# What is ac power and ac voltage?

AC power is electricially, a value that is expressed in watts and voltage is the electromotive force that combined with amps, makes up the formula to find watts. Watts is the product of Amps x Volts. W = amps x volts.

### Is the power line voltage available in your homes a DC or an AC voltage?

We deliver power on the power grid as an AC voltage. That's alternating current, and that's what is available in your home. Read More

### In a power station where dc is actually converted to ac while distribution?

The generated voltage in a power station is AC voltage, not DC. So, it is never converted to AC, because it is already AC. Read More

### Does the neon power supply for those beer signs in bars output high voltage AC or DC?

High Voltage AC. Read More

### Is the RMS value of the power output of a device running on a certain AC voltage equivalent to the power output of a similar device if it was running on the same voltage but it was DC instead of AC?

Yes. Read More

### What electrical power do light bulbs use?

normal power . . . . . . . . . ac voltage Read More

### Does centre tap transformer convert ac voltage to ac voltage?

Yes. Transformers convert power by stepping up or down voltage. It doesn't matter what tap configuration they have. Read More

### What is the household ac electrical power mains voltage in Italy?

The voltage is 230volts and this is the norm in Europe. Read More

### Which conditions refers to a reduced voltage levels of AC power that lasts for a period of time?

Reduced voltage levels of AC power that lasts for a period of time is known as a brownout. Read More

### Is tranformer used to increase or decrease AC voltage?

The function of any transformer is to change one AC voltage value to another AC voltage value. A step down transformer will transform a higher AC voltage to a lower AC voltage. A step up transformer will transform a lower AC voltage to a higher AC voltage. The transmission of electrical power uses both of these types of transformers. From the generation station the voltage is stepped up to a very high transmission voltage and… Read More

### Why you use ac circuit than a dc circuit?

Ac power circuits are used all over the place because power companies need to send their electricity over long distances and ac travels further. The standard ac power is 120V. DC power is much lower voltage and ac is often safer. Dc voltage is 12v ten times lower than ac. So ac is more efficient to use. Read More

### What is the function of step down transformer?

The function of any transformer is to change one AC voltage value to another AC voltage value. A step down transformer will transform a higher AC voltage to a lower AC voltage. A step up transformer will transform a lower AC voltage to a higher AC voltage. The transmission of electrical power uses both of these types of transformers. From the generation station the voltage is stepped up to a very high transmission voltage and… Read More

### What is a backlight inverter?

a form of low voltage DC to high voltage AC power conversion circuit. Read More

### Why do you obtain more dc voltage than ac voltage in power supply design by using transformer?

You don't. Transformers only work with AC voltage. Their input will be an AC waveform, and their output will be an AC waveform. Other electronics are used to convert the stepped down AC waveform from the transformer to DC. Read More

### What is the household AC electrical power mains voltage in Belgium?

230 volts ac at 50 hertz. Read More

### What is the household AC electrical power mains voltage in Europe?

230 volts ac at 50 hertz. Read More

### What is AC and DC electricity?

In DC power the voltage is constant, meaning that over time it is always the same number. In AC power, the voltage varies sinusoidally, meaning that over time the voltage travels smoothly from a positive "peak" to a exactly inverse negative "peak" and back again infinitely. AC power comes out of your wall sockets, but most things us DC power. Thus, many power cables have that big ugly box on them. That box converts the… Read More

### Power equals voltage times what?

In DC, power equals voltage x current. In AC, power equals voltage x current x power factor. The power factor is an adimensional constant, and in common circuits it is often close to 1. Read More

### What is the principal advantage of ac power over dc power?

The principal advantage is AC power is more readily available everywhere, where as DC power needs more additional equipment to utilize it. The principal advantage is that AC power can be transmitted over long distances. Transformers boost the generated voltage up to hundreds of thousands of volts. At the load end of the transmission line the voltage is then dropped by the use of transformers to a workable voltage. Read More

### Do computers use AC or DC power?

Though computers plug into AC outlets, their power supplies convert that current to lower-voltage DC power for use internally. Read More

### What is the definition of reactive power?

The definition of reactive power is power that is supplied from and AC circuit. This occurs when the voltage and current are not in phase. Read More

### What factors determine power?

Power = Current * Voltage * Power Factor Above expression can further be explore as : 1. For DC Circuits Power = Current * Voltage 2. For Single Phase AC Circuit Power = Current * Voltage * Power Factor 3. For Three Phase AC Circuit Power = Line Current * Line Voltage * Power Factor Read More

### How does a frequency inverter work?

frequency inverter is a device to change AC power to variable frequency/voltage AC power, means the output frequency and voltage are adjustable, it's special used for control AC motor speed in energy saving, like fans and pumps system. Read More

### When ac convert in dc then voltage will increase or decrease?

You can make it so it does either increase or decrease. The limiting factor is that power out cannot exceed power in. So going to a higher voltage will limit current and going to a lower voltage will increase current available. A2 Because AC is continuously changing in a sinusoidal waveform, it is hard to determine the exact voltage. It is usually called by it's RMS value (Root Mean Squared). The result is that when… Read More

### How computer convert AC to DC?

the work is done in the power supply box (the metal box part in the computer, the one you plug the power cord into). It converts AC to DC via transformers, rectifiers, and voltage regulators and has extra circuitry in there to make sure that the voltage doesn't ripple (with the changes in the AC voltage) or spike (e.g., when you first turn it on) Read More

### When transmission voltage increases what happens to current and power in AC power transmission?

Current will decrease for the same amount of power transmitted at a higher voltage compared to a lower voltage. Also, the power losses in the transmission line will decrease due to the reduced current. Read More

### What is the unit used to measure reactive power in an AC electric power system?

The unit used to measure reactive power in an AC electric power system is the volt-ampere reactve (var). Reactive power exists in an AC circuit when the current and voltage are not in phase. Read More

### How does the variation of excitation of an alternator correct power factor?

The rotor of an alternator need a DC voltage applied to it to generate a magnetic field, this magnetic field will generate the AC power in the AC windings.The AVR(Automatic Voltage Regulator) is regulating this DC voltage so that the magnetic field is strong enough to maintain the output AC voltage. As soon as more current is drawn from the output, this output voltage will drop and a stronger magnetic field is needed to sustain… Read More

### How do you convert from AC to DC power?

A rectifier converts from AC to DC power by blocking one half of the AC current. A full-wave bridge rectifier is actually 4 rectifiers combined in such a way that it reverses the blocked half of the power, allowing it to flow through. A standard power supply consists of a transformer (for voltage changes), a rectifier, and additional components for cleaner power (e.g., filters to smooth out the waves of AC power, voltage regulator, etc.). Read More

### Why is alternating current low voltage?

Alternating current is not necessairly low voltage, on the controrary AC is more oftenly used for when high voltage is needed. Most power distribution systems (extremely high voltages) use AC because AC is easier to transform to high voltages (using the aptly named transformer). High voltage is needed for power distribution to decreases losses due to transmission. Read More

### What is the difference between a transformer and a rectifierwhich are found in a PC power supply?

The rectifier is what changes your AC into DC that the computer can use. Transformer raises or lowers the voltage. So you have 110 volts AC coming into your computers power supply. The Rectifier circuit in there changes the AC voltage to DC voltage but it is still to high for the computer use. The transformer lowers that voltage down to the various voltages that your computer needs Read More

### Can you say which bridge rectifier voltage has the highest out put voltage?

A: NO the power output will be higher. Bridge rectifiers do not provide more voltage output it just add more power by rectifying both positive and negative voltage of the AC input Read More

### How do you step up ac voltage without using transformer?

A: Using a diode and a capacitor and replicating for the voltage that is desired. Be aware that the final voltage can be very hi for 120 v AC and be aware that the voltage is there but the power is limited due to repeating losses along the way. Read More

### What is the equation for converting ac to DC power?

The root-mean-square (RMS) voltage of an AC signal is equal to a DC signal of the same (peak) voltage. The voltage in your wall socket is 120V RMS. The true maximum value of the voltage (as measured on an oscilloscope) is about 30% higher, or ~170V. The equation for power (P = VI) holds for both AC and DC circuits. Thus, an AC device that draws 1 ampere at 120V RMS uses the same amount… Read More

### What is used to provide the proper voltage to a CPU?

A power supply that transforms AC to DC is used to provide the proper voltage to a CPU. Read More

### What is an ac adapter?

An AC Adapters are a type of external power supply which is often enclosed in a case. AC Adapters are used within electrical devices that require power but do not contain internal components to derive the required voltage and power from the mains. Read More

### What is the current in an ac circuit with 120volts and a 60watt light bulb?

Power = Current * Voltage Current = Power / Voltage Current = 60 W / 120 V Curretn = 0.5 A Read More

### What is the voltage range at which power is transmitted?

CSA C235-83-CAN3 Preferred Voltage Levels for AC Systems, 0 to 50,000 V Electric Power Transmission and Distribution Read More

### Which laser printer component converts AC line voltage into the DC voltages the printer can use?

As in all electronics devices that obtain power from the AC electric system, a power supply converts the AC to the DC voltage(s) needed by the electronics in the device. Depending on the needs of the device this power supply may deliver a single DC voltage or as many as several dozen different DC voltages. Read More

### Why dc components operate at low voltage compared to ac component?

Because equipment operating on DC is usually low-power electronic equipment, and it uses a power-supply to convert the house AC supply to DC at the right voltage. Most appliances needing high power are designed to run on AC because that is the normal supply to houses. Read More

### How is power current and voltage related?

in ac circuits power,P=VICOS@ @ is the angle between voltage and current. in dc P=VI V is the voltage I is the current. Power (in Watts) is current (A) x voltage (V) Read More

### What is current and voltage waveforms are in phase?

If current and voltage of an AC are in phase, then the "power factor" is 100%, and the load is a pure resistance, with no inductive or capacitive reactance (at least at the operating frequency of the AC). Read More

### What is the household AC electrical power mains voltage in Sweden?

Sweden uses the standard European voltage of 230 volts (+10% -6%) Read More

### Why you use ac for transmission?

AC is used for transmission because AC can be stepped up in voltage with a transformer, and then stepped back down at the destination. Since power is voltage times current, a higher voltage requires a smaller current to achieve the same power. Since the current carrying capacity of wires is based on wire size, a smaller wire size can be used to transmit the lower current. Read More

### Does AC have to be converted to DC in order to bury high voltage power lines?

No, there are many instances where AC high voltage lines are installed underground. Where an industrial building has an electrical vault within the building, the high voltage is brought to it using high voltage cables in conduit to supply the vault with primary voltage. These types of installations are usually only used where the customer uses a high volume of electrical power. Read More

### What converts the wall outlet from ac to dc power?

A rectifier, as a minimum, if not a complete "power supply" or "battery eliminator" designed to provide the required DC voltage and amps from the AC source. Read More