RC Circuits An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist: R = XC R < XC R > XC R = 5XC R = XC R < XC R > XC R = 5XC ANSWER DOWNLOAD EXAMIANS APP
RC Circuits When the frequency of the voltage applied to a series RC circuit is increased, the phase angle remains the same decreases becomes erratic increases remains the same decreases becomes erratic increases ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 k. Current flow in the circuit is 460 mA 9.2 mA 4.6 mA 92 mA 460 mA 9.2 mA 4.6 mA 92 mA ANSWER DOWNLOAD EXAMIANS APP
RC Circuits Point +4 on the complex plane is 4 units right of the origin on the real axis 4 units left of the origin on the real axis 4 units above the origin on the j axis 4 units below the origin on the j axis 4 units right of the origin on the real axis 4 units left of the origin on the real axis 4 units above the origin on the j axis 4 units below the origin on the j axis ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A 2 k resistor is in series with a 0.015 F capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle? 707 and θ = –19.5° 2121 and θ = –19.5° 734 and θ = –38.9° 73.4 and θ = –19.5° 707 and θ = –19.5° 2121 and θ = –19.5° 734 and θ = –38.9° 73.4 and θ = –19.5° ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is Z = 150 angle 180° Ω Z = 150 –90° Ω Z = 150 Z = 150 angle – 90° Ω Z = 150 angle 180° Ω Z = 150 –90° Ω Z = 150 Z = 150 angle – 90° Ω ANSWER DOWNLOAD EXAMIANS APP
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