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The Q factor of a coil, sometimes called the unloaded Q factor, is the ratio of the energy stored in the coil to the energy dissipated in the resistance of the wire.

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12y ago

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What is the reciprocal of the power factor?

impedance/resistance


What is definition of Q of a coil?

The Q factor (quality factor) of a coil is a measure of its efficiency in storing energy and transferring energy to a load. It is calculated as the ratio of the reactance of the coil to its resistance. A higher Q factor indicates lower energy losses in the coil.


The Q factor of a radio coil is?

if its an LCR circuit then Q=wL/R where W=angular frequency L=Inductance of the coil R=resistance of the coil


How do you measure Q factor of a coil?

The Q factor, or quality factor, of a coil can be measured by determining the ratio of its inductive reactance to its resistance at a specific frequency. This is typically done by applying an AC signal to the coil and measuring the voltage across it and the current flowing through it. The Q factor is calculated using the formula ( Q = \frac{X_L}{R} ), where ( X_L ) is the inductive reactance and ( R ) is the resistance. Alternatively, it can be measured using the bandwidth method, where the Q factor is derived from the resonant frequency and the bandwidth of the coil's response curve.


What is the power factor of a coil?

Power factor is the cosine of the phase angle between voltage and current. In a purely resistive load, like a toaster, since the phase angle is zero, the power factor is 1. In a theoretically purely inductive or capacitive load, with the phase angle at 90 degrees, the power factor is 0. Power factor is also the ratio of apparent power versus true power, or watts versus volt-amperes.


When q decreases in a col pits oscillator the frequency of oscillation is?

When ( Q ) decreases in a coil-pits oscillator, the frequency of oscillation increases. This is because the quality factor, ( Q ), is inversely proportional to the bandwidth of the oscillator. A lower ( Q ) value means a wider bandwidth, resulting in a higher frequency of oscillation.


Why should Q point be fixed?

Q in a coil is the ratio of inductance to resistance unless the dimensions or the material changes the Q remains the same a synonym for Q is efficiency no perfect coil exists RC oscillators are stable since Q is fixed


What is coil span factor and distribution factor?

coil span or coil pitch is defind as the distance mesured in terms of armature slots(or armature conductors) between two sides of a coil.


What is quality factor for choke coil?

the quality factor for choke coil is impedence divided by resistance in a given circuit


What is the unit of quality factor of RLC series circuit?

The selectivity or sharpness of series resonant circuit is measured by quality factor or Q factor.It is defined as the ratio of the voltage across the coil or capcitor to the applied voltage.In other words it refers to the sharpness of tuning at resonance. Q = voltage across L or C ( in volts) / applied voltage ( in volts ) Q = 1/ R * ( L/C)^ 0.5 Q is just a mere number having values between 10 to 100 for normal frequencies.So it has no unit. Circuit with high Q values would respond to a very narrow frequency range and vice versa.Thus a circuit with high Q value is sharply tuned while a circuit with low Q value has a flat resonance.Q factor can be increased by having a coil of large inductance but of small ohmic resistance.


What is q factor in rlc series circuit?

In a RLC series circuit the Q factor magnify the voltage to the circuit.


Q factor of low pass filter?

The Q factor is describing how sharp the dropoff of the filter is relative to the pass band. Wikipedia has a decent writeup on Q factor. The more components you use to make the filter, and the lower the cutoff frequency, the higher the Q will be.