The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency is held constant must be increased has no effect must be decreased TRUE ANSWER : ? YOUR ANSWER : ?
In the complex plane, the number 4 + j3 is located in the second quadrant first quadrant fourth quadrant third quadrant TRUE ANSWER : ? YOUR ANSWER : ?
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit does not change decreases to zero decreases increases TRUE ANSWER : ? YOUR ANSWER : ?
In a series RC circuit, when the frequency and the resistance are halved, the impedance is halved cannot be determined without values is reduced to one-fourth doubles TRUE ANSWER : ? YOUR ANSWER : ?
A 120Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance? 37.9Ω 3.7Ω 14400Ω 4800Ω TRUE ANSWER : ? YOUR ANSWER : ?
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance increases doubles remains the same decreases TRUE ANSWER : ? YOUR ANSWER : ?
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? 167Ω 12.9Ω 129Ω 73Ω TRUE ANSWER : ? YOUR ANSWER : ?
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 318.3 2.12 mS + j3.14 mS 212 3.14 mS + j2.12 mS TRUE ANSWER : ? YOUR ANSWER : ?
What is the angular difference between +j4 and –j4? 270° 90° 30° 180° TRUE ANSWER : ? YOUR ANSWER : ?
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle increases decreases becomes erratic remains the same TRUE ANSWER : ? YOUR ANSWER : ?