BEEE || Basic Electronics and Electrical Engineering ||

Name: BEEE || Basic Electronics and Electrical Engineering ||
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Introduction to Basic Electronics and Electrical Engineering

Created byAbhishek Thakur

Last updated 10/2021

English

What you'll learn

Students will learn basics of Electronics and Electrical Engineering

Course content

4 sections • 25 lectures • 6h 45m total length

Introduction25:41
Kirchhoff's circuit laws are two equalities that deal with the current and potential difference in the lumped element model of electrical circuits. They were first described in 1845 by German physicist Gustav Kirchhoff. This generalized the work of Georg Ohm and preceded the work of James Clerk Maxwell.
Components in DC Circuits-115:44
Circuit component definitions and symbols
Resistor
Resistors are electrical components that resist current and expends voltage within a circuit.
Battery
Batteries are electrical components that provide electrical energy.
Batteries have positive and negative terminals. The negative terminal is drawn with a short line, and the positive terminal is shown as a long line.
Switch
Switches turn the flow of current through a circuit pathway on and off. When the switch is open, no current flows because there is a gap in the circuit (Figure 3).
When the switch is closed, the current can flow because the circuit is continuous.
Node
A node (or junction) is a place where two or more circuit elements join together. Figure 5 below shows a single node (the black dot) formed by the junction of five electrical components (abstractly represented by orange rectangles).
Components in DC Circuits-29:14
DC circuit types
Simple circuit
A simple circuit contains the minimum amount of components that allow it to be a functional electric circuit: a voltage source εεε (battery), a resistor RRR, and a loop of wires for current III to flow around (see Figure 6 below). We usually ignore any resistance from the wires.
In a simple circuit, the voltage supplied by the battery εεε is the voltage expended by the resistor R, and there is only one current I in the circuit.
Closed-circuit
A closed-circuit has a continuous pathway for current to flow through. In other words, there are no gaps in the circuit.
Open circuit
An open circuit has a gap in the circuit that does not allow current to flow through. The gap can be caused by an open switch, a broken component, or a broken wire.
Short circuit
A short is a pathway of zero resistance within a circuit (see the blue wire in Figure 9). When there is a short circuit, all the current flows across the short because the current prefers the path of least resistance.
DC Circuit representation and definitions6:17
Kirchhoff's Current Law Demonstration on Trainer Kit14:27
Kirchhoff's current law (1st Law) is Current Law. KCL states that the algebraic sum of all potential drops and EMFs along any closed path in a network is zero. OR. The algebraic sum of the EMFs in a loop of a circuit is equal to the algebraic sum of the product of current and resistance in it. Mathematically, the loop rule may be expressed as ∑E=∑IR.
Kirchhoff's Voltage Law Demonstration on Trainer Kit8:40
Kirchhoff's second law, also known as Kirchhoff's voltage law (KVL) states that the sum of all voltages around a closed loop in any circuit must be equal to zero. This again is a consequence of charge conservation and also conservation of energy.

Revision on KCL, KVL and RL Series Circuits12:11
RL RC and RLC CIRCUITS BASICS7:12
A circuit that contains a pure resistance R ohms connected in series with a coil having a pure inductance of L (Henry) is known as RL Series Circuit. When an AC supply voltage V is applied, the current, I flows in the circuit.
A circuit that contains pure resistance R ohms connected in series with a pure capacitor of capacitance C farads is known as RC Series Circuit. A sinusoidal voltage is applied and current I flows through the resistance (R) and the capacitance (C) of the circuit.
An RLC circuit is an electrical circuit consisting of a resistor (R), an inductor (L), and a capacitor (C), connected in series or in parallel. ... The circuit forms a harmonic oscillator for current and resonates in a similar way as an LC circuit.
RLC Series Circuit and its three cases11:24
Numerical on RL and RLC Series Circuit11:24
SERIES RL CIRCUIT Demonstration on Trainer Kit9:00
When we apply an ac voltage to a series RL circuit as shown below, the circuit behaves in some ways the same as the series RC circuit, and in some ways as a sort of mirror image. For example, the current is still the same everywhere in this series circuit. VR is still in phase with I, and VL is still 90° out of phase with I. However, this time VL leads I — it is at +90° instead of -90°.
Purely capacitive circuit and RC series circuit17:08

Star and Delta Connection for 3 phase supply20:45
In Star connection, the line voltage is equal to root three times of the phase voltage, whereas in delta connection line voltage is equal to the phase voltage. ... In star connection, phase voltage is low as 1/√3 times the line voltage, whereas in delta connection phase voltage is equal to the line voltage.
Three phase system7:28
The system which has three phases, i.e., the current will pass through the three wires, and there will be one neutral wire for passing the fault current to the earth is known as the three-phase system.
A single-phase power supply generates a lower amount of electricity to support homes and non-industrial businesses, whereas a three-phase power supplies power grids, data centers, aircraft, shipboard, and other electronic loads larger than 1,000 watts.
Three-phase power, three-phase power supplies are more efficient. A three-phase power supply can transmit three times as much power as a single-phase power supply, while only needing one additional wire (that is, three wires instead of two).
Faraday's First and Second Law of Electromagnetic Induction10:08
Faraday's Laws of Electromagnetic Induction consists of two laws. The first law describes the induction of emf in a conductor and the second law quantifies the emf produced in the conductor
First law. Michael Faraday reported that the mass( ) of elements deposited at an electrode is directly proportional to the charge ( in ampere seconds or coulombs).
Faraday's second law of electromagnetic induction states that the magnitude of induced e.m.f. is directly proportional to the time rate of change in magnetic flux linked with the circuit.
Electromagnetic Induction9:25
Electromagnetic Induction or Induction is a process in which a conductor is put in a particular position and magnetic field keeps varying or magnetic field is stationary and a conductor is moving. This produces a Voltage or EMF (Electromotive Force) across the electrical conductor.
Losses in Magnetic Circuit13:51
Magnetic losses are generated in a magnetic material due to a combination of hysteresis and eddy currents. In the proper frequency range, magnetic losses are approximately proportional to frequency and the square of magnetic flux density.
The term magnetic losses applies to the energy dissipation taking place in a material when exposed to an alternate magnetic field. ... These charges are set in movement (by Faraday's Law) under alternate magnetic fields and produce electrical currents that dissipate energy by Ohm's Law.
These losses are generally categorized as magnetic losses, mechanical losses, copper losses, brush losses, or stray losses, depending on the underlying cause and mechanism. Included in the category of magnetic losses are two types — hysteresis loss and eddy current loss.
Magnetic Circuit and its basics20:04
Construction of transformer and type of shapes8:14
Core Shell type and Ideal Transformer11:49

Three phase induction Motor Introduction22:27
A 3-phase induction motor is a machine which is constructed to work on the 3-phase supply. The three-ø induction motor is also known as the asynchronous. Its working is depending on the principle of the revolving magnetic field.
Three Phase Induction motor Torque Speed Curve41:32
It involves torque and speed relationships. If the rotor speed is less than the synchronous speed (NS), the machine acts as a motor; it delivers torque to a load. The number of torque changes based on a given speed of the load.
Torque & Slip in induction motor39:44
The induction motor torque varies from zero to full load torque as the slip varies. The slip varies from zero to one. It is zero at no load and one at standstill. From the curve it is seen that the torque is directly proportional to the slip.
Types of DC Motors13:00
There are 4 main types of DC motors:
Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux.
Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current.
Shunt DC Motors.
Compound DC Motors.
Construction of DC Motor38:27
A DC motor or machine consists of two windings namely field winding and armature winding. The field winding is stationary and the armature winding can rotate. The field winding produces a magnetic flux in the air gap between the armature and field windings and the armature is placed in this magnetic field.

Requirements

Basics of Electronics and Electrical Engineering

Description

Electronics' actual history began with the invention of vacuum diode by J.A. Fleming, in 1897; and, after that, a vacuum triode was implemented by Lee De Forest to amplify electrical signals. This led to the introduction of tetrode and pentode tubes that dominated the world until World War II. The main difference between electrical and electronic circuits is that electrical circuits have no decision making (processing) capability, whilst electronic circuits do. An electric circuit simply powers machines with electricity. ... Most modern appliances use a combination of electronic and electrical circuitry. Electronics engineering is a branch of electrical engineering concerned with the uses of the electromagnetic spectrum and with the application of such electronic devices as integrated circuits and transistors. Electrical current, voltage, resistance, capacitance, and inductance are a few of the basic elements of electronics and radio. Apart from current, voltage, resistance, capacitance, and inductance, there are many other interesting elements to electronic technology.

When building electronic circuits, you will work with a number of basic electronic components, including resistors, capacitors, diodes, transistors, inductors, and integrated circuits.

What are the electronic components?

Microcontroller.
Transformer.
Battery.
Fuse.
Relays.
Switches.
Motors.
Circuit Breakers.

Then we can say that a simple electronic system consists of an input, a process, and an output with the input variable to the system and the output variable from the system both being signals. There are many ways to represent a system, for example: mathematically, descriptively, pictorially, or schematically.

Who this course is for:

Beginner

BEEE || Basic Electronics and Electrical Engineering ||

What you'll learn

Explore related topics

Course content

Introduction6 lectures • 1hr 20min

RL RC and RLC CIRCUITS BASICS6 lectures • 1hr 8min

Star and Delta Connection for 3 phase supply, Faraday's Law and Magnetic Circuit8 lectures • 1hr 42min

Introduction to Motor5 lectures • 2hr 35min

Requirements

Description

Who this course is for: