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How does the frequency of a changing magnetic field compare with the frequency of the alternating voltage that is induced?
A changing magnetic field generates an electric field and alternating currents are accompanied (or caused) by alternating voltages.
How does a two-phase system differ from a three phase system?
A two-phase system is archaic and you are unlikely to find it in use anywhere these days, so it is mainly of historical interest. A two-phase, three-wire system, consists of two phase voltages, displaced from each other by 90 electrical degrees, and a phase voltage which is 1.414 x phase voltage.A three-phase system consists of three phase voltages which are displaced from each other by 120 electrical degrees. In the case of a three-phase, three-wire, system, the line voltages are numerically equal to the phase voltages; in the case of a three-phase, four-wire, system, the line voltages are 1.732 x phase voltage.
How do you subtract two dc voltages using op-amps?
eşşeğin siki bizde bunu arıyorduk
Why the graph of breakdown voltage is cheaper than knee voltage?
Break down voltages happens at low voltages (.6 for silicon & .3 for germanium), whereas knee voltages at higher voltages. That's why its cheaper.
What are signals composed of pulses of precise positive voltages and zero voltages?
Digital
What is the meaning of voltages?
D.C. stands for direct current. A.C. is alternating current.
How does the frequency of a changing magnetic field compare with the frequency of the alternating voltage that is induced?
A changing magnetic field generates an electric field and alternating currents are accompanied (or caused) by alternating voltages.
What two voltages are present on a peripheral power connector?
What two voltages are present on a peripheral power connector?
Is a device that changes the voltage of an alternating current with little loss of energy?
The device you are referring to is called a transformer. Not only can a transformer increase voltage, it can decrease voltage as well. These are known as a step up transformer for increasing voltages and step down for decreasing voltages.
What two voltages do you have in your home?
I'm not sure they're "voltages" but if you're talking about the circuits, then the two types are series and paralllel.
When a device uses two batteries why do they have to be placed positive to negative?
Batteries placed in series (which is what you're describing) add their voltages together. Thus two 1.5 volt batteries give 3 volts in series ... IF they point in the same direction. If they point in opposite directions, you get zero volts.
When cells are connected in a series?
the cell will add all of the voltages to a lump sum.
What is the main advantage of using alternating current in the power grid?
Low loss transmission of power at high voltages for long distances then the ability to transform down to lower voltages near the point of usage, i.e. substations and pole transformers near residences.
Why are batteries sometimes joined in series?
Batteries are connected in series to add their voltages together. For example, two car batteries in series will give twenty four volts.
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.
How do you add voltages?
A: pay attention to current flow and assign +/-using algebraic mathematics
Why alternating current is use for electrical system?
The transmission of electrical energy requires very high voltages (for a given load, the higher the supply voltage, the lower the load current). To increase/reduce these voltages, you need transformers. Transformers are AC machines; they do not work with DC.
