal
Grade: IX Time: 4 hours/week
Total Time: 32 weeks Theory: 51 hours (40%)
Practical: 77 hours (60%)
Course description:
This course provides knowledge on the basic theory of the fundamentals of electrical engineering and helps
the students to develop the skills on different laboratories works related to the subject.
Course objectives:
After the completion of this course students will be able to:
1. Understand and explain the basic laws of electrostatics, electrolysis, electrical circuits, electrical power
and energy, magnetism and electromagnetism.
2. Understand and calculate basic units of voltage, current, resistance, power, energy, and capacitance.
Course contents:
THEORY
Unit-1 Electrostatics (2 Hours)
1.1. Fundamentals of electricity, structure of atoms – electrons, protons and neutrons, atomic number,
atomic weight, free electrons, electric charge
1.2. Force between two charges, electric field, potential and potential difference, sources of energy,
voltage and its units
Unit-2 Electric Circuit (7 Hours)
2.1 Definition of an electric circuit, movement of electrons in a conductor, electric current and its units,
conventional direction of electric current, electricity and its uses
2.2 Electrical resistance, physical meaning and its role in electrical circuits, units of resistance, Factors
affecting the value of resistance, specific resistance
2.3 Connection of resistors in series and parallel, calculation of equivalent resistance, advantages and
disadvantages of each type of connection
2.4 Explanation of Ohm’s law, definition and practical application.
2.5 Explanation of Kirchhoff’s law, definition and practical application.
2.6 Simple numerical examples related to unit 2.
22
Unit - 3 Electrical power and Energy (2 Hours)
3.1 Define electrical power, its unit and practical application
3.2 Define electrical energy, its unit and practical application
3.3 Simple numerical examples related to unit 3
Unit-4 Cells and Batteries (6 Hours)
4.1 Voltaic cells- construction and working principle, Types of dry cells
4.2 Explanation of Primary and secondary cells, capacity of a cell
4.3 Explanation of principles of series and parallel combination of cells for a specified voltage and
current, advantages and disadvantages of each type of connection
4.4 Explanation of principles of series and parallel combination of batteries, application in transport,
telecommunication, industry
Unit-5 Capacitors (2 Hours)
5.1 Definition of capacitors, capacitance, units of capacitance, factors affecting the capacitance of a
capacitor, parallel plate capacitor
5.2 Connection of capacitors in series and parallel, calculation of equivalent capacitance
5.3 General idea of charging and discharging of capacitors
Unit-6 Magnetism and Electromagnetism (8 Hours)
6.1 Definition of a permanent magnet, magnetic and non-magnetic material, magnetic field, magnetic
field intensity, lines of magnetic flux, flux density,
6.2 Magnetic field and its direction due to a current carrying conductor
6.3 Application of magnetic effect of current, principle of electromagnetism, magnetic induction,
Faraday’s laws of electromagnetic induction, induced emf, magnitude and direction of induced emf
6.4 Statically and dynamically induced e.m.f, Lenz’s law
6.5 Define magnetic circuit, MagnetoMotiveForce(MMF), magnetizing force(Ampere-Turns),
permeability, reluctance
6.6 Comparison between electric and magnetic circuits
Unit-7 Fundamentals of alternating current and single phase circuits (12 Hours)
7.1 Definition and comparison of direct and alternating current and/or voltage,
definition of ac related terms- frequency, time period, phase and phase difference,
basic idea of generation of alternating emf (a sine wave
Definition of instantaneous, average and RMS values of alternating current and
voltage
7.2 Alternating current in a circuit possessing resistance, inductance and capacitance
23
only, current and voltage waveform
7.3 Current and voltage equations and waveforms in circuit containing resistance and inductance in
series and resistance and capacitance in series , definition of inductive reactance and power factor in
such circuit
7.4 Current and voltage equations and waveforms in circuit containing resistance, inductance and
capacitance in series, definition of impedance and power factor in such circuit
7.5 Power in an ac circuit- active and reactive power
7.6 Introduction of parallel ac circuits
7.7 Simple numerical examples related to unit-7
Unit-8 Three-phase circuits (12 Hours)
8.1 Explain three-phase system, advantages of 3-phase over 1-phase, general idea on the generation of
3-phase emf, phase sequence, numbering of phases
8.2 Star connection of three phase windings, neutral point, relationship between line voltage/current
and phase voltage/current
8.3 Delta connection of three phase windings, relationship between line voltage/current and phase
voltage/current
PRACTICAL
Unit-1 Electrostatics (4 Hours)
1.1 Demonstrate the phenomenon of electrification by friction(static electricity) with the help of glass bar
and silk.
1.2 Use electroscope to verify the interaction between electrical charges and hence observe the
magnitude of the acting force between them.
Unit-2 Electric Circuit (18 Hours)
2.1 Perform the correct connection of the voltmeter, ammeter, fixed and variable resistors in an electrical
circuit and hence observe the correct handling and application of the equipment.
2.2 Measure the resistance and specific resistance of a resistor using voltmeter and
ammeter.
2.3 Connect the resistors in series and parallel and calculate the equivalent resistance using voltmeters
and ammeters.
2.4 Connect the circuit with a voltmeter, ammeter, resistor and a switch to verify Ohm’s law.
2.5 Connect a source of EMF and 3 resistors in
(a) parallel with ammeters in each parallel branch, verify Kirchhoff’s first law.
(b) Series with voltmeters for each resistor, verify Kirchhoff’s second law.
24
Unit-3 Electrical power and Energy (2 Hours)
3.1 Connect the circuit with a voltmeter, ammeter and a resistor and determine the power and energy
consumed by the resistor in 5 minutes.
Unit-4 Cells and Batteries (3 Hours)
4.1 Connect a circuit with 4 batteries in series and parallel and hence find the equivalent e.m.f.
Unit-5 Capacitors (6 Hours)
5.1 Construct a simple parallel plate capacitor and verify the factors upon which the capacitance of the
capacitor depends.
5.2 Connect capacitors in series and parallel, charge them and hence find the equivalent capacitance and
voltage.
Unit-6 Magnetism and Electromagnetism (14 Hours)
6.1 Perform the experiments with permanent magnet and identify magnetic field, its density and characteristics
and observe the interaction of magnets.
6.2 Perform an experiment to verify the existence of a magnetic field around a conductor carrying current and
observe its direction and magnitude .
6.3 Perform an experiment to verify that a force experienced by a current carrying conductor in a magnetic field
and observe its direction and magnitude.
6.4 Verify Faraday’s law of electromagnetic induction using galvanometer and voltmeter and hence observe the
magnitude and direction of the induced emf.
Unit-7 Fundamentals of alternating current and single phase circuits (12 Hours)
7.1 Use oscilloscope and be familiar with its operation to measure dc/ac quantities.
7.2 Use oscilloscope to measure frequency, time period, phase and phase difference of an alternating
voltage.
7.3 Perform measurement of current and voltage in an R-L, R-C and R-L-C series circuits and hence
verify the results.
Unit-8 Three-phase circuits (18 Hours)
8.1 To be familiar with 3-phase supply and 3-phase load.
8.2 To be familiar with star and delta connections.
8.3 Connect the load in star, measure line and phase currents and voltages.
8.4 Connect the load in delta, measure line and phase currents and voltages.
References:
1. A text book of Electrical Technology – B. L. Theraja
2. ABC of Electrical Engineering - Jain and Jain
3. A Course in Electrical Technology ( Basic Electrical Engineering ) - J. B. Gupta
Grade: IX Time: 4 hours/week
Total Time: 32 weeks Theory: 51 hours (40%)
Practical: 77 hours (60%)
Course description:
This course provides knowledge on the basic theory of the fundamentals of electrical engineering and helps
the students to develop the skills on different laboratories works related to the subject.
Course objectives:
After the completion of this course students will be able to:
1. Understand and explain the basic laws of electrostatics, electrolysis, electrical circuits, electrical power
and energy, magnetism and electromagnetism.
2. Understand and calculate basic units of voltage, current, resistance, power, energy, and capacitance.
Course contents:
THEORY
Unit-1 Electrostatics (2 Hours)
1.1. Fundamentals of electricity, structure of atoms – electrons, protons and neutrons, atomic number,
atomic weight, free electrons, electric charge
1.2. Force between two charges, electric field, potential and potential difference, sources of energy,
voltage and its units
Unit-2 Electric Circuit (7 Hours)
2.1 Definition of an electric circuit, movement of electrons in a conductor, electric current and its units,
conventional direction of electric current, electricity and its uses
2.2 Electrical resistance, physical meaning and its role in electrical circuits, units of resistance, Factors
affecting the value of resistance, specific resistance
2.3 Connection of resistors in series and parallel, calculation of equivalent resistance, advantages and
disadvantages of each type of connection
2.4 Explanation of Ohm’s law, definition and practical application.
2.5 Explanation of Kirchhoff’s law, definition and practical application.
2.6 Simple numerical examples related to unit 2.
22
Unit - 3 Electrical power and Energy (2 Hours)
3.1 Define electrical power, its unit and practical application
3.2 Define electrical energy, its unit and practical application
3.3 Simple numerical examples related to unit 3
Unit-4 Cells and Batteries (6 Hours)
4.1 Voltaic cells- construction and working principle, Types of dry cells
4.2 Explanation of Primary and secondary cells, capacity of a cell
4.3 Explanation of principles of series and parallel combination of cells for a specified voltage and
current, advantages and disadvantages of each type of connection
4.4 Explanation of principles of series and parallel combination of batteries, application in transport,
telecommunication, industry
Unit-5 Capacitors (2 Hours)
5.1 Definition of capacitors, capacitance, units of capacitance, factors affecting the capacitance of a
capacitor, parallel plate capacitor
5.2 Connection of capacitors in series and parallel, calculation of equivalent capacitance
5.3 General idea of charging and discharging of capacitors
Unit-6 Magnetism and Electromagnetism (8 Hours)
6.1 Definition of a permanent magnet, magnetic and non-magnetic material, magnetic field, magnetic
field intensity, lines of magnetic flux, flux density,
6.2 Magnetic field and its direction due to a current carrying conductor
6.3 Application of magnetic effect of current, principle of electromagnetism, magnetic induction,
Faraday’s laws of electromagnetic induction, induced emf, magnitude and direction of induced emf
6.4 Statically and dynamically induced e.m.f, Lenz’s law
6.5 Define magnetic circuit, MagnetoMotiveForce(MMF), magnetizing force(Ampere-Turns),
permeability, reluctance
6.6 Comparison between electric and magnetic circuits
Unit-7 Fundamentals of alternating current and single phase circuits (12 Hours)
7.1 Definition and comparison of direct and alternating current and/or voltage,
definition of ac related terms- frequency, time period, phase and phase difference,
basic idea of generation of alternating emf (a sine wave
Definition of instantaneous, average and RMS values of alternating current and
voltage
7.2 Alternating current in a circuit possessing resistance, inductance and capacitance
23
only, current and voltage waveform
7.3 Current and voltage equations and waveforms in circuit containing resistance and inductance in
series and resistance and capacitance in series , definition of inductive reactance and power factor in
such circuit
7.4 Current and voltage equations and waveforms in circuit containing resistance, inductance and
capacitance in series, definition of impedance and power factor in such circuit
7.5 Power in an ac circuit- active and reactive power
7.6 Introduction of parallel ac circuits
7.7 Simple numerical examples related to unit-7
Unit-8 Three-phase circuits (12 Hours)
8.1 Explain three-phase system, advantages of 3-phase over 1-phase, general idea on the generation of
3-phase emf, phase sequence, numbering of phases
8.2 Star connection of three phase windings, neutral point, relationship between line voltage/current
and phase voltage/current
8.3 Delta connection of three phase windings, relationship between line voltage/current and phase
voltage/current
PRACTICAL
Unit-1 Electrostatics (4 Hours)
1.1 Demonstrate the phenomenon of electrification by friction(static electricity) with the help of glass bar
and silk.
1.2 Use electroscope to verify the interaction between electrical charges and hence observe the
magnitude of the acting force between them.
Unit-2 Electric Circuit (18 Hours)
2.1 Perform the correct connection of the voltmeter, ammeter, fixed and variable resistors in an electrical
circuit and hence observe the correct handling and application of the equipment.
2.2 Measure the resistance and specific resistance of a resistor using voltmeter and
ammeter.
2.3 Connect the resistors in series and parallel and calculate the equivalent resistance using voltmeters
and ammeters.
2.4 Connect the circuit with a voltmeter, ammeter, resistor and a switch to verify Ohm’s law.
2.5 Connect a source of EMF and 3 resistors in
(a) parallel with ammeters in each parallel branch, verify Kirchhoff’s first law.
(b) Series with voltmeters for each resistor, verify Kirchhoff’s second law.
24
Unit-3 Electrical power and Energy (2 Hours)
3.1 Connect the circuit with a voltmeter, ammeter and a resistor and determine the power and energy
consumed by the resistor in 5 minutes.
Unit-4 Cells and Batteries (3 Hours)
4.1 Connect a circuit with 4 batteries in series and parallel and hence find the equivalent e.m.f.
Unit-5 Capacitors (6 Hours)
5.1 Construct a simple parallel plate capacitor and verify the factors upon which the capacitance of the
capacitor depends.
5.2 Connect capacitors in series and parallel, charge them and hence find the equivalent capacitance and
voltage.
Unit-6 Magnetism and Electromagnetism (14 Hours)
6.1 Perform the experiments with permanent magnet and identify magnetic field, its density and characteristics
and observe the interaction of magnets.
6.2 Perform an experiment to verify the existence of a magnetic field around a conductor carrying current and
observe its direction and magnitude .
6.3 Perform an experiment to verify that a force experienced by a current carrying conductor in a magnetic field
and observe its direction and magnitude.
6.4 Verify Faraday’s law of electromagnetic induction using galvanometer and voltmeter and hence observe the
magnitude and direction of the induced emf.
Unit-7 Fundamentals of alternating current and single phase circuits (12 Hours)
7.1 Use oscilloscope and be familiar with its operation to measure dc/ac quantities.
7.2 Use oscilloscope to measure frequency, time period, phase and phase difference of an alternating
voltage.
7.3 Perform measurement of current and voltage in an R-L, R-C and R-L-C series circuits and hence
verify the results.
Unit-8 Three-phase circuits (18 Hours)
8.1 To be familiar with 3-phase supply and 3-phase load.
8.2 To be familiar with star and delta connections.
8.3 Connect the load in star, measure line and phase currents and voltages.
8.4 Connect the load in delta, measure line and phase currents and voltages.
References:
1. A text book of Electrical Technology – B. L. Theraja
2. ABC of Electrical Engineering - Jain and Jain
3. A Course in Electrical Technology ( Basic Electrical Engineering ) - J. B. Gupta
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