RL Circuits A 47Ω resistor is in series with an inductive reactance of 120Ω across an ac source. The impedance, expressed in polar form, is 120 angle 68.6° 47 angle 68.6° 129 angle 31.4° 129 angle 68.6° 120 angle 68.6° 47 angle 68.6° 129 angle 31.4° 129 angle 68.6° ANSWER DOWNLOAD EXAMIANS APP
RL Circuits When the frequency of the voltage applied to a series RL circuit is decreased, the impedance cannot be determined without values does not change decreases increases cannot be determined without values does not change decreases increases ANSWER DOWNLOAD EXAMIANS APP
RL Circuits The voltages in Problem 5 are measured at a certain frequency. To make the resistor voltage less than the inductor voltage, the frequency is doubled decreased increased not a factor doubled decreased increased not a factor ANSWER DOWNLOAD EXAMIANS APP
RL Circuits A 470Ω resistor and a 200 mH coil are in parallel. Both components are across a 1.5 kHz ac source. The total admittance of the circuit, in polar form, is 218 angle –76° mS 12.18 angle 76° mS 12.18 angle –76° mS 12.60 angle –76° mS 218 angle –76° mS 12.18 angle 76° mS 12.18 angle –76° mS 12.60 angle –76° mS ANSWER DOWNLOAD EXAMIANS APP
RL Circuits Referring to Problem 23, the reactive power is 10 mVAR 100 mVAR 6.76 mVAR 148 mVAR 10 mVAR 100 mVAR 6.76 mVAR 148 mVAR ANSWER DOWNLOAD EXAMIANS APP
RL Circuits A 470Ω resistor and a coil with 125Ω inductive reactance are in parallel. Both components are across a 15 V ac voltage source. Current through the inductor is 32 mA 120 mA 152 mA 12 mA 32 mA 120 mA 152 mA 12 mA ANSWER DOWNLOAD EXAMIANS APP
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