Karamin Kirki: Ta'ifuka, Muhimmin Nau'o'i da Amfani

Misalai da Yawan Alternating Current

Yawan alternating current (AC) shine yawan electric current wanda ya kawo shiga da kuma ya zama tsari na baya. Duk da cewa direct current (DC), wanda ta yi shiga tare da haka, AC ana iya amfani a kan in gudanar da tasiri a wurin da suka da musamman ta hanyar in karfi da kalmomi. AC shine hali na yawan electric energy wadanda duk abubuwa da alhakin muhalli masu yara suke amfani da su idan suka fito zuwa socket.

Hali na waveform na AC za su iya canzawa saboda ingantaccen source da load. Hali na waveform mafi yawan da ake amfani shine sine wave, wanda ya fi sannan da tsari. Wasu hali na waveforms sun hada da square waves, triangular waves, da sawtooth waves, wadanda suka da mutane da ma'adin da suke amfani da su.

Me Ya Kula Yawan Alternating Current?

Wata hali na kula yawan AC shine ta hanyar root mean square (RMS) value. RMS value na waveform na AC shine DC value na biyu wanda zai iya bayarwa da yadda sama da heat a resistor. RMS value zai iya kula ta hanyar squaring instantaneous values na waveform na AC, kula average over one cycle, kuma kula square root.

RMS value na sinusoidal AC waveform shine equal to its peak value divided by the square root of two:

RMS value na square AC waveform shine equal to its peak value:

RMS value na triangular AC waveform shine equal to its peak value divided by the square root of three:

RMS value na sawtooth AC waveform shine equal to its peak value divided by the square root of six:

Wata hali na kula yawan AC shine ta hanyar frequency. Frequency na waveform na AC shine number of cycles or periods wadanda suka faruwa a lokacin da second. Unit of frequency shine hertz (Hz), wanda ya nufin cycles per second. Misali, 60 Hz AC waveform ya kammala 60 cycles a lokacin da second.

Frequency na waveform na AC shine related to its period, wanda shine time it takes for one cycle to complete. Period zai iya kula ta hanyar dividing one second by the frequency:

Frequency zai iya kula ta hanyar dividing one second by the period:

Daga Baka Me Ana Amfani Da Yawan Alternating Current?

Yawan alternating current ya fi damar advantages da dama saboda power transmission and distribution. Wadannan advantages sun haɗa da:

• Ease of generation: AC zai iya kula ta hanyar rotating a coil of wire in a magnetic field or by rotating a magnet around a coil of wire. This does not require any commutators or rectifiers, which are needed for DC generation.

• Voltage transformation: AC zai iya stepped up or stepped down easily by using transformers, wadanda su devices that use electromagnetic induction to change the voltage and current levels of an AC circuit. This allows AC to be transmitted at high voltages and low currents, which reduces the power loss due to the resistance of the wires. It also allows AC to be delivered at different voltages and currents for different applications and devices.

• Power factor correction: AC zai iya adjusted to improve its power factor, wanda shine measure of how efficiently an AC circuit uses power. Power factor is defined as the ratio of real power (the power that does useful work) to apparent power (the product of voltage and current). A low power factor means that some power is wasted as reactive power (the power that oscillates between the source and the load). Reactive power can cause voltage fluctuations, overheating, and increased losses in an AC circuit. Power factor can be improved by adding capacitors or inductors