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Basic Electrical Components
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Highlights of Elements of
Electrical Engineering
1st B.Tech Course
Academic Year - 2014-15-
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B.Tech Degree Course structure
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UNIT –I: Basic Electrical Components
Definition of charge, electric potential, electric field, voltage, current, power and energy Coulombs law,
Classification of resistors, colour code, Effect of temperature on resistance, Thermistors, Sensistors,
Classification of capacitors, dielectric constant, dielectric strength, properties of capacitor, Capacitors
connected in series and parallel, Energy stored in capacitor, Inductors, Properties of inductors, Self Inductance,
mutual inductance, Dot Convention, coefficient of coupling, Inductors connected in series and parallel, Stored
energy in an inductor.
(15 Hours)
UNIT –II: Fundamentals of Electrical Circuits
DC Circuits:Concept of electricity, Classification of network elements – Active and Passive elements, Ohm’s
law, Kirchhoff’s laws, resistive networks, Voltage and current division rule, mesh and nodal analysis, Star-delta
transformation.
AC Circuits:Generation of alternating current, periodic waveforms and basic definitions, root mean square and
average values of alternating currents and voltages, form factor and peak factor, ac through pure R, L and C,
Phasor concepts.
(16 hours)
UNIT-III:
Electro Magnetic Induction
Basic definitions, analogy between electric and magnetic circuits, B-H curve, Faradays laws of electromagnetic
induction, Types of induced e.m.f’s.
Basic Concepts of Electrical Machines: DC Machines, Transformers, 3-Phase Induction Motors and
Alternators: Principles of operation, Construction, Applications.
(16 hours)
UNIT-IV :
Semiconductor Devices – Diodes: Electrical properties of semiconductor materials, energy level diagrams of
conductor, semiconductor and Insulator. Formation of P-Type and N-Type materials and their properties. Drift
and diffusion current. Formation and behaviour of PN junction diode and its V-I characteristics.
Safety Devices and Practices: Electric shock and its effects, Protective measures of electric shock, Purpose
of earthing.
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Exam Schedule
Component
Duration
Marks
% of weightage
20
20
20
(Best 2 tests
average)
Date & Time
Venue
(minutes)
Sessional Test
–1
90
Sessional Test
–2
90
Sessional Test
–3
90
Comprehensiv
e
20
20/10/2014 to 25/10/2014
Block-5
9.00 to 10.30 AM
1/12/2014 to 6/12/2014
Block-5
9.00 to 10.30 AM
20
19/01/2015 to 24/01/2015
Block-5
9.00 to 10.30 AM
10
10
19/01/2015 to 24/01/2015
CC Lab/
11.00 AM to 5.00 PM
MCA Lab
02/02/2015 to 14/02/2015
Block
10.00 AM to 1.00 PM
1/2/3/4/5/6
Quiz
Examination
Semester End
180
Examination
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Conductors
1.What is Conductor?
A substance which offers low resistance to the flow of current is called
conductor.
2.What are the properties of conductor?
3.Classification of Conductor?
(i).Bare Conductors
(ii).Insulated Conductors
4.What is the difference between wire and cable?
Any conductor which is composed of a conducting material, and is uniform in
diameter and circular in cross section is called wire
A length of insulated conductor or two or more such conductors, each provided
with its own insulation
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• What is the difference between stranded
conductor and solid conductor
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• Nature of Electricity and Fundamentals
• Types of Electricity(Static and Dynamic)
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Electronic Theory
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Haphazard Movement of
Electrons
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Definition of Charge
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Electric charge is the physical property of matter that causes it
to experience a force when placed in an electromagnetic field.
There are two types of electric charges: positive and negative.
The steady state flow of electrons under the constant PD is called Electron
Drift
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What is the analogy between Electricity and water
In a direct current (DC) electrical circuit, the voltage (V in volts) is an expression of
the available energy per unit charge which drives the electric current (I in
amperes) around a closed circuit. Increasing the resistance (R in ohms) will
proportionately decrease the current which may be driven through the circuit by
the voltage.Each quantity and each operational relationship in a battery-operated
DC circuit has a direct analog in the water circuit. The nature of the analogies can
help develop an understanding of the quantities in basic electric ciruits. In the
water circuit, the pressure P drives the water around the closed loop of pipe at a
certain volume flowrate F. If the resistance to flow R is increased, then the volume
flowrate decreases proportionately. You may click any component or any
relationship to explore the the details of the analogy with a DC electric circuit
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Assignment -1
• What is Electrical Power and to measure
it?
• What is Electrical Energy and how to
measure it?
• What are the symbols used for resistor,
inductor and capacitor?
• What is
inductance/reactance/capacitence/resistan
ce?
7-May-17
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