When the frequency of the voltage applied to a series RC circuit is decreased, the impedance remains the same decreases increases doubles TRUE ANSWER : ? YOUR ANSWER : ?
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is 12 kHz 18 kHz 0 Hz 6 kHz TRUE ANSWER : ? YOUR ANSWER : ?
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle remains the same increases becomes erratic decreases TRUE ANSWER : ? YOUR ANSWER : ?
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is 19.52 W 275 W 195.2 W 25 W TRUE ANSWER : ? YOUR ANSWER : ?
The complex number 40 angle 55° is equivalent to 22.94 + j32.76 45.88 + j65.52 55 + j55 40 + j40 TRUE ANSWER : ? YOUR ANSWER : ?
A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is Z = 150 angle – 90° Ω Z = 150 Z = 150 –90° Ω Z = 150 angle 180° Ω TRUE ANSWER : ? YOUR ANSWER : ?
In a series RC circuit, when the frequency and the resistance are halved, the impedance is halved is reduced to one-fourth cannot be determined without values doubles TRUE ANSWER : ? YOUR ANSWER : ?
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit decreases does not change increases decreases to zero TRUE ANSWER : ? YOUR ANSWER : ?
In the complex plane, the number 4 + j3 is located in the second quadrant third quadrant first quadrant fourth quadrant TRUE ANSWER : ? YOUR ANSWER : ?
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? 411.3 V 0.411 V 4.11 V 45.6 V TRUE ANSWER : ? YOUR ANSWER : ?