Engineer Bhaiya Ji

.          Electrical measurement of instruments  In this article, you will find the study notes on  Measurement of Power, Energy, and Power Factor   which will cover the topics such as  Electric Power Measurements in DC & AC Circuits,  Three Phase Power Measurement using Two  Watt-meter,  Measurement of Power Factor, Power Factor Triangle,  Zero Cross Detection, Definition for non-sinusoidal current and sinusoidal voltage of power factor,  Measurement of Energy, Electro-Mechanical induction type Energy meter, Electronic Energy meters, Smart Energy Metering  & Energy Consumption Formula. Electric Power Measurements DC Electric Circuits In order to identify an electrical system in DC, a measurement of the electrical current, I, flowing through the bipoles and their electric voltage, V, across the terminals has to be formed. These measurements can be arranged by means of a DC ammeter and voltmeter. The electric power, P, related to such a bipole, can be defined as the

         Foreign Invasions in India .       North-West India had several small principalities such as Kambojas, Gandharas etc. which fought against each other. The area did not have any powerful kingdom like Magadha which could be easily entered through passes in Hindukush Iranian Invasion – 518 BC Iranian rules  Darius  penetrated into NW India in 516 BC and annexed Punjab, West of Indus and Sindh. This was 20 th  province of Iran and contributed 1/3 rd  of the total revenue of Iran due to fertile lands.  Xerxes , the successor of Darius, employed a large number of Indians in the war against Greeks. Results of the contacts The impetus to trade and commerce. Kharoshthi script came into India Iranian influence on Ashokan sculptures is clearly seen Iranian invasion eventually led to Alexander’s invasion प्रखर UPSC EPFO 2020: A 4-Month Master Course (Batch-2) START FREE TRIAL Alexander’s Invasion He defeated the last king of the line of Darius, Xerxes in 333 BC and 331 BC. Aft

                       Mauryan Empire.          The Mauryan Empire started from Magadha was founded in 321 BC by  Chandragupta Maurya . Mudrarakshasha written by Vishakadatta beautifully summarizes the rise of Chandragupta Maurya with the help of Chanakya. Chandragupta Maurya patronized Jainism. Pataliputra, modern-day Patna was the capital city of Mauryan Empire. .Expansion of Mauryan Empire Mauryan Empire was one of the world's largest empires of that time and expanded to an area of 5,000,000 km2. Leaving the parts of NE India, Kerala and Tamil Nadu, the Mauryans ruled over the rest of Indian Subcontinent. .Imperial Organization Accounts of Megasthenes in his book  Indika  and the  Arthashastra  (written by Kautilya) describe the elaborate arrangements made in the Mauryan administration, society and economy. The empire was divided into provinces which were under Princes. Along with this, a dozen departments, the armed forces containing six wings were also maintained.

Mahajanapadas, Haryanka Dynasty, Shishunaga Dynasty, Nanda Dynasty Magadha (Patna, Gaya and Nalanda districts)  – The first capital was Rajagriha and the later capital was Pataliputra. Anga and Vanga (Munger and Bhagalpur)  – The capital was Champa. It was a prosperous business centre. Malla (Deoria, Basti, Gorakhpur region)  – The capital was Kushinagar. It was the seat of many other smaller kingdoms. Their main religion was Buddhism. Vatsa (Allahabad and Mirzapur)  – The capital was Kaushambi. The most important ruler of this kingdom was King Udayan. Kashi (Benaras)  – The capital was Varanasi. Though many battles were fought against the Kosala kingdom, eventually Kashi was merged with the Kosala kingdom. Kosala (Ayodhya)  – Though its capital was Shravasti which is identical with Sahet-Mahet but Ayodhya was an important town in Kosala. Kosala also included the tribal Republican territory of Sakyas of Kapilvastu. Vajji  ( Muzaffarpur and Vaishali ) – Vajji was the seat of

In this article, you will find the study notes on  Measurement & Electrical Quantities-2  which will cover the topics such as  Moving Iron Instrument Working Operation, Radial Vane type & Co-Axial Vane type, Electro-Dynamometer Type Wattmeter, Construction of Electrodynamometer Wattmeter, Rectifier Type Instrument, Factors affecting the Performance of Rectifier type instruments, Advantages of Rectifier Type Instruments & Thermocouple Instrument. Moving Iron Instrument Working Operation The moving iron instruments are classified as: Moving iron attraction type instruments Moving iron repulsion type instruments Attraction Type Instrument Working Operation Moving Iron Instrument Working Principle:  The basic working principle of these instruments is very simple that a soft iron piece if brought near magnet gets attracted by the magnet.  The construction of the  attraction type moving iron instrument  is shown in the below figure. lt consists of a fixed coil C and m