RC Circuits A 47Ω resistor and a capacitor with 150Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is Z = 103Ω Z = 47Ω – j150Ω Z = 47Ω + j150Ω Z = 197Ω Z = 103Ω Z = 47Ω – j150Ω Z = 47Ω + j150Ω Z = 197Ω ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A positive angle of 30° is equivalent to a negative angle of –330° –60° –30° –180° –330° –60° –30° –180° ANSWER DOWNLOAD EXAMIANS APP
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 = 5XC R > XC R = XC R < XC R = 5XC R > XC R = XC ANSWER DOWNLOAD EXAMIANS APP
RC Circuits When the frequency of the voltage applied to a series RC circuit is decreased, the impedance increases remains the same decreases doubles increases remains the same decreases doubles ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A 47Ω resistor and a capacitor with a capacitive reactance of 120 are in series across an ac source. What is the circuit impedance, Z? 73Ω 167Ω 129Ω 12.9Ω 73Ω 167Ω 129Ω 12.9Ω ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A 12 kΩ resistor is in series with a 0.02 μF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 angle 0° mA, what is the source voltage expressed in polar form? 0.411 V 45.6 V 4.11 V 411.3 V 0.411 V 45.6 V 4.11 V 411.3 V ANSWER DOWNLOAD EXAMIANS APP
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