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What is the phase difference between the current through the resistor and inductor in an AC circuit?
The phase difference between the current through the resistor and inductor in an AC circuit is 90 degrees.
Why capacitor reduce gain of ce amplifier?
Where is this capacitor in the circuit?A capacitor across the emitter bias resistor actually increases the AC gain because it bypasses that resistor, by increasing the ratio of collector impedance to emitter impedance which determines the amplifier voltage gain.A capacitor across the base input resistor actually increases the AC gain because it bypasses that resistor, by decreasing the attenuation of the input signal by the input circuit network.
Is a Resistor a nonlinear device?
It is a linear device if it is not a wire wound resistor. These become non linear to AC at high frequencies because of their inherent inductance.
How a ballast resistor convert DC into ac?
A resistor, by itself, can not convert DC into AC.
Why would the gain go up in a circuit board when you put an emitter capacitor in the circuit?
The emitter resistor is there to provide DC bias to the base. If it is not bypassed, then the AC output signal is also dropped across this resistor, effectively lowering the output swing. When a bypass capacitor is added, the DC bias still flows through the resistor, but the capacitor acts as a short circuit for the AC signal, so that the AC signal is not reduced. The capacitor selected must be large enough so it appears as a very low resistance at the lowest frequency the amplifier will pass.
What device magnetically couples ac voltages from one point in a circuit to another?
A transformer is the answer to this question.
What are the two main types of uninterruptible power supplies?
stand by: battery powered circuit is used when AC input fails inline device: battery powered circuit is used continually Verified :"Inline & standby" . A+ test answer 19 June 2011.
What is driven RL circuit?
A driven RL circuit is a circuit that contains a resistor (R) and an inductor (L) connected in series with an external source of alternating current (AC) or voltage. The external source provides energy to the circuit, driving the current through the inductor and resistor. This circuit can exhibit interesting behavior such as resonance and phase shifts due to the interplay between the inductive and resistive components.
A capacitive device in a single phase ac circuit causes the current waves to?
Lead the voltage waves
What is the average value of the alternating current (AC) in the circuit?
The average value of the alternating current (AC) in the circuit is calculated by finding the root mean square (RMS) value of the current waveform. This value represents the equivalent direct current that would produce the same amount of power dissipation in a resistor as the AC current.
Can rheostat run on AC current and DC current?
Yes, a rheostat can be used with both AC and DC currents. The rheostat's variable resistor can be adjusted to control the current flowing through a circuit, regardless of whether it is AC or DC.
What is a brake chopper?
It is an electrical device (and not a electronic device) which is used as a heating resistor to brake variable frequency drives (ac Drives) externally, (and nowhere related to changing any wave form).
