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What is an alternating current transmitted at high voltages but usually at low voltages?
Wiki User
∙ 10y ago
I assume you mean "Why" rather than "What". Simply stated, there are fewer transmission losses using high voltage, so the large power lines run at high voltage, but for home use, high voltage would be dangerous and would require considerably more insulation, so it is stepped down to about 115V RMS (root mean square average) for home use. Fewer people get killed and fewer houses burn down that way.
Reynold Kuphal
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What are the voltages in secondary transmission electric lines?
A: Those voltages are called distribution voltages to differentiate from transmission voltages. And that varies from state to state and locals . Usually around 10kv to 20 kv
When electricity travels long distances it is better to have it at higher voltages?
when transmission we usually use high voltages becoz at higher voltages current is less(p=vi,voltage is inversly proportional to current at constant power) so that we can minimize copper losses i2R losses.
What is function of auto transformer?
A transformer is a device that changes an electrical voltage or current from one level to another. (In radio frequency applications, it is used to couple the RF electronic circuits.)Transformers are used to:Convert high voltage alternating current (AC) to desired low voltage alternating current (AC). Such transformers are called step down transformers.Convert low voltage alternating current (AC) to desired high voltage alternating current (AC). Such transformers are called step up transformers.Electrically separate one part of the circuit (or any other electrical system) from the other part, termed as 'electrical isolation'. Such transformers are called isolation transformers.The transformation may involve the loss of some power as waste heat.(see related question)
High AC voltages are usually measured with?
They are usually measured using potential transformers that lower the voltages so that normal metering equipment can be used. Potential transformers PT's are almost no different that regular transformers except they are designed to be extremely accurate since they are used for metering purposes.
What is induction and conduction?
Induction means "induced current." An inductor (like a coil) drives the current from it's own magnetic fields when a voltage source is applied to either end of the coil. Another way current is induced is when a current in one wire creates a magnetic field which can "induce" current in another wire that is parallel to the first wire.Conduction just means that a material has electrical properties that allow current to flow such as copper or other conductive metals. Usually denoted in math as a lower case Greek symbol sigma.CommentCurrents are not induced. Voltages are induced.
Electric current from a generating plant is?
Electric current from a generating plant is a alternating current transmitted at high voltages, but usually used at low voltages.
A current that moves back and forth is?
Possibly, you are thinking of Alternating Current?
What does power line carry voltage or current?
It carries a current at the set voltage of the line. Current is the actual electricity that flows along the line and is used up in your electric appliances whereas voltage is the difference between the energy being generated at the station and ground.AnswerIt carries both voltage and current. Voltage exists between each line conductor, and current flows through each line conductor.
Why the solar panel power cannot be transfer to the meter?
Solar panels are direct current (DC), the electric in the meter is alternating current (AC). You need a special transformer to convert from direct to alternating. This usually has to be done since everything in your house usually runs on alternating current.
What type of electric current is used in household?
Alternating electrical current is usually used in household.
What does AC mean about current flow?
AC means Alternating Current. Alternating Current changes direction constantly, usually at 60Hz (US, Canada, and others) or 50Hz (UK and others).
What is the full form of ac and dc voltage?
Full Form of A.C. and D.C. supply is : A.C.= Alternating Current D.C.= Direct Current Direct Current and Alternating Current are two methods for transmitting electricity. In Direct Current, the individual electrons start at the power source and travel all the way to and through the load (such as a light bulb) and all the way back to the opposite terminal of the power source. This technique works well for small applications where the electricity is not being transmitted over any great distance, and relatively small voltages are being used. When distance and high voltage are required, Alternating current is used. In Alternating Current, the direction in which the electrons travel is flipped, usually sixty times per second. This results in each of the electrons moving only a small distance before being pulled the opposite way. This technique of transferring electricity is much more efficient because each electron only moves across a small distance, making the maximum power that can be transmitted dependent upon how many ambient electrons are in a wire. While in Direct Current, the maximum power that can be transmitted is limited by how many electrons a wire can transport around the entire circuit.
What is an electric current that periodically changes direction?
There are two types of electric current, DC or direct current and AC or alternating current. The power delivery to homes in most places in the world is AC or alternating current. This is where the electrons are pushed one way then back the other way with usually 100 or 120 changes in direction per second. This produces 50 or 60 forward/back cycles every second called 50Hz or 60Hz.
Can alternative current be turned into direct current?
By "alternative" I presume you mean "alternating". Yes it can by using a device called a rectifier then some sort of bypass circuit to conduct the alternating current to ground, usually just a capacitor.
Current that reverses direction in the regular pattern is called?
This is known as a direct current or DC. The two major types of currents are AC (alternating current) and DC (direct current). In AC the charges move back and forth, but in DC the charges flow in JUST ONE DIRECTION. Due to this characteristic it will not reverse direction like AC can.
What current does the television in your living room run on?
AC or Alternating Current. 115 Volts in the U.S. and other parts of the world. 224 Volts in Europe and other countries.
What type of electricity is mains electricity?
AC (Alternating Current) usually provided at either 110V or 220V.
