Online Educational Platform based on AI
Line insulators The overhead line conductors should be supported with the poles or towers by means of insulators. These insulators act as supports in order to avoid any leakage of current from the conductor to earth. Properties of insulators Here are some of the properties of line insulators i. Mechanical strength should be very high. […]
Types of overhead lines The transmission line has three parameters, resistance, inductance and capacitance distributed uniformly along the whole length of the line. The resistance and inductance forms series impedance. The capacitance existing between conductor for single phase line and a conductor, to neutralize the three-phase line, forms a shunt path through the length of […]
Effects of transmission 1. Skin effect When an alternating current flows through a conductor, a flux will be produced in it. This flux will be higher at the center of the conductor than outer surface. The high reactance of center area causes the alternating current to flow near the surface of the conductor. This is […]
Types of poles Line supports or the poles which hold the conductors to a height they are above the ground level. In general, four types of poles are used, depending on the size and shape of the conductor used. i. Wooden poles ii. Concrete poles iii. Tubular steel poles iv. Latticed steel tower i. Wooden […]
Overhead line transmission The overhead lines are used to transmit electricity from power plants to consumers. A network of electrical power lines are used to transmit the electricity over a geographic area is called power grid. Main components used in overhead lines i. Electric conductors ii. Poles and towers iii. Insulators iv. Cross arm that […]
Alternative transmission From the power generating stations, a large amount of AC supply is produced and is transmitted through transmission lines. The layout of a typical AC power supply system. The transmission is done caried by 3 phase 3 wire and 3 phase 4 wire systems. Other methods are also used for some special reasons. […]
Direct Transmission Let us see the transmission of DC power from the AC power. The single line diagram of high voltage direct current transmission is given in Alternative current is generated and stepped up to high voltage through the sending end transformer. This high voltage alternating current is converted to the direct current by a […]
Introduction Planning of the power distribution is one of the most important components of power system. Sub transmission is the efficient and economical method of power between power distribution and transmission. The power is transmitted through the overhead line distribution system and underground cable. These types of transmission have their own electrical properties and have […]
Ponniyin Selvan Chapter 30 – Art Gallery The Younger Lord Pazluvoor drag ged Vandiya Devan to the audience chamber along with him. The explanation given by the youth about his conversation with the Emperor had not completely satisfied him. Perhaps it was a mistake to have permitted him to meet the Emperor in privacy. It […]
Ponniyin Selvan Chapter 29 – “Our Guest” After the poets had departed, the palace doctor mixed a medicinal potion and brought it to the Emperor. Malayaman’s daughter, the Queen Consort received the goblet in her hands and gave it to her lord the Emperor. The Younger Lord Pazluvoor, who waited patiently till the Emperor had […]
Ponniyin Selvan Chapter 28 – Iron Grip When he had survived from the flood of surprise that drowned him, the court poet Nallavan Sattanar said, “My Lord! Does it mean …? The poet who wrote these verses is…” “It is this Emperor of the earth who lies on this sickbed without the use of his […]
Ponniyin Selvan Chapter 27 – Court Poets Watch out! Watch out! Here come the great poets! The best of the bards! Those who have swum the great oceans of Tamil literature! Those who have followed in the tradition of Agastya! They who have drunk the essence of Tolkappiyam and other such ancient works of the […]
Ponniyin Selvan Chapter 26 – Danger! Danger! Vandiya Devan entered the audience chamber ahead of the poets. He guessed that the stately person seated on the high throne was the Younger Lord of Pazluvoor. Several persons s tood around him in deferential postures with hands folded and lips sealed. One person stood with several bundles […]
Ponniyin Selvan Chapter 25 – Inside The Fort The signet ring with the palmtree emblem had miraculous powers like the magical rings in fairy tales! In that morning hour, various people – vendors of milk, curds and other dairy products, fruit and vegetable sellers, butchers, farmers, others engaged in various trades, clerks and accountants, petty […]
Ponniyin Selvan Chapter 24 – A Cuckoo And A Crow Vandiya Devan slept through the night like a log and woke up only after sunrise in the morning. Even after waking, he was lying down without the will to get up. The light breeze ti. blew briskly, leaves of the creepers and trees rubbed against […]
Ponniyin Selvan Chapter 23 – Amudan’s Mother The Velaikara Battalion wound its way through the main market street. Some of the men walking towards the end of the parade performed certain audacities in that marketplace. One fellow entered the shop of a food vendor and carried out a basket of sweetcakes; he distributed the cakes […]
Ponniyin Selvan Chapter 22 – Velaikara Battalion Of Velirs First, the outer screens emblazoned with the palmtree symbol parted; next the silken inner curtains were pushed aside. The golden hand seen by Vallavarayan o nce before, the hand which had stunned him, could be seen once again. Thinking that it was no longer polite to […]
Ponniyin Selvan Chapter 21 – The Curtains Parted Can two minds function at the same time in one body? Yes – Vandiya Devan knew the answer because of his experiences that day! He was tra velling through the most fertile of the bountiful Chozla lands. It was the season of new floods in all the […]
Ponniyin Selvan Chapter 20 Azlvar– The First Enemy Adiyan gave his heartfelt thanks to the vampire bat which helped him at the right time; a hooting owl gave further aid. The con spirators gathered in the clearing thought that the noise was made by the owl or the bat. “Hey fellow! This bat has frightened […]
Ponniyin SelvanChapter 19 — Battlefield And Forest It was a practice among the Tamils of the ancient times to erect a hero stone and raise a memorial for great warriors who died bravely in the battlefield. If the memorial was marked merely by a stone tablet the place was known as the stone monument of […]