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You may be mixing up 'impedance' with 'apparent power'.
Impedance is the vector sum of an a.c. load's resistance and reactance, and is expressed in ohms. Apparent power is the vector sum of true power and reactive power, and is expressed in volt amperes.
Apparent power is also the product of the square of the load current and the impedance of the load.
What else can I help you with?
Which is better high input impedance or low input impedance and why?
That depends on the output impedance. In electronic we use voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance. An input impedance is called also a load impedance or an external impedance. An output impedance is called also a source impedance or an internal impedance.
How to distinguish between characteristic impedance and input impedance?
The characteristic impedance or surge impedance belongs to uniform transmission lines.In electronic gears we use voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.
Input impedance is greater than to load impedance?
In electronic gears we use voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.
What is meant by an output impedance of amplifier?
Output impedance of an amplifier refers to the resistance that the amplifier presents to its load when it is in operation. It affects how the amplifier interacts with connected devices, influencing voltage levels and power transfer. A low output impedance is generally desirable as it allows the amplifier to drive loads more effectively, maintaining signal integrity and minimizing distortion. In contrast, a high output impedance can lead to signal loss and reduced performance when driving loads.
Why is output impedance kept low?
To get all the audio voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is at least ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.
What is meant by apparent?
You may be mixing up 'impedance' with 'apparent power'.Impedance is the vector sum of an a.c. load's resistance and reactance, and is expressed in ohms. Apparent power is the vector sum of true power and reactive power, and is expressed in volt amperes.Apparent power is also the product of the square of the load current and the impedance of the load.
What is apparent impedance of a motor?
commonly for motors we use 20% impedance..
What is the ratio of apparent power to true power?
The ratio of apparent power to true power is called 'admittance', expressed in siemens. Admittance is the inverse of impedance.
How do you convert percent impedance of transformer to impedance value?
The apparent impedance looking into a transformer from one side will not be the same as looking in it from the other, which is why percent impedance is used. If you are looking from the high voltage winding (I'm labeling #1) to the low voltage winding (#2), you must scale the percent impedance as follows: (% impedance) x (Winding #1 nominal voltage)^2 / (transformer base VA)
What is meant by impedence?
To get all the voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.
What is meant by reflected impedance?
reflected impedence is a tool to analyse resonant coupling..
What is meant by matching?
Impedance matching is the electronics design practice of setting the input impedance of an electrical load equal to the fixed output impedance of the signal source to which it is connected. That is done usually in order to maximize the power transfer and to minimize all reflections from the load. Zinput = Zoutput.
Which is better high input impedance or low input impedance and why?
That depends on the output impedance. In electronic we use voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance. An input impedance is called also a load impedance or an external impedance. An output impedance is called also a source impedance or an internal impedance.
What is the apparent magnitude of the primary star on Libra?
If by primary, brightest is meant, Zubeneschamali (Beta Librae) is the brightest star in the constellation Libra with an apparent magnitude of 2.61.
What is meant by the terms acoustic impedance and attenuation?
Acoustic impedance is the measurement that indicates how much sound pressure the vibration of molecules at a given frequency is generated. Attenuation refers to the gradual loss in intensity through a medium, such as light and sound in water.
What is the degree of resistivity?
Assuming electrical resistivity is meant, the Ohm is the simple measure.For AC quantities, impedance, still measured in Ohms is the unit, but with a phase angle included.add. The concept of impedance has been applied very usefully to Electrical transmission.Acoustic waves at least have two components (velocity and pressure), but the only application of impedance in that area seems to be in the measurement of sound absorption [in the impedance tube method].The concept of impedance should be able to be applied to thermal transfer as well, but my knowledge is deficient.
Would not reduce resistance in a copper wire?
Resistance will only be reduced by changing the thickness of the wire or the wire's temperature. It's apparent impedance can be changed by placing it in an electric field as well.
