Fault Detection in Transmission Lines

Fault Detection in Transmission Lines | Grounding in Power System

Faults in an electric system can happen because of various reasons. Some faults in electrical distribution are due to natural causes such as lightning and are inevitable. Others can be due to deterioration of components as a result of age or abuse, and so on. What is important in operation …

Read More »

Electric Cable

Electrical_power_cable

Electric cables or conductors are basically of two types, but each type has numerous categories. Conductors are either for overhead transmission lines or for underground installation. Overhead conductors are bare wire and do not have insulation except at residential areas where contact with trees and other objects is possible, whereas underground …

Read More »

Transmission Lines and Substation Types

Transmission Lines and Substation Types

Transmission lines are used to transmit electrical energy over relatively long distances. There are three types of transmissions lines: overhead, underground and sub-transmission. Overhead Transmission Line Overhead transmission lines are used to transmit electrical energy in the form of three phases (3 AC. A basic transmission line system is represented …

Read More »

How Do Power Plants Work?

How Do Power Plants Work?

The common theme of this topic is the concept of a prime mover (source of mechanical energy) driving a dynamo (alternator or generator) that converts mechanical energy to electrical energy. Furthermore, we take a look at the basic working principle of common power generating plants. Hydroelectric Plants A Hydroelectric Plant …

Read More »

Distributed Generation

Distributed Generation | Technologies | Definition | Benefits

In this section, we look at small-scale power generation. As time goes on, you will encounter this approach to generating power, called distributed generation, more and more. Definition: Distribution Generation (DG) is the production of small-scale power near or at a customer’s site. Distributed generation has many potential benefits, such …

Read More »

Networking Devices and their Functions

Networking Devices and their Functions

Networking devices must be properly configured in order to communicate with other networking devices. For example, the annoying sound heard at the beginning of a fax transmission means that the two fax machines are agreeing on parameters for the transmission. Serial ports on PCs are used to connect to routers, …

Read More »

OSI Model Layers and its Functions

OSI Model Layers and its Functions

The Open System Interconnection (OSI) reference model is an industry-standard framework created and maintained by the International Standardization Organization (ISO). The OSI model was created to make network devices and network protocols interoperable. It allows components, such as hard drives and video cards, to function in a computer or network …

Read More »

Internet Connections Types

Internet Connections Types

There are many types of connections available for modern networks. Network connection types vary widely. Dial-up, broadband, cable, DSL, satellite, ISDN, and cellular (broadband wireless) are the main types of network connections which we describe. Ethernet Internet connections are becoming more common in homes and businesses, but are not described …

Read More »

What is Network Cabling

Network Cabling | Basics | Tools

In this lesson, the various types of network media are described along with the tools used in day-to-day network operations. Lesson Objectives Identify network cables and connectors. Categorize characteristics of connectors and cables. Identify the appropriate networking tools to use based on a given scenario. Network Media The network media …

Read More »

Network Types and Topologies

Network Types and Topologies

This lesson introduces computer networking. The types of networks and the types of network topologies are described. The role of a network administrator is explained. Network operating systems are described. Computer Networks A computer network is a collection of devices, including computers, connected together for the purpose of sharing data …

Read More »

Printer Types

Printer Types | Impact and Non-Impact Printer

In this lesson, printers are explored, with descriptions of each major printer type. The methods printers use to move paper are explained. And the maintenance techniques of cleaning and calibrating printers are described. Laser printer operation is described in some detail. Lesson Objectives Identify printer features. Identify the advantages and …

Read More »

Laptop Components and Their Functions

Laptop Components and Their Functions

This lesson describes the components of a laptop, including displays, lids, keyboards, mice, AC power, hard drives, optical drives, docking stations, port replicators, and peripherals along with their functions. Lesson Objectives Identify laptop components and their functions. Identify laptop expansion capabilities. Identify laptop connection types. Laptops Laptop computers, or laptops, …

Read More »

Serial and Parallel Ports of Computer

Serial and Parallel Ports of Computer

This lesson introduces the interface types used to connect external devices for digital communication. These interface types include serial, parallel, PS/2, USB, FireWire, and Bluetooth. Lesson Objectives Identify and compare I/O ports. Identify the characteristics of connection interfaces. Identify connector types and associated cables. Identify the appropriate connector or cable …

Read More »

Data Security Methods

Data Security Methods | Wireless Network Security

Securing data on a device is of the utmost importance. Both physical and digital security should be considered. A plan including risk mitigation is always a good idea when dealing with data. Several methods to protect data are described in this lesson. These measures extend to the disposal of hardware …

Read More »

Computer Storage Devices Types

Computer Storage Devices Types

In this lesson, computer storage is described, including types of external and internal storage, how data is read from and written to storage devices, and how to install storage devices. Storage Devices Floppy disk drives, tape drives, hard drives, optical drives, flash drives, and solid-state drives comprise the storage options …

Read More »