A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is 6 kHz 12 kHz 18 kHz 0 Hz TRUE ANSWER : ? YOUR ANSWER : ?
Point +4 on the complex plane is 4 units right of the origin on the real axis 4 units left of the origin on the real axis 4 units above the origin on the j axis 4 units below the origin on the j axis TRUE ANSWER : ? YOUR ANSWER : ?
In the complex plane, the number 14 – j5 is located in the third quadrant first quadrant second quadrant fourth quadrant 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 3.14 mS + j2.12 mS 2.12 mS + j3.14 mS 318.3 212 TRUE ANSWER : ? YOUR ANSWER : ?
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 1.9 V 27 V 3 V 19.2 V TRUE ANSWER : ? YOUR ANSWER : ?
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit decreases decreases to zero does not change increases TRUE ANSWER : ? YOUR ANSWER : ?
A positive angle of 30° is equivalent to a negative angle of –30° –180° –60° –330° TRUE ANSWER : ? YOUR ANSWER : ?
A 47Ω resistor and a capacitor with 150Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is Z = 47Ω + j150Ω Z = 197Ω Z = 103Ω Z = 47Ω – j150Ω TRUE ANSWER : ? YOUR ANSWER : ?
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18? 3.46 2.16 21.63 4.24 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? 45.6 V 411.3 V 0.411 V 4.11 V TRUE ANSWER : ? YOUR ANSWER : ?