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

How much energy can be save by installing correction capacitor?

Power factor correction does not save much energy – usually less than 1 percent of load requirements – but even that benefit depends upon how low the power factor is to begin with and how heavily loaded are in-plant distribution system conductors.

How Significant Is Power Factor Correction in Industrial Settings?

 Power factor is low in industrial settings where most of the plant energy is used to power electric motors.

Why, when birds sit on transmission lines or current wires don't get shock?

Photo:skeptics.stackexchange.com

Why when birds sit on transmission lines or current wires don't get shock?

What are the uses and applications of Transformer?

Uses and Application of Transformer
The most important uses and application of Transformer are:

15 Muslim Memes That Are Too Funny

These Muslim memes will have you ROFLING, you probably will not see anything funnier

The two electric bulbs of 60W and 100W are given. Which one will be brighter when they are connected (i) In Series and (ii) In Parallel? And Why?

1. The resistance of a 60W bulb is much more than that of 100W bulb. When they are connected in         series. 40W bulb will be more brighter (where P=I^2R).

2. When the two bulbs are connected in parallel, the 100W bulb will be more brighter (where                    P=V^2/R).

Why the direction of rotation of table and ceiling fan is different?

Actually ceiling fan can be designed to move either clockwise or anticlockwise direction.It all depend on whether they are set for winter or summer. A switch or extra connection may be needed to get both direction which has only one type of... direction.

The story behind my film, Maalik – From the horse’s mouth

I made a legitimate film, followed the due process of law, got certifications from the offices as prescribed by the government itself, ran a film successfully in cinemas for three weeks and as soon as I was getting a break, someone decided to ban my film. Photo: MAALIK FACEBOOK PAGE

Maalik is in the midst of a huge controversy; all kinds of motives are being attributed to my film and, although everyone is entitled to their own views, I thought a straight narrative from the one who knows Maalik the best may help.

Astronomers gear up for planetary alignment

Are you ready for one of the highlights of the skywatchers' year. Astronomers are preparing for one when Sun, Mercury and Earth will line up. It's a rear phenomenon that happens a dozen or so times in a century.

39 Cool Facts About Facebook

Today social media has become an essential part of life. And Facebook is one of the top raked social media sites. We can see that from figures that Facebook had 1.6 billion monthly active users in the first quarter of 2016.

Most Expensive Object On Earth

What will be the most expensive object on Earth? What is your first thought? It would be diamond. Or it would be any kind of ornament.

Facebook said to develop camera app similar to Snapchat

 Are you bored of using Facebook.

Everyday watching the same wall and reading all those annoying notification. Dealing with that kind of Facebook makes you hell tired. And you want to get rid from this tedious routine. You neither want to say good by to this  social network.

That bundle is not Angle

He named her Angel and she looked the part too. After four rowdy boys, his wife and he had prayed for a girl. He was blessed, fathering four sons or at least that is what everyone told him. However, the Easter of 2010 brought with it the true tidings of joy and blessings for him, when his Angel was born.

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