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First easy generation of electrical energy at low cost is by the phenomenon of electromagnetic induction
By using generators, ac and dc can be produced. AC by using slip rings and DC by using split rings.
The electrical power loss is mainly in the form of production of heat which is also known as I2R loss. To reduce such unwanted loss, we have to reduce the resistance. But that has its own limit. So better reduce the current. This is possible only when the voltage is stepped up to a larger extent. This is done using step up Transformers. Only ac can be used in transformer and not dc.
Thus ac is much more preferable to dc.
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ac is prefer over dc because dc is more dangerous then ac if voltage is high it can kill a person
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoAc 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.
Wiki User
∙ 12y agoAc source of current are provided with better switchgear..which are economical as well as smaller in size...we are using much simpler switch for all aur connection but if we are using DC..the switch will become much complex and bigger in size...
Wiki User
∙ 12y agoThe main reason is that ,power control is more difficult in the case of dc ie,the power from generating station to the receiving station...and voltage changing also a problem requires additional circuitry those are bulky, less efficient ,and very costly ...
but in ac , by using a TRANSFORMER these difficulties can overcome.........and transformer is the highly efficient electric machine....
Wiki User
∙ 11y agoAC supply commonly used in all over world because AC is available easy.
Ac equipments and appliances available on cheap price and easy to fault finding
like AC motors having only stator winding.
AC can easily convert in DC supply by using rectifier circuits . DC is probably difficult to convert in AC supply . thereby AC is popular rather then DC.
Wiki User
∙ 11y agoBecause AC can be generated hundreds or thousands of miles from the consumer whereas DC must be generated within a few miles. The number of DC generation plants required would be prohibitively expensive.
Wiki User
∙ 13y agoAc is portable. AC can be stepped up and down with transformers for transmission over long distances.
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Which of what instrument used to convert ac to DC?
We don't use an 'instrument' to covert a.c. to d.c.. Rather, we use a circuit called a 'rectifier'.
Why transformer action can take place in DC circuit?
Not clear what your question is. First of all, circuits are not classified as DC and AC. Circuits are what they are, and you can apply either AC or DC to any circuit. However, considering a circuit that was designed only for use with DC applied. Still your question is unclear. What is transformer action? "Transformer Action" happens in a transformer.
How kirchhoff laws will differ for AC circuit?
Kirchoff's Law is universally applicable, to AC as well as DC loops.
What are the similarities in AC and DC?
Both AC and DC are current methods in which electrons move along a wire
What are the electrical appliance that use AC?
Neither.AC is alternating currentDC is direct currentEither can be large or smallThe transmission losses are greater for (non superconducting) DC power so in most applications the absolute value of DC current will usually be lower than those in AC systems.
What happens if you use an ac circuit breaker instead of dc breaker?
A circuit breaker is easier to design for ac than dc because alternating current (ac) naturally goes to zero 100 or 120 times per second and this helps to extinguish any arc. Therefore an ac circuit breaker would not be suitable for dc assuming the same voltage and current ratings.
How can a radio use both DC and AC?
Radios use DC power supplies to operate. If a radio is powered from a mains AC supply, a power supply circuit will convert the AC supply to DC. Therefore, a radio may have both a DC and an AC power input but ultimately, the internal circuitry will always use DC.
Can use an ac rated fuse on a dc circuit?
if it matches the current rating.... then no problem.
Which of what instrument used to convert ac to DC?
We don't use an 'instrument' to covert a.c. to d.c.. Rather, we use a circuit called a 'rectifier'.
If AC is replaced by DC in a fluorescent lamp circuit will the circuit work?
No.
What kind of supply is given to the circuit?
ac supply is given and then in the circuit rectifier converts ac to dc
Can we use AC capacitor in surge suppression circuit DC?
A capacitor is a capacitor, no matter what circuits you use it in. There is no difference between one used in AC and one in DC, except perhaps the size that is appropriate.
Why transformer action can take place in DC circuit?
Not clear what your question is. First of all, circuits are not classified as DC and AC. Circuits are what they are, and you can apply either AC or DC to any circuit. However, considering a circuit that was designed only for use with DC applied. Still your question is unclear. What is transformer action? "Transformer Action" happens in a transformer.
How do you conver ac power into pulsating DC What devices you need?
rectifier circuit convert ac to dc signal
Why not you use ac instead of dc to electronic components?
AC is easier and cheaper to send from the generators to the consumers than DC is.
Is mosquito killing bat circuit ac?
No, it is DC
Why do you use alternating current in your homes rather than direct current?
Electronic appliances in our homes use dc to operate however externally they are connected to ac source because their internal circuit already contains rectifier. we use ac in our home due to: 1.safety:dc is dangerous then ac. 2.cost:appliances or material required in transmission of dc is costly
