EXAMIANS
To increase the current in a series RL circuit, the frequency
YOUR ANSWER : ?
YOUR ANSWER : ?
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
YOUR ANSWER : ?
When the frequency of the voltage applied to a series RL circuit is decreased, the impedance
YOUR ANSWER : ?
A 12 kΩ resistor is in series with a 90 mH coil across an 8 kHz ac source. Current flow in the circuit, expressed in polar form, is I = 0.3 angle 0° mA. The source voltage, expressed in polar form, is
YOUR ANSWER : ?
A 1.2 kΩ resistor is in series with a 15 mH coil across a 10 kHz ac source. The magnitude of the total impedance is
YOUR ANSWER : ?
The voltages in Problem 5 are measured at a certain frequency. To make the resistor voltage less than the inductor voltage, the frequency is
YOUR ANSWER : ?
In a parallel RL circuit, there are 3 A rms in the resistive branch and 3 A rms in the inductive branch. The total rms current is
YOUR ANSWER : ?
When the frequency of the voltage applied to a series RL circuit is increased, the phase angle
YOUR ANSWER : ?
A 1.5 kΩ resistor and a coil with a 2.2 kΩ inductive reactance are in series across an 18 V ac source. The power factor is
YOUR ANSWER : ?
A 47Ω resistor is in series with an inductive reactance of 120Ω across an ac source. The impedance, expressed in polar form, is
YOUR ANSWER : ?