What is over voltage? Discuss the cause of over voltage.

Overvoltage:


An overvoltage is a voltage pulse or wave which is superimposed on the rated voltage of the network or When the voltage in a circuit or part of it is raised above its upper design limit, this is known as overvoltage.

What are the Effects of Over voltages on Power Systems?

Effects of Over-voltages on Power Systems:

Why transformer is rated in KVA instead of KW?

As seen, Cu loss of a transformer depends on current and iron loss on voltage. Hence, total
transformer loss depends on volt-ampere (VA) and not on phase angle between voltage and current
i.e. it is independent of load power factor. That is why rating of transformers is in kVA and not in kW.

What do you mean by real, reactive and apparent power?

(1) Real Power: (P)
 Alternative words used for Real Power (Actual Power, True Power, Watt-full Power, Useful Power, Real Power, and Active Power)
In a DC Circuit, power supply to the DC load is simply the product of Voltage across the load and Current flowing through it i.e., P = V I. because in DC Circuits, there is no concept of phase angle between current and voltage. In other words, there is no Power factor in DC Circuits.

What are the conditions for parallel operation of three phase Alternators?

To synchronise AC generators, several important factors must be checked

20 Typical Conversations Every Desi Girl Has With Her Darzi

NOTE: This post is only for those who can understand Urdu.

All the images are taken from here.

What is the first thing that comes in your mind when we talk about tailor? A person who never gives your dress on time, never stitch your dress according to your desire and who have a lot of annoying bahanas ready for you. Here are 10 typical conversations every desi girl has with her darzi

Basics of Generator

Basics of generator 

1. What is a Generator?

How are power factor correction capacitors available?

Three-phase motor power factor correction capacitors are sold by kVAR at a particular voltage rating. Normally they are sold in a trio of three capacitors, which may or may not be packaged in a single enclosure