Contents hide 1. Q1. What is Q factor of coil? $$Q=\frac{\omega L}{R}$$ Q factor for a coil is defined for a given frequency as the ratio of inductance L to the resistance R of a coil. Explanation: Greater coil area presents less opposition to the formation of magnetic field flux, for a given amount of field force (amp-turns). For coils this refers to the ohmic losses of the coil-wire. The reciprocal value of quality is the loss factor (d). It is based on a ratio of the resonant frequency (i.e., “fc”) and its 3dB bandwidth (i.e., “B”). Previous question Next question. Inversely related to the fraction of the energy in an oscillating system lost in one oscillation cycle. Q-meter is an instrument designed for measuring Quality factor (Q) of a coil as well as for the measurement of inductance, capacitance, and resistance of an electric circuit at radio-frequency. Q-meter is also known as RLC meter. Coils easily pass direct current but act as a resistor to alternating current. Calculate the Quality Factor of a coil or capacitor with the Q Factor Calculator and learn on the go with the integrated live example The quality factor of a resonator is related to the bandwidth and is a measure of its resonant frequency response. All other factors being equal, greater coil area (as measured looking lengthwise through the coil, at the cross-section of the core) results in greater inductance; less coil area results in less inductance. Question is ⇒ To increase Q factor of a coil, the wire should be, Options are ⇒ (A) long, (B) thin, (C) thick, (D) long and thin, (E) , Leave your comments or Download question paper. "Q" stands for "Quality Factor". Quality Factor of Inductor: Every inductor has a small amount of resistance in addition to its inductance. The enhancement of the Q factor can be achieved by increasing the number of turns (n) and the thickness of the conductive layer. The sharpness of resonance increases with an increase in damping and decreases with a decrease in damping. Technically, it is the ratio of the stored energy of the LC resonator circuit to discharged energy. However, although the coil is a conductor, the wire winding has certain resistance components (R). To increase Q factor of a coil, the wire should be: A. For an intraocular coil, the Q factor must be enhanced in order to minimize the power loss in the device as well as to maximize the transfer efficiency of power telemetric link. Quality factor (Q) or coil Q-factor is a dimensionless unit for the losses of a coil, quartz, or a resonator. $$Q=\frac{F_{0}}{F_{3dB}}$$ How does sharpness of resonance depend on damping? Use this online inductor Q factor calculator to calculate inductor quality factor (Q factor) within the fractions of seconds. Q Factor = 1/ Power Factor=1/Cosθ= Z/R … (Where Power Factor Cosθ = R/Z) Circuit Diagram of Q-meter 2. This behavior is called inductive reactance. Generally, the quality of the coil will be better if its resistance R-value is low. They are inversely proportional for the coil quality and are calculated from the ratio of reactance to ohmic resistance. Opposite of the Power factor is called the Q-Factor or Quality Factor of a Coil or its figure of merit. Q is inversely related to the range of frequency over which the system will exhibit resonance. 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. Applications of Q … The higher the frequency of the alternating current, the higher the inductive reactance. Q-factor, or quality factor, characterizes how under-damped a tuned LC resonator circuit of the antenna coil is. The quality factor (Q) applies to any resonant circuit component; most often the quality factor of the coil determines the overall Q of the circuit. 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