Technical articles on Electronics and Electrical Engineering topics focused on Basics of EE, Electronic components, power systems and equipment used for generation, transmission, operation, and controls of electricity.
The connection of a number of generating stations in parallel in order to increase the overall stability and reliability of power system is known as an interconnected grid system. Any power grid large enough to meet the demand of an entire nation must have multiple generators drawing from multiple energy sources supplying that power. Interconnected … Read more
Electrical Engineering MCQ on Transformer In actual transformer the iron loss remains practically constant from no load to full load that is because of In actual transformer the iron loss remains practically constant from no load to full load that is because of Correct answer: 1. Core flux remains practically constant In a transformer the tappings are … Read more
Electrical Engineering MCQ on Transformer The inner cage in case of a double cage induction motor has Correct answer: 2. High inductance arid low resistance
Electrical Engineering MCQ on Transformer Iron loss of a transformer can be determined by Correct answer: 2. Low power factor wattmeter
The lubricating system has four major parts: The major purpose of a lubricating system is to reduce wear and tear of engine surfaces that come in contact with each other. The pump is responsible for drawing oil from the tank. Oil is then passed using filters for scanning impurities. After cleaning, the oil is directed … Read more
Firm capacity is defined as the product of plant efficiency and gross plant capacity. In case of power utilities and in field of electrical power and energy engineering, the firm capacity is specified by a supplier and it is the power that is intended to remain available 24/7 during the period covered by commitment. The … Read more
The basic construction of electrical cables involves six parts. Given below is a basic introduction to these: Core or Conductors Any type of cable is intended to serve a particular application. Depending on the specific application a cable can contain one, two, or three conductors/cores. E.g a 10 kVA, 3 phase AHU demands a three-core … Read more
Power Engineers are usually interested to calculate the power units that are generated per annum. This can be achieved if either the average load in kW or maximum demand and Load factor values are known. Two formulas in this regard can be used: Where the average load itself is a product of maximum demand and … Read more
It is defined as the ratio of energy generated expressed in units of kWh generated to the product of plant capacity and the number of hours during which the plant was operational. Mathematically,Plant use factor = Station output expressed in kWh/(Plant capacity * Hours of operation) Example 1: A hydroelectric power plant has an installed … Read more
Electrical power transmission lines possess series resistance, inductance, and shunt capacitance. The resistance and inductance of a transmission line cause a voltage drop across it. As a result of this drop, the voltage at the receiving end is smaller as compared to the voltage at sending side. The term voltage regulation of transmission line is … Read more