1. The correct statement about the speed of synchronous motor: It remains the same from no load to full load It starts decreasing and becomes zero at full load It starts increasing and bursts at full load It has divergent behavior Correct answer: 1. 2. Hunting in synchronous motor can arise due to: Change in … Read more
The power factor is a ratio of real power and apparent power. Given below are top 10 MCQs on Power Factor. 1. Power factor can be mathematically expressed as: PF = P/S PF = S/P PF = P + S PF = P – S Correct answer: 1 Power factor is a ratio of real … Read more
Ohm’s Law All in 1 Ebook by Digital Library of Electrical and Electronics Engineering covers all topics on Ohm’s law. It covers the following topics: What is Ohm’s law Ohm’s law Formulas Ohm’s law experiment Ohm’s law Graph
Electric transmission lines contain various elements like insulators, conductors, pylon, arms etc. This Ebook by the Digital Library of Electrical and Electronics Engineering presents a basic understanding of elements of transmission lines.
Mesh analysis or loop analysis involves the application of Kirchhoff’s voltage law to a circuit. KVL provides linear equations which are used to obtain current in branches. 5 Steps to Apply Mesh Analysis Assign a clockwise current direction to all loops in a network Label the loops and indicate the voltage polarity Apply Kirchhoff’s voltage … Read more
Any type of electrical measurement device/equipment connected to a circuit impacts its electrical properties to some extent. A voltmeter connected to some high-value resistance can impact the actual resistance of the circuit, similarly, an ammeter connected in the circuit can impact the amount of current flowing in the circuit. The loading effect of electrical instruments … Read more
Inductors are simply added in series to obtain the equivalent inductance. Figure below illustrates this:
Inductors in parallel can be solved using the same formula as it is for resistors. i.e The overall inductance of the parallel circuit is:
The substitution theorem states that any branch within a circuit can be substituted by an equivalent branch that has the same current and same voltage through it. Illustration: Consider a series circuit containing two resistors: 10 ohms and 5 ohms connected to a 12 v source. From voltage divider rule, the Resistor R1 has 4 … Read more
A nuclear power plant converts electrical energy into nuclear energy. Basic Working In a nuclear power station, Uranium is subjected to the fission process in the reactor. The heat energy produced is utilized for producing steam at high temperature. The steam is then moved to the steam turbine which produces mechanical energy at its output. … Read more