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Power factor is a measure of the ratio between the "True Power" and the "Apparent Power" of a system.
THe variation from unity arises from the effect of certain components (namely capacitors and inductors) on an AC waveform, causing a phase shift between the current and the voltage.
As a DC supply does not suffer from these reactive losses there is no reactive power and the current and voltage are always "in phase".
With a phase angle of 0 degrees, the power factor is the cosine of the angle... cos 0 = 1 therefore unity power factor!
What else can I help you with?
What is the power factor of a DC system?
It would be unity, or 1.0. Since the voltage in a DC circuit does not vary with time, there can be no phase displacement of the current waveform, and therefore the current could not lead or lag the voltage waveform.
Full form of DC power supply?
DC Power is Direct Current Power Supply.
What the conclusion that can take in multiple dc power supply?
conclusion of dc power supply 9V
What is the value of ripple in the ideal dc power supply?
In an ideal DC power supply, there is no ripple.
Is the metro rail train using ac or dc power supply?
dc power supply
How you convert a power supply into 12v DC?
DC 12V power supply can convert 110/220V AC power source to 12V DC.
Why you use dc supply in generator protection panel?
The DC supply may supply power to trip breakers, or to power the protective relays.
Power factor of dc ballast is 0.8. what will be the power factor same ballast in AC?
Power factor is an AC only term, and has no meaning for DC.
How you improve power factor in synchronous motor?
Power Factor measures the difference in phase between the current and voltage. When they are in phase the Power Factor is defined as 1. When out of phase the value is less than 1. If they are 180 degrees out of phase the Power Factor will be zero.
Output DC power supply?
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Applications of variable DC power supply?
Variable dc supply is applicable in loads that are variable.
What are the applications of variable DC power supply?
Variable DC power supplies are commonly used in electronics labs, production lines, and testing environments. They are used to power and test electronic devices such as electrical components, circuits, and sensors. Variable DC power supplies are also used in research and development for prototyping and experimenting with different voltage levels.
