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Where reactive power is used which is released in another part of ac voltage cycle as you have reactive power is power that is stored in one part of the AC voltage wave and released in another?
Wiki User
∙ 11y ago
single phase induction motor
is really a two phase motor
a capacitor to one of the phases stores the reactive power
releasing it to the coil 90 degrees later
setting up the rotating magnetic field
that stores reactive power in the rotor (or the shorted windings of the rotor)
releasing it as it turns
Wiki User
∙ 11y ago
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What are advantages of reactive power?
Real power is power that is used to do work. This is the power a light bulb uses to glow. Reactive power is power that is stored in one part of the AC voltage wave, and released in another. This causes the power to appear as a phase shift, and is generally caused by inductive or capactive loads. With regard to the power system, you can also get reactive power flowing due to unequal source voltages. Under these conditions, the apparent impedance of one source to the other will appear reactive/inductive, resulting in reactive power flow.
What is the electrical term VAR?
Seeing as how this question is under Home Electricity the term VAR stands for Volt Amps Reactance.See related links belowVAR is a term for computer distribution business. Which stands for Value Added Retailer.
What is the relationship between motor speed and power factor?
Power factor is the ratio of apparent versus true power. It depends on the phase angle between voltage and current, and is the cosine of that phase angle. This occurs because a motor is an inductive (reactive) load, constituting a stored energy device. In an inductor, current lags voltage. In a capacitor, current leads voltage.
What is the meaning of real electrical power (p) reactive power (Q) and apparent power (S)?
Active power: Power that is actually consumed. If you, in the time domain, multiply voltage and current continuously (i.e. via oscilloscope), then take the time-average of the result, that is related to active power. Reactive power: Power that is stored in components, then released again back to the source through the AC cycle. Capacitors and inductors both do this, just in opposite phase. Apparent power: The peak voltage times the peak current (or the RMS voltage times the RMS current, depending on if you're looking at peak power or average power). A power supply must be capable of outputting the full apparent power delivered to a circuit, not just the active power.
How can current lag or lead voltage in an AC circuit isn't current a function of voltage etc?
Current can lag or lead voltage in an AC circuit when the load is what we call reactive. The idea that current is purely a function of voltage only applies when working with DC, or when working with purely resistive loads, such as light bulbs and toasters. Not so, when dealing with motors and power supplies. What happens is that an inductor resists a change in current. That means that, given a particular voltage and current at a particular instant of time, if you change the voltage, the current will not immediately follow - it will lag - because the inductor is a stored energy device. Similarly, a capacitor resists a change in voltage, which means that if you change the current, the voltage will not immediately follow - it will lag - also because the capacitor is a stored energy device. Flip over current and voltage in the analysis of a capacitor, and you find that the current will lead the voltage, as opposed to the inductor's current lagging the voltage. This causes the phenomenon of power factor, which is basically the cosine of the phase angle between voltage and current. Power factor is the ratio of apparent power to true power.
What is equivalent of 50 voltage ampere rating to wattage?
The short answer: they are identical: 50VA (through a resistive load) = 50WattsThe long answer:Power can be divided into real power and reactive power. Real power is used to do real work. reactive power is stored and released in reactive elements (capacitors and reactors). A purely resistor is hard to get, having absolutely no reactance or capacitance. Because of this, watts defines the amount of real power available to do work; volt-amps defines the maximum current drawn at a specified voltage.
Is voltage a stored energy or not?
Not
Why is phosphorus is stored In Water?
because it is highly reactive in nature & hence is stored under water
What are advantages of reactive power?
Real power is power that is used to do work. This is the power a light bulb uses to glow. Reactive power is power that is stored in one part of the AC voltage wave, and released in another. This causes the power to appear as a phase shift, and is generally caused by inductive or capactive loads. With regard to the power system, you can also get reactive power flowing due to unequal source voltages. Under these conditions, the apparent impedance of one source to the other will appear reactive/inductive, resulting in reactive power flow.
Why is sodium metal is stored in liquid paraffin?
as it is exteremly reactive
How are group 1 elements stored?
group 1 elements are stored in oil because they are highly reactive elements.
What is the electrical term VAR?
Seeing as how this question is under Home Electricity the term VAR stands for Volt Amps Reactance.See related links belowVAR is a term for computer distribution business. Which stands for Value Added Retailer.
Identify the false statement concerning reactive metals and water reactive materials?
Metals and metal hydrides may be stored with corrosives.
What is the relationship between motor speed and power factor?
Power factor is the ratio of apparent versus true power. It depends on the phase angle between voltage and current, and is the cosine of that phase angle. This occurs because a motor is an inductive (reactive) load, constituting a stored energy device. In an inductor, current lags voltage. In a capacitor, current leads voltage.
What is the release of electricity stored in a source?
either voltage or current. depends what you after. otherwise its voltage
What happens when a inductor charges and then discharges?
AnswerWhen you connect DC voltage to an inductor, it opposes the passage of current, which generates a voltage pulse the is several times the value of the applied voltage. When you disconnect the voltage, the electromagnetic field inside the inductor collapses and all the energy it stored is released to the circuit in the form of another large pulse, but this time with opposite polarity.Remember:Inductors oppose changes in current and they store energy in an electromagnetic field.Capacitor oppose changes in voltage and they store energy in an electrostatic field.
Why phosphorus stored in water whereas sodium stored in kerosene?
Because phosphorus is very reactive non metal. It catches fire if exposed to air. To prevent the contact of phosphorus with atmospheric oxygen,it is stored in water. Whereas,sodium is very reactive. It reacts vigorously with oxygen and water. A lot of heat is generated in the reaction. It is, therefore,stored in kerosene
