In the complex plane, the number 14 – j5 is located in the fourth quadrant first quadrant second quadrant third quadrant TRUE ANSWER : ? YOUR ANSWER : ?
What is the angular difference between +j4 and –j4? 270° 30° 90° 180° 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 25 W 19.52 W 195.2 W 275 W TRUE ANSWER : ? YOUR ANSWER : ?
Point +4 on the complex plane is 4 units above the origin on the j axis 4 units below the origin on the j axis 4 units left of the origin on the real axis 4 units right of the origin on the real axis TRUE ANSWER : ? YOUR ANSWER : ?
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is 141 mA 200 mA 282 mA 100 mA 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 angle 180° Ω Z = 150 –90° Ω Z = 150 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 2.12 mS + j3.14 mS 3.14 mS + j2.12 mS 318.3 212 TRUE ANSWER : ? YOUR ANSWER : ?
A 2 k resistor is in series with a 0.015 F capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle? 734 and θ = –38.9° 707 and θ = –19.5° 73.4 and θ = –19.5° 2121 and θ = –19.5° TRUE ANSWER : ? YOUR ANSWER : ?
The complex number 40 angle 55° is equivalent to 45.88 + j65.52 55 + j55 22.94 + j32.76 40 + j40 TRUE ANSWER : ? YOUR ANSWER : ?
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit increases decreases does not change decreases to zero TRUE ANSWER : ? YOUR ANSWER : ?