RC Circuits A 470 resistor and a 0.2 F capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is 3.14 mS + j2.12 mS 2.12 mS + j3.14 mS 212 318.3 3.14 mS + j2.12 mS 2.12 mS + j3.14 mS 212 318.3 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 –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 Z = 150 angle 180° Ω 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 < XC R > XC R = 5XC R = XC R < XC R > XC R = 5XC 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? 129Ω 73Ω 167Ω 12.9Ω 129Ω 73Ω 167Ω 12.9Ω ANSWER DOWNLOAD EXAMIANS APP
RC Circuits When the frequency of the source voltage decreases, the impedance of a parallel RC circuit decreases increases decreases to zero does not change decreases increases decreases to zero does not change ANSWER DOWNLOAD EXAMIANS APP
RC Circuits In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is 3 V 19.2 V 27 V 1.9 V 3 V 19.2 V 27 V 1.9 V ANSWER DOWNLOAD EXAMIANS APP
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