What are v and inverted v curves?

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V Curve- Excitation vs Armature current

V curve is the graph showing the relation of armature current as a function of field current in synchronous machines. The purpose of the curve is to show the variation in the magnitude of the armature current as the excitation voltage of the machine is varied.

Inverted V Curve- Excitation vs Power Factor

The synchronous motor "V Curves" shown above illustrate the effect of excitation (field amps) on the armature (stator) amps and on system power factor. There are separate "V" Curves for No-Load and Full-Load and sometimes the motor manufacturer publishes curves for 25%, 50%, and 75% load. Note that the Armature Amperage and Power Factor "V" Curves are actually inverted "V's".

Assume it is desired to determine the field excitation which will produce unity power factor operation at full motor load. Project across from the unity power factor (100%) operating point on the Y-Axis to the peak of the inverted Power Factor "V" Curve (blue line). From this intersection, project down (red line) from the full-load unity power factor (100%) operating point to determine the required field current on the X-Axis.

In this example the required DC field current is shown to be just over 10 amps. Note at unity power factor operation the armature (stator) full-load amps is at the minimum value.

Increasing the field amps above the value required for unity power factor operation will cause the machine to run with a leading power factor, while field weakening caused the motor power factor to become lagging. When the motor runs either leading or lagging, the armature (stator) amps increases above the unity power factor value.
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How do you get curves?

Getting Curves Is A Fairly Hard Thing To Do... It's Something One's That Have, Are Born With. Most Females Are Stuck Their Whole Lives With Squared Figures, It's Not Like You're The Only One. But If It Bothers You Alot , And You Really Want That Model Type Figure, Execise! I Suggest Wall Push-Ups , ( Full Answer )

How field current change in 'V and inverted v curves ' of synchronous motor?

In v curves armature current decreases in under excitation and increase in overexcitation as fielcurrent increases and armature current is maximum at unity power factor.The power is maximum when load angle is equal to impedance angle.A linear motor is a essentially a multi phase

What is v-model?

A V-model is a method of describing theÊprocess of softwaredevelopment. In it, process steps are arranged in a V pattern,wherein product design is on one end, implementation moves alongthe bottom, and testing and integration move back up the otherside.

What is a V-belt?

Its a belt used to transfer motion, where the cross sectional shape looks like a `V`.

How an inverter invert DC to ac?

There is more than one technique. The most common is to use an electronic switch to convert the DC into a square wave, the square wave is filtered to make it a (rough) sine wave. This can then passed through a transformer to the desired voltage.. The advantage of this system is that it is very effi ( Full Answer )

What is an IS curve?

It is the locus of combinations of the interest rate and the level of real national income for which desired aggregate expenditure equals actual national income.So called because, in a closed economy with no government, it also reflects the combinations of the interest rate and national income for w ( Full Answer )

What is combat 'v'?

A brass "V" about the size of this actual letter which is pinned on the cloth portion of the medal or the ribbon. The "V" stands for Valor.

Who is A v leeuwenhoek?

Antony van Leeuwenhoek (1632-1723)was the amerteur microscopist of Delft, The Netherlands. He was the first person to publish exetensive, accurate observations of microorganisms. He earned his living as a draper and haberdasher, but spent much of his spare time constructing simple microscopes compos ( Full Answer )

What are V codes?

V codes are specific ICD-9-CM codes used to identify encounters for reasons other than illness or injury. For an example a v code would be used for billing immunizations.. This information came from ICD-9-CM 2010 book, the 10th edition.

Find the output waveform of op amp when inverted input terminal connected to a ground and a sinusoidal signal of 4 v peak at non inverting input?

In this configuration the opamp basically works as a non inverting comparator. During the positive cycle of the waveform the output will saturate to positive Vcc, while during the negative cycle the output saturates to negative Vcc. Therefore the output waveform is a square wave with amplitude equal ( Full Answer )

Who is eduardo V?

my husband in Mexico he was my first boyfriend and i am trying to know were he lives and how he look like if you see him call me 650-2919941 my cellphone number .

What is a curve?

A geometrical curve is defined as any set of points. Therefore, counter-intuitively, a straight line is also a geometrical curve.

What was a V-2?

a type of long ranged missile made by the Germans in WWII or it is a type of air soft system. ------------------------------------------------------------------------------------------------------- In the last days of world War II Nazi Germany fired a number of misilles from Norway and France int ( Full Answer )

Define V and V?

yes that is the letter v in capital (V) and lower case (v) the capital letter is bigger and the other way around!

What is inverts?

An inverting amplifier is one where the output is an inverted function of the input.. The Class A transistor amplifier, also known as common-emitter, is inverting. As you increase the voltage on the base, the output voltage on the collector decreases.. The operational amplifier has an inverting an ( Full Answer )

What does the V in CTS-V stand for?

The "V" is a designation for any Cadillac car that has been pimpedby GM's High Performance Vehicle Operations team.

How old is v v brown?

V V Brown is turning 27 in 2010. She was born in October 24, 1983.

What is a v-up?

its an excersice - lay flat on the floor, hold arms straight above your chest, fingers pointing upwards. Fold your body upwards by lifting your legs off the floor and stretching your arms towards your toes whilst contracting your abdominal muscles. Hold for a short time, return to the flat position ( Full Answer )

What is a V-code?

V codes identify conditions other than a disease or injury and are also used to report significant factors that may influence present or future care.

What is V-Motion?

The word you are asking about is a commercial software application which works on virtual computers. Apparently it is used to run video on some computers

What did they eat in V?

They ate the flesh of the humans that they had enslaved, the V's pretty much scour the universe for different things to eat, though why they'd go to all that trouble I do not know.

What words have v in them?

Words that have V in them: Beginning . van . vast . vacuum . vacant . vault . very . vet . vest . vegetable . via . violin . vinegar . vine . violet . vivacious . victory . vote . volume Middle: . achieve . alive . believe . bravery . caves . chives . clover . covert . ( Full Answer )

What is the inverted bell curve?

This is a curve representating data points that looks like an upside down bell, and it is sometimes called a well curve. It is symmetrical, and the lowest point is in the middle of the curve. See the related link below for a picture.

What is V V browns religion?

She went to a Christian school as a child so I assume she's still practices her faith.

Is V in 'V for Vendetta' a girl?

In the movie, he is male. He is played by a male, Hugo Weaving, has a distinctly masculine voice, and falls in love with Evey. However, the original comic strip also shows evidence of V being a male, saying he is 'the man in room 5'

Who was charels V?

Charles V was Holy Roman Emperor 1500-1558 ruling over a vast area of Europe, from the Netherlands to Spain (and its American colonies) to central Europe.

Why does your v smell?

if you dont wipe or dont shave it starts to stink. not wiping after using the bathroom will cause bacteria to form and not shaving will gather sweat. you should also think about wearing lose clothes from time to time so it airs out down there

When do you get your curves?

When you hit puberty, your breasts grow larger (if you are a girl) and your hips more curvy and wide. For boys, they generally become more masculine and tall.

What is V-E?

Victory in Europe day, aka VE day. When world war 2 was won, 8th May 1945. The surrender of the German reich to the allies.

What is v-logix?

V-Logix is a Training institute . V-logix provide industrial/professional courses to technical students of M.C.A. M.Sc IT/CS and other.

When do you get curves?

Young woman begin to get curves when they start there period. Woman develops broader hips to be able to carry a baby one day. Getting an hourglass figure measn you will need to reduce total body fat and improve muscle tone in the thighs, hips, back and abdominal muscles.

What is the meaning of the capital letter S with the inverted letter v over it?

The Capital letter S with an inverted V may be actually a Capital letter S with the letter "A" superimposed on it. The crass mark in the letter "A" may be obliterated by part of the "S". If that is the case, the SA means "Salvation Army", a religious group founded by William Booth, whose slogan is " ( Full Answer )

What does the V in CTS V stand for?

I just purchased a 2011 cts-v The v stands for Vette.....the engine is a supercharged 556 z06 corvette engine. It's basically a very responsive Vette engine wrapped in a Cadillac suit. Ps I love it! The main visible differences are.....dual rear centered exhaust....and front grills are mesh like, an ( Full Answer )

What words have an v and a in them?

Some words that have both an A and a V in them are: . Vacuum . Vacate . Evade . Evaluate . Adventure . Average . Vale . Leave . Save . Ravage

How do you get a V?

First you must haves place to work out then you do lots of curl ups and running . But you have to push your self at running but don't over do it . I have made that mistake a couple of times in running for example I pulled my hamstring . One more thing pace your self you have to work at these exercis ( Full Answer )


V is the 22nd letter of the Alphabet. It is also the number "5" in Roman numerals.

What is v noach?

Ark van Noach is a movie or documentary that gives the details ofwhat happened in the times of Noah.

What curves in?

Lots of different things curve in. Something that curves inwardscan also be called concave, a spoon is an example of something thatis concave. A bowl is also concave and curves inward.

Is v linear?

If v (velocity) is constant, then it's straight (linear). If v ischanging due to acceleration, then it is a curve (non-linear)