BASICS FOR BEEE COURSE . BEEE-PART-A INTRO.pptx

BASIC ELECTRICAL AND ELECTRONICONICS
ENGINEERING (23EE01)
DC & AC Circuits
• By
R.ANJANEYULU NAIK ASSOC.PROF
DEPT OF EEE,LBRCE,
•
11-06-2024 R.ANJANEYULU NAIK, ASSOCIATE PROFESSOR,EEE,LBRCE 1

Why do you study this course?

What are the contents of the course?
Course Educational Objectives (CEOs)
What are the abilities/capabilities getting after
completion of the course?
Course Outcomes (COs)
Because our Institute adopted Outcome Based Education (OBE) Approach
EXAMPLE: Do the B.Tech Programme----getting CGPA 9.9

Course Outcomes: At the end of the course, the student will be able to:
CO1: Extract electrical variables of AC & DC circuits using fundamental laws. (Understand)
CO2: Understand the operation of electrical machines and measuring instruments. (Understand)
C03: Classify various energy resources, safety measures and interpret electricity bill generation m electrical
systems. (Understand)
Course Educational Objective:
This course enables student to illustrate the basics of applied electricity and electronics.
BLOOMS TAXONOMY LEVELS : 6

Why do you attain these COs?
11-06-2024 10
R.ANJANEYULU NAIK, ASSOCIATE PROFESSOR,EEE,LBRCE

11-06-2024 11
TO ATTAIN YOUR
A: 12 POS
B.PSOs
R.ANJANEYULU NAIK, ASSOCIATE PROFESSOR,EEE,LBRCE

UNIT-I
DC & AC CIRCUITS
PART-A

What is ATOM?
•Everything is made of atoms which contain POSITIVE
particles called PROTONS and NEGATIVE particles called
ELECTRONS.
Proton (+)
Neutron
Electron (-)
BASIC DEFINITIONS:

copper has 29 protons in its nucleus and
an equal number of electrons orbiting
around it.
atomic model of a copper atom
Now consider a copper
wire: matter filled with
countless copper atoms.

Electrical Charge
• Electric charge is given the symbol
•Q
• Electrons are the charge carriers that flow
in an electrical circuit from the negative to
positive terminals.
Because Electrons have a negative charge…. Like charges repel, opposites attract) giving rise to an electric
current.

Current
The flow of electric charge
When the faucet (switch) is off,
is there any flow (current)?
NO
When the faucet (switch) is on,
is there any flow (current)?
YES
Tank (Battery) Faucet (Switch)
Pipe (Wiring)
- measured in AMPERES (A)

Charge, Current & Time
• Electric current is given the symbol
•I
• Electric current is the movement of negative charges
(electrons) in a circuit

Charge, Current & Time
•If current is charge flowing per second then
t
Q
I  time in seconds (s)
Current in Amps (A)
Charge transferred
in coulombs (C)
A current of 1 A mean 1 C of charge transferred in 1 s.
It
Q 
I
Q
t 

Voltage
Current
Current is measured in
AMPERES (AMPS, A).
Current
Andre-Marie Ampere (1775-1836)

Electrical Charge Q
• measured in
•Coulombs
• which is given the symbol
•C

One Amp of current is one Coulomb per second
1A = 1C/ Sec

Potential Difference (PD)

VOLTAGE/Potential Difference (PD)
It is an energy source generated by Battery or Generator.
It is the potential difference between the two terminals of a battery or cell,
which moves one joule of energy per coulomb Charge.
1 V = J/C or in Volts
Where:
•V = Voltage in Volts
•J = Energy in Joules
•C = Charge in Columb
Count Alessandro Volta (1745-1827)

The rate at which work is done upon an object.
Power = Work / time in energy per second or Joules per Second
P = dW /dt =

ELECTRICAL CIRCUIT
ELEMENTS

RESISTORS
Resistor and Resistance?
A resistor is an
electronic
component
with a fixed
electrical
resistance
Resistance is the property of the material, which opposes how much the
flow of electricity through it.

The symbol for the resistor is shown in Fig.
According to Ohm's law,
where ‘G’ is the conductance of a
conductor. The unit of conductance is
mho (℧).

How strongly the material opposes the flow
of current.
Conductors -have low resistivity.
Insulators have high resistivity,
ρ is the resistivity of the material in ohm metres,
Ω⋅m.

The power absorbed by the resistor is given by,
where ‘i’ is the current in the resistor in amps, and ‘v’ is the voltage across the resistor in
volts.
The energy lost in resistance in time‘t’ is given by
where v is the volts, R is in ohms, t is in seconds and W is in joules.

Where i(o) is initial current in the coil
the current-voltage relation is given by

BASICS FOR BEEE COURSE . BEEE-PART-A INTRO.pptx

More Related Content

Similar to BASICS FOR BEEE COURSE . BEEE-PART-A INTRO.pptx (20)

Recently uploaded (20)

BASICS FOR BEEE COURSE . BEEE-PART-A INTRO.pptx