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How only capacitors can give smooth ac voltage waveform when used in ac circuits?
Capacitors resist a change in voltage, inversely proportional to their capacitance. As a result, transients in the AC line tend to be filtered out.
What is the maximum absolute value reached by a voltage or current waveform?
define the maximum value of an ac wave form
Why is average voltage of full wave rectified voltage different from the rms value of an equivalent ac waveform?
the number u are seeking is 0.639
Is 12 volt DC a modified sine wave?
Not really. DC is not a sine wave at all. It is a flat line, in terms of time. On the other hand, if the DC is coming from a power supply that is rectifying AC and filtering it, but not regulating it, then under load conditions, it will exhibit a semi triangular waveform. It will increase when the input AC rises above the diode forward bias point and then it will follow the input AC. It will decrease linearly when the input AC reaches is peak and then starts back down, with a slope proportional to the load. As such, it is a periodic waveform, and by Fourier analysis, it is then a sum of various sine waves. Even if you don't want to get "technical" by looking at Fourier, you can still compare the semi triangular waveform with the input AC waveform, and see that they "fit together". So, yes, 12 volt DC from a power supply is a modified sine wave, unless, of course, there is a regulator stage in the power supply - in that case, it should be flat, as stated first, above.
Why it is useful to use rms notation for alternating current and voltage?
AC waveform is sinusoidal waveform it has both positives and negative cycles so we dont have a standard constant value to do Measurements so instead of using AC quantities we use ROOT mean square values which is obtained by dividing Vpp(peak to peak voltage) by 1.414AnswerThe rms-value of an AC current is the same as as the value of DC current that will do the same amount of work. For example, 10 A (rms) AC will do exactly the same amount of work as 10 A DC.
Why do you obtain more dc voltage than ac voltage in power supply design by using transformer?
You don't. Transformers only work with AC voltage. Their input will be an AC waveform, and their output will be an AC waveform. Other electronics are used to convert the stepped down AC waveform from the transformer to DC.
Is there any possibilty of ac and DC flows in conductor at a time and get DC and AC with two reference AC and DC?
A typical AC waveform is symmetrical about a zero crossing point. You can bias the AC with DC such that the AC waveform is symmetrical about the DC voltage.
How often the AC waveform repeats is known as the AC?
after every 6 units of time.
What is the period for an AC waveform with a frequency of 400Hz?
The period for an AC waveform with a frequency of 400Hz is ( \frac{1}{400} = 0.0025 ) seconds or 2.5 milliseconds. Period is the inverse of frequency, so it represents the time taken for one complete cycle of the waveform at that frequency.
Rate in which ac voltage waveform periodically repeats itself?
Frequency.
What do they mean with AC by amplitude?
AC (alternating current) amplitude refers to the maximum variation of the current or voltage in an AC waveform from zero to its peak value. It represents the strength or intensity of the alternating waveform at any given time. The amplitude of an AC signal is important for determining the power and performance of electrical devices that use AC power.
What is the difference while applying kcl to dc and ac circuits?
KCL is Common to both AC and DC. Only the waveform or AC and DC will differ
Is an AC circuit never zero?
No , an AC waveform goes to 0 60 times a second ( if its a 60 hz wave form )
The time between any two similar points on an AC waveform is known as?
wavelength
Is AC a wave or a wave form?
AC stands for "alternating current," which is a type of electrical current that periodically changes direction. It is not a wave but can be represented by a waveform, which shows how the voltage or current changes over time in a repetitive manner. So, AC is not a wave itself, but it produces a waveform when graphed.
What are the types of AC waveform?
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What is the waveform of AC through a straight wire?
Either sinusoidal, or can always be represented as a sum of sinusoids.
