why does electricity board of india supply A.C voltage in homes?
108567
Simply put A.C. is easy to transform, from one voltage to another, with relatively little loss. Higher voltages are used for long distances, for example the common wooden power poles are 10,000-80,000V but houshould Power in U.S. is only 120/240V (Probably between 100-300V? in India)
261277
It's simple do this job. First of all you need to set your volt meter to a specific voltage level. Like if you want to check voltage of batteries, it ranges between 1.5 to 14 volts. So set your volt meter dail to DC (Direct Current) with this voltage specification.\nFor checking voltage in your house, its a 110-120 V or 220-240 V. This depends on your location. So now you have to set the dail to AC (Alternating current. THe symbol of AC is " ~ ".\n\nI', also a site here. It would solve the job definitly.\n\n\nhttp://www.ehow.com/how_16767_voltmeter.html
519299
Lower voltage means less electrical pressure, so likely less power consumption.\n\nProbably what you are seeing is line voltage fluctation due to induction devices coming on-line (motors, fluorescent lights, etc.)  Induction devices cause a power phase shift ("power factor") which definitely cause a negative power impact (higher kWh).\nWhen it gets bad enough, the power company will make you install capacitors to counteract the inductive load.  \n\nWhen the phase shift reaches 90°, all power goes into oscillating the current (and making heat) and none into the load.
1132650
Responses without sources aren't answers, just opinions.\n\nA higher frequency results in a smaller lighter transformer (hence usually less expensive) for the same capacity.\n\nTo indiantrumpet: nice to see that you posted a verifiable source.
73359
Intially it was ignorance , then it became a matter of convenience...The terminologies did not change..people still refer to it as AC voltage and DC voltage..just like People refer to siemens as mho in some places..It just became a standard term
972206
For computer to do it, I would have been thinking a short in the PC's power supply, for two, no way. I am guessing your computers are connect via the same point of double adapter somewhere and have a suspision that there is a break in the Earth within the cables or adapter somewhere.\n\nThis means the chasis of your computer will not discharge and slowly creap up to high voltages over time, even though the PC's are not on.
302920
If you have a 220v line going into your house, sure.  Otherwise.. no.  Most homes have 110/120 lines going into them.
105119
Yes, the surge protectors are needed. If you have a spike of energy which A/C power often gets, it needs to be regulated and your home or office power outlet does not provide that feature. It is simply better to have it than not. Belkin is a good provider of surge protectors for home and office use.
632448
Yes. Definitely.\n\nA/C adaptor is an Alternating Current.\nPower supplies are custom units of power management, it might be D/C (Direct Current), so it's really important to pay attention to them, or you could fry your electronic.
643695
From electricity...the term alternating current/direct current.
970722
Electrical power is a little bit like the air you breathe: You don't really think about it until it is missing. Power is just "there," meeting your every need, constantly. It is only during a power failure, when you walk into a dark room and instinctively hit the useless light switch, that you realize how important power is in your daily life. You use it for heating, cooling, cooking, refrigeration, light, sound, computation, entertainment... Without it, life can get somewhat cumbersome. \n\nPower travels from the power plant to your house through an amazing system called the power distribution grid. \n\nThe grid is quite public -- if you live in a suburban or rural area, chances are it is right out in the open for all to see. It is so public, in fact, that you probably don't even notice it anymore. Your brain likely ignores all of the power lines because it has seen them so often. In this article, we will look at all of the equipment that brings electrical power to your home. The next time you look at the power grid, you will be able to really see it and understand what is going on! \n\nfor more pl. visit:\nhttp://www.howstuffworks.com/power.htm
275873
The Heath AC voltmeter is illustrated in the link.  Click on the diagram to enlarge it.
301187
that depends of it's power. If you want electricity for 3 houses it's affordable. For 3000 it's a goverment issue :)
1005273
because you dont have a surge protector\nbuy one and you wont need to worry
1043633
If the same specified voltage is applied, the coil will work with D.C.\n\nThe r.m.s voltage of a.c is defined as that voltage when applied will give the same  heating power as a d.c.voltage.
735893
Yes, a live conductor is a phase conductor. One of three normally exept in domestic premises.    What is the question?
549750
For a period of time in the early 20th Century there WERE in fact B batteries. They were used to supply the ANODE voltage ( Plate voltage ) in vacuum tube devices like early radio equipment.  With the improvements that soon followed in converting AC to DC, it became less expensive to 'develop' the B voltage from a circuit called a 'power supply' and use of B batteries was confined to  'portable' devices.\n\nWith the development of the transistor, B voltage was no longer needed at all, and B batteries virtually disappeared from the market.