Your car is parked in Lot 80 for 30 days. Some electronics in the car continue to draw current, even when the car is turned off; this type of current draw is called parasitic current. If the battery voltage is 12 Volts and the parasitic current is 10 mA, how much energy has the battery released at the end of 30 days? A. 311.04 kJ B. 3.6 MJ C. 155.52 kJ D. 478.41 kJ E. 1.78 MJ F. None of the other answers is correct.
The charge, q(t), entering a circuit element is shown in the graph. Determine the current at t = 13.5 s. A. 2 A B. 0 A C. 4 A D. -2 A E. -6 A F. None of the other answers is correct.
Given that Req = 17 kΩ, determine the value of the resistor labeled R. A. 3 kΩ B. 25 kΩ C. 11 kΩ D. 15 kΩ E. 9 kΩ F. None of the other answers is correct.
Given that R = 7 kΩ, determine the value of the equivalent resistance, Req, to four significant figures. A. 2137 Ω B. 20.00 kΩ C. 1069 Ω D. 601.0 Ω E. 4747 Ω F. None of the other answers is correct.
Given that R = 8 kΩ, determine the value of the equivalent resistance, Req. A. 8 kΩ B. 4 kΩ C. 9 kΩ D. 12 kΩ E. 13 kΩ F. None of the other answers is correct.
Given that Vs = 40 V, use voltage division to determine the value of the voltage across the 2 kΩ resistor, VR. A. 6 V B. 32 V C. 20 V D. 24 V E. 8 V F. None of the other answers is correct.
Given that IS = 21 mA, use current division to determine the value of the current through the 6 kΩ resistor, IR. A. 10.5 mA B. 14 mA C. 3.5 mA D. 7 mA E. 12 mA F. None of the other answers is correct.
Given that I1 = -1 A , I2 = 4 A and I3 = 5 A, determine the power being supplied or dissipated by element A. A. 2 W, dissipated B. 20 W, supplied C. 6 W, dissipated D. 2 W supplied E. 0 W F. None of the other answers is correct.
Given that IC = -8 mA, use KCL to determine the value of IF. A. 9 mA B. 3 mA C. -19 mA D. -3 mA E. 19 mA F. None of the other answers is correct.
Given VF = 45V, use KVL to determine VE. A. 10 V B. -10 V C. 5 V D. 15 V E. 55 V F. None of the other answers is correct.
Given the voltage Vs = 16 V, determine the voltage VAB between the two points A and B labeled in the circuit. A. 12.8 V B. 11.2 V C. -11.2 V D. 4.8 V E. 8 V F. None of the other answers is correct.
Given Is = 9 mA, determine the power supplied or dissipated by the 30 V source. A. 21 mW, supplied B. 21 mW, dissipated C. 18 mW, supplied D. 9 mW, supplied E. 19 mW, dissipated F. None of the other answers is correct.
Given Is = 8 mA, use source transformations to simplify the circuit on the left into the form shown on the right. Determine V0 and R0 for the circuit on the right. A. V0 = 31.2 V, R0 = 2.4 kΩ B. V0 = 62 V, R0 = 10 kΩ C. V0 = 62 V, R0 = 2.4 kΩ D. V0 = 31.2 V, R0 = 10 kΩ E. V0 = 26.5 V, R0 = 5.2 kΩ F. None of the other answers is correct.
Given Vs = 42 V, use source transformations to simplify the circuit on the left into the form shown on the right. Determine I0 and R0 for the circuit on the right. A. I0 = 14 mA, R0 = 4 kΩ B. I0 = 14 mA, R0 = 2 kΩ C. I0 = 7 mA, R0 = 2 kΩ D. I0 = 7 mA, R0 = 4 kΩ E. I0 = 8 mA, R0 = 5 kΩ F. None of the other answers is correct.
Assume that Vs = -7 V. Determine the voltage, VR, across the 20 Ω resistor. A. 56 V B. -56 V C. -23 V D. -70 V E. 46 V F. None of the other answers is correct.
Assume that the CCVS multiplying constant is ρ = 600 V/A. Determine the current Ix. A. 9 mA B. 10 mA C. 40 mA D. -10 mA E. 20 mA F. None of the other answers is correct.
Assume that Vs = 21 V. Determine the range of voltages Vo that can be measured between the wiper and the negative terminal of Vs. A. 5.2 V ≤ Vo ≤ 15.4 V B. 5.2 V ≤ Vo ≤ 18 V C. 7 V ≤ Vo ≤ 18 V D. 7 V ≤ Vo ≤ 15.4 V E. 3.6 V ≤ Vo ≤ 19 V F. None of the other answers is correct.
Assume that the resistor R = 9 kΩ. Determine the range of resistance values for the equivalent resistance, Req. A. 5 kΩ ≤ Req ≤ 14 kΩ B. 3 kΩ ≤ Req ≤ 12 kΩ C. 3 kΩ ≤ Req ≤ 5 kΩ D. 12 kΩ ≤ Req ≤ 14 kΩ E. 9 kΩ ≤ Req ≤ 11 kΩ F. None of the other answers is correct.
A practical voltage source can be modeled with an ideal voltage source in series with an internal resistance. Assume that a practical source whose ideal voltage source is 19 V and whose internal resistance is 400 mΩ is connected to a load resistance of 9 Ω. Determine the power dissipated in the load resistor to 4 significant figures. A. 38.40 W B. 40.11 W C. 330.9 W D. 361.0 W E. 36.77 W F. None of the other answers is correct.
Assume that IA = 7 A. Determine the power supplied or dissipated by element E. A. 10 W dissipated B. 20 W, dissipated C. 70 W, supplied D. 20 W, supplied E. 35 W dissipated F. None of the other answers is correct.
Assume that Is = -3 mA. Use the node voltage method to find the voltage at the node labeled Vx. A. Vx = 12 V B. Vx = -12 V C. Vx = 4 V D. Vx = -4 V E. Vx = 6 V F. None of the other answers is correct.
Assume that Vs = 4 V. Use the mesh current method to find the current Ix. A. Ix = 0.5 mA B. Ix = 2 mA C. Ix = 3 mA D. Ix = 30 mA E. Ix = 0.25 mA F. None of the other answers is correct.
Assume that Rx = 2 Ω. Use the node voltage method to find the voltage V1 to 3 significant figures. A. V1. = 3.35 V B. V1. = 104 V C. V1. = 1.04 V D. V1. = 335 V E. V1. = 2.08 V F. None of the other answers is correct.
Assume that Vs = 6 V. Determine which set of equations represents the mesh equations for the circuit. A. -7 kΩ I1 + 3 kΩ I2 = 8 V and 3 kΩ I1 - 8 kΩ I2 = 6 V B. 7 kΩ I1 - 3 kΩ I2 = 8 V and 3 kΩ I1 - 8 kΩ I2 = 6 V C. 7 kΩ I1 - 3 kΩ I2 = 8 V and -3 kΩ I1 + 8 kΩ I2 = 6 V D. -7 kΩ I1 + 3 kΩ I2 = 8 V and -3 kΩ I1 + 8 kΩ I2 = 6 V E. 7 kΩ I1 - 3 kΩ I2 = 6 V and 3 kΩ I1 - 8 kΩ I2 = 8 V F. None of the other answers is correct.
Assume that Vs = 6 V and Is = 32 mA. Identify the equation for the supermesh in the circuit below. A. R1 I1 + R3 I2 + R4 I3 = 0 B. R1 I1 + R3 I2 = 6 V C. R2 I1 + (R2 + R3)I2 = 6 V D. (R1 + R2) I1 + (R3 - R2) I2 + R4 I3 = 6 V E. (R1 + R2) I1 - R2 I2 + R4 I3 = 6 V F. None of the other answers is correct
Assume that Vs = 2 V and Is = 6 mA. Identify the equation for the supernode in the circuit below. A. -V1 + 3 V2 + 3 V3 = 36 V B. -V1 + 6 V3 = 11 V C. V1 - 6 V3 = 8 V D. V1 - 6 V3 = 12 V E. V2 - V3 = 2 V F. None of the other answers is correct.
Assume that I1 = 5 A, I2 = 6 A, and I3 = 3 A. Determine the power supplied or dissipated by the 9 V source. A. 0 W, supplied B. 27 W, supplied C. 27 W, dissipated D. 126 W, supplied E. 54 W, supplied F. None of the other answers is correct.
Assume that Is = 6 mA. Determine the mesh currents I1 and I2. A. I1 = 6.2 mA, I2 = 6 mA B. I1 = 1.2 mA, I2 = -6 ma C. I1 = -1 mA, I2 = -6 mA D. I1 = -6 mA, I2 = -1 mA E. I1 = -3 mA, I2 = -5 mA F. None of the other answers is correct.
Assume that Is = 6 mA. Determine the node voltages V1 and V2. A. V1 = 21 V, V2 = -4 V B. V1 = -4 V, V2 = 29 V C. V1 = 17 V, V2 = 3 V D. V1 = 29 V, V2 = 16 V E. V1 = 29V, V2 = -4 V F. None of the other answers is correct.
Assume that R3 = 2.5 kΩ and that the op amp is ideal and operating in its linear region. Solve for the gain of the circuit, Vout/Vin A. -40 V/V B. 51.0 V/V C. 40.0 V/V D. 40.8 V/V E. 28.4 V/V F. None of the other answers is correct.
Assume that R2 = 24 kΩ and that the op amp is ideal and operating in its linear region. Determine the voltage Vo. to four significant figures of precision. A. 801.4mV B. 714.5 mV C. -746.3 mV D. -535.1 mV E. -654.5 mV F. None of the other answers is correct.
Assume that R1 = 2.2 kΩ and that the op amp is ideal and operating in its linear region. Determine the voltage Vo to three significant figures of precision. A. Vo = -695 mV B. Vo = 655 mV C. Vo = -655 mV D. Vo = 695 mV E. Vo = 409 mV F. None of the other answers is correct.
Assume that Vs = 11 mV and that the op amp is ideal and operating in its linear region. Determine the voltage Vo to three significant figures of precision. A. Vo = 1420 mV B. Vo = 512 mV C. Vo = 544 mV D. Vo = -544 mV E. Vo = -343 mV F. None of the other answers is correct.
Assume that Vs = 20 mV and that the op amp is ideal and operating in its linear region. Determine the voltage Vo to two significant figures of precision. A. Vo = 3.2 V B. Vo = 4.8 V C. Vo = -4.8 V D. Vo = -3.2V E. Vo = 6.5 V F. None of the other answers is correct.
Assume that R = 110 Ω and that the op amp is ideal and operating in its linear region. Determine the output voltage Vout to three significant figures of precision. A. Vout = -1.15 V B. Vout = 1.15 V C. Vout = 4.62 V D. Vout = 2.31 V E. Vout = -1.21 V F. None of the other answers is correct.
Assume that Vs = 723 mV and that the op amp is ideal and operating in its linear region. Determine the power supplied or dissipated by the op amp to three significant figures of precision. A. 45.4 mW, supplied B. 22.7 mW, dissipated C. 22.7 mW, supplied D. 16.6 mW, dissipated E. 16.6 mW, supplied F. None of the other answers is correct.
Assume that the output voltage Vo = 8 V and that the op amp is ideal and operating in its linear region. Determine the value of Vs. A. Vs = -1 V B. Vs = -7 V C. Vs = 7 V D. Vs = -12 V E. Vs = 6 V F. None of the other answers is correct.
Assume that the op amp is ideal and operating in its linear region. Select the combination of resistor values that gives the cascaded op-amps an overall gain of Vo/Vs = -2500 V/V. A. R1 = 15 kΩ, R2 = 300 Ω, R3 = 1 kΩ, R4 = 50 kΩ B. R1 = 300 Ω, R2 = 15 kΩ, R3 = 1 kΩ, R4 = 50 kΩ C. R1 = 300 Ω, R2 = 15 kΩ, R3 = 1 kΩ, R4 = 49 kΩ D. R1 = 300 Ω, R2 = 15 kΩ, R3 = 49 kΩ, R4 = 1 kΩ E. R1 = 600 Ω, R2 = 30 kΩ, R3 = 500 Ω, R4 = 24 kΩ F. None of the other answers is correct.
Assume that the op-amp is ideal and that R2 = 12 kΩ. Determine the voltage at the inverting terminal, V- to three significant figures. A. V- = 1.33 V B. V- = 0 V C. V- = 2.20 V D. V- = 10.2 V E. V- = 0.923 V F. None of the other answers is correct.
Assume the op-amp is ideal and R1 = 3 kΩ. Determine the range of values for the input voltage Vs in which the op-amp does not saturate. A. -311 mV ≤ Vs ≤ 0 V B. -121 mV ≤ Vs ≤ 121 mV C. 0 V ≤ Vs ≤ 121 mV D. -121 mV ≤ Vs ≤ 0 V E. -311 mV ≤ Vs ≤ 311 mV F. None of the other answers is correct.
Let R1 = 2 kΩ. Determine the output voltage Vout as a linear combination of the sources I1 and V2. A. 2/5(2 kΩI1 + V2) B. 2/5(I1 + V2/2 kΩ) C. 3/5(2 kΩI1 + V2) D. 3/5(I1 + V2/3 kΩ) E. 5/6(2 kΩI1 + V2) F. None of the other answers is correct.
Assume that R2 = 9 kΩ. Determine Iout due only to the current source I1 and the voltage source V2. A. Due to I1, Iout = 22.5 mA and due to V2, Iout = -1.5 mA B. Due to I1, Iout = 1.5 mA and due to V2, Iout = 22.5 mA C. Due to I1, Iout = 5 mA and due to V2, Iout = 16 mA D. Due to I1, Iout = 25.5 mA and due to V2, Iout = 1.5 mA E. Due to I1, Iout = 16 mA and due to V2, Iout = 5 mA F. None of the other answers is correct.
Assume that R1 = 14 kΩ. Determine the Thevenin resistance RTh as seen by the load resistor RLoad. A. 1.5 kΩ B. 6 kΩ C. 1.35 kΩ D. 4.2 kΩ E. 14 kΩ F. None of the other answers is correct.
Assume that I1 = 8 mA. Determine the short circuit current Isc, produced when the load resistor, RLoad, is replaced by a short. Hint: Use superposition to determine Isc for each source individually and sum the results. A. 0 mA B. 10 mA C. -10 mA D. -6 mA E. 6 mA F. None of the other answers is correct.
Assume that R1 = 10 kΩ and that RLoad is chosen to allow maximum power transfer to the load. Determine the power dissipated by the load resistor, RLoad. A. 12 mW B. 24 mW C. 6 mW D. 72 mW E. 14.4 mW F. None of the other answers is correct.
In the V- I curve for the Linear Circuit, assume that VTh = 75 V. Determine the parameters for the Norton Equivalent model, Isc and RTh. A. Isc = 3 A, RTh = 12 Ω B. Isc = 75 A, RTh = 25 Ω C. Isc = 3 A, RTh = 25 Ω D. Isc = 1 A, RTh = 50 Ω E. Isc = 4 A, RTh = 25 Ω F. None of the other answers is correct.
Assume that Ceq is 58 µF. Determine the value of C1. A. 95 µF B. 46.4µF C. 21 µF D. 37 µF E. 31 µF F. None of the other answers is correct.
The current through an inductor is given by the equation iL(t) = 80e -20t mA, t ≥ 0.Determine the time t0 to three significant figures of precision such that iL(t0) = 60 mA. A. 144 ms B. 288 ms C. 5.75 s D. 14.4 ms E. 3.8 ms F. None of the other answers is correct.
Assume that the circuit’s time constant τ = 12 ms. Determine the value of the capacitor C. A. 5 µF B. 1.66 µF C. 12 µF D. 8 µF E. 6 µF F. None of the other answers is correct.
At time t = 2 s, assume the voltage on the capacitor is vc(2) = 5 V. Determine the capacitor voltage at 8 s. A. 30 V B. 36 V C. 48 V D. 41 V E. 46 V F. None of the other answers is correct.
Assume that Vs = 29 V and that the circuit has been energized for a long time. Determine the energy stored in the circuit to three significant figures of precision. A. 26.6mJ B. 8.65 mJ C. 9.25 mJ D. 27.2 mJ E. 17.9 mJ F. None of the other answers is correct.
Assume that Is = 11 mA. The switch in the circuit has been closed for a long time and opens at time t = 0. Determine the capacitor voltage vc(0+ ). A. 18 V B. -22 V C. 33 V D. -33 V E. 22 V F. None of the other answers is correct.
The voltage across a discharging capacitor is given by: vc(t) = 1.2e -400t MV, t ≥ 0. Assume that the capacitor is safe to handle when the voltage has discharged to 24 V. Determine how many time constants is required for the capacitor to be safe to handle. A. 27 B. 4320 C. 10.8 D. 4.32 E. 5 F. None of the other answers is correct.
Assume that R = 3.9 kΩ. The switch has been open for a long time and closes at t = 0. Determine the expression for the capacitor voltage vc(t) for t ≥ 0. A. 12.0(1 - e -25.6t ) V B. 12.0e -25.6t V C. 12.0(1 - e -16.9t ) V D. 7.93(1 - e -16.9t ) V E. 7.93e -16.9t V F. None of the other answers is correct.
Assume that R = 11 kΩ. The switch has been open for a long time and closes at t = 0. Determine the expression for the capacitor voltage vc(t) for t ≥ 0. A. 24(1 - e -100) V B. 24(1 - e -109t ) V C. 2(1 - e -100t ) V D. 2(1 - e -109t ) V E. 24e -100t V F. None of the other answers is correct.
Assume that R = 600 Ω. The switch in the circuit has been closed for a long time and it opens at t = 0. Determine the expression for i(t) for t ≥ 0. A. 20e -500,000t mA B. -20e -187,500t mA C. 7.5e -187,500t mA D. 20(1 - e -187,500t ) mA E. -20e -500,000t mA F. None of the other answers is correct.
Let A = 16e jπ/4. Determine the value of A in rectangular form. A. 11.3 + j 11.3 B. 8 + j 8 C. 8 – j 8 D. 22.6 – j 22.6 E. 3 + j 5 F. None of the other answers is correct.
Given A = 7 + j8 and B = 4 - j6. Determine the value of C = A/B in polar form. A. 1.47∠ - 7.5° B. 1.47∠105° C. 7.67∠ - 7.5° D. 0.678∠ - 105° E. 14.3∠77.9° F. None of the other answers is correct.
Given A = 6∠30° and B = 5∠ - 120° . Determine the value of C = AB in rectangular form. A. – 30 B. –j 30 C. 26 + j 15 D. -1.03 + j 0.6 E. -0.721 + j0.417 F. None of the other answers is correct.
Given that v(t) = 165 sin(377t + 50°). Determine Ṽ, the phasor representation of the voltage v(t). A. 165∠ - 40° B. 165∠50° C. 165∠130° D. 377∠ - 40° E. 377∠50° F. None of the other answers is correct.
Let R1 = 60 Ω. Determine Zeq, the equivalent impedance of the circuit. A. (0.98 + j2.66) kΩ B. (19 + j395) Ω C. (19 - j395) Ω D. (1.04 + j2.66) kΩ E. (2.09 + j1.68) kΩ F. None of the other answers is correct.
Assume the impedance of a circuit element is Z = (3 + j4) Ω. Determine the circuit element’s conductance and susceptance. A. G = 120 mS, B = j160 mS B. G = 333 mS, B = j250 mS C. G = 108 mS, B = -j194 mS D. G = 160 mS, B = j108 mS E. G = 120 mS, B = -j160 mS F. None of the other answers is correct.
Assume that ω = 1200 rad/sec. Determine the equivalent impedance of the circuit. A. Zeq = (39.3 + j16.0) Ω B. Zeq = (12.3 + j21.8) Ω C. Zeq = (39.3 – j16.0) Ω D. Zeq = (44.4 – j11.3) Ω E. Zeq = (13.2 + j 47.1) Ω F. None of the other answers is correct.
A circuit is composed of a conductance in parallel with a susceptance. Given that Y = (2 + j4) mS and ω = 1100 rad/sec, determine the value of the capacitor or inductor in the circuit. A. 3.64 µF capacitor B. 227 µH inductor C. 6.21 µF capacitor D. 12.4 µF capacitor E. 143 µH inductor F. None of the other answers is correct.
Assume that Vs = 24 ∠40°. Determine the value of Ix. A. 9.22 ∠-10.2° mA B. 46.1 ∠90.2° mA C. 14.7 ∠-6.42° mA D. 9.22 ∠90.2° mA E. 6.04 ∠85.6° mA F. None of the other answers is correct.
Assume that Vs = 15 ∠50°. Determine the value of Vx. A. 3.56 ∠153° V B. 1.78 ∠-52.6° V C. 6.04 ∠61.4° V D. 3.13 ∠114° V E. 3.56 ∠-52.6° V F. None of the other answers is correct.
Assume that R1 = 6 kΩ. Determine the Thevenin voltage and impedance for the equivalent circuit shown. A. VTh = 45 ∠-30° V, ZTh = (6 - j3) kΩ B. VTh = 45 ∠150° V, ZTh = (6 + j3) kΩ C. VTh = 90 ∠60° V, ZTh = (6 + j3) kΩ D. VTh = 30 ∠120° V, ZTh = (3 + j5) kΩ E. VTh = 30 ∠45° V, ZTh = (3 – j5) kΩ F. None of the other answers is correct.
Assume that R1 = 3 Ω. The current is(t) shown below is a periodic waveform with a period of 3 seconds. Determine the peak power, Ppeak, and average power, Pavg, delivered to the resistor R1. A. Ppeak = 75 W, Pavg = 25 W B. Ppeak = 75 W, Pavg = 8.33 W C. Ppeak = 100 W, Pavg = 50 W D. Ppeak = 60 W, Pavg = 20 W E. Ppeak = 60 W, Pavg = 35 W F. None of the other answers is correct.
Assume that R1 = 4 kΩ. Determine the value of ZL required to maximize the power delivered to the load impedance. A. (5.92 + j 1.44) kΩ B. (1.92 - j 1.44) kΩ C. (6.45 - j 2.13) kΩ D. (5.92 - j 1.44) kΩ E. (6.45 + j 3.65) kΩ F. None of the other answers is correct.
Assume that Vs = 12 ∠27° Vrms. Determine average power supplied by Vs. A. 21.18 mW B. 24.70 mW C. 12.71 mW D. 6.043 mW E. 55.13 mW F. None of the other answers is correct.
A load with an apparent power of 100 MVA, is connected to a 60 Hz voltage source, VL = 55 kV. Assume that the load has a power factor of 0.71 lagging. Determine the value of the capacitor needed to correct the power factor to unity. A. 61.75 µF B. 53.13 µF C. 64.27 µF D. 67.45 µF E. 58.33 µF F. None of the other answers is correct.
Assume that Z1 = 20 Ω. Determine the value of the neutral current, In. A. 5 A B. -1.5 A C. 7.5 A D. 1.5 A E. -5 A F. None of the other answers is correct.
Assume that Z1 = 3 Ω. The loads shown below represent the daily average loads found in a particular residential home. Determine the amount of energy used by the home over the course of 30 days. A. 215.0 kW-hr B. 6.451 MW-hr C. 747.6 kW-hr D. 12.65 MW-hr E. 21.44 MW-hr F. None of the other answers is correct.
The National Electric code requires the loads connected to a circuit breaker should not exceed 75% of the maximum current for continuous operation. The circuit diagram shows n identical loads protected by a 20 amp circuit breaker. If each load is 83 W, determine the maximum value for n. A. 29 B. 22 C. 10 D. 28 E. 21 F. None of the other answers is correct.
Which of the following statements violates basic AC electricity safety guidelines. A. Working on energized electrical systems is fine. B. Assume that an electrical system is energized until you verify that it is not. C. Never work on potentially hazardous systems alone. D. Any electrical work done must be in compliance with local codes. E. When handling long metallic equipment such as ladders, be continuously aware of overhead power lines. F. None of the answers violates safety guidelines.
Assume that Vs = 24 ∠0° Vrms. Determine the value for I1. A. 34.66 ∠36.87° Arms B. 34.66 ∠-36.87° Arms C. 88.24 ∠53.13° Arms D. 751.1 ∠36.87° Arms E. 563.7 ∠-81.41° Arms F. None of the other answers is correct
Assume that Z1 = (9 +j 27) Ω. Determine the equivalent resistance present at the terminals. A. (36.75 – j 15.31) Ω B. (36.75 +j 15.31) Ω C. (45.75 – j 42.31) Ω D. (45.75 + j11.69) Ω E. (52.97 + j 10.53) Ω F. None of the other answers is correct.
Which of the following statements is not true for a balanced 3 phase voltage source? A. Phase “a” voltage is taken as the reference; ∠Van = 0°. B. The positive phase sequence is “abc”. C. The sum of the three phase voltages is zero. D. Only one phase needs to be analyzed due to symmetry. E. All three phase voltages are equal in magnitude and offset by 90° in phase. F. All the statements are true.
One phase of a balanced three phase circuit is shown in the figure below. Assume that Van = 27 ∠0° kVrms. Determine the total power delivered to the three phase load impedance. A. 229.7 MW B. 51.04 MW C. 235.3 MW D. 78.43 MW E. 76.55 MW F. None of the other answers is correct.
A balanced three phase transmission line is shown connecting a balanced three phase source to a balanced three phase load. At the load, the line voltage is Vab = 69 ∠30° kV. Assume the apparent power of the balanced three phase load is S = (300 + j75) MVA. Determine the current IaA. A. 862.5 ∠-14.04° A B. 2588∠14.04° A C. 1494∠-14.04° A D. 2588 ∠-14.04° A E. 1494∠14.04° A F. None of the other answers is correct.
The charge entering a circuit element in the direction of the arrow is shown in the above plot. Determine the current i flowing into the circuit element at t = 4 seconds. A. 1 A B. -1 A C. 0 A D. -2 A E. 2 A
The energy absorbed by a circuit is shown in the above plot. Find the time or times at which the instantaneous power absorbed is zero. A. 2.5 s B. 3 s and 5 s C. 2 s and 4 s D. 5 s E. 3.5 s
Which of the following statements is correct? A. Element A is supplying power; element B is absorbing power B. Elements A and B are both supplying power C. Element A is absorbing power; element B is supplying power D. None of the statements are correct E. Elements A and B are both absorbing power
Find the total power supplied from the voltage source. A. 60 W B. 20 W C. 75 W D. 40 W E. 1.67 W
Determine the current IG in the above figure. A. 4 mA B. 3 mA C. 7 mA D. 8 mA E. 2 mA
Determine the voltage Vc in the above figure. A. 75 V B. 15 V C. 45 V D. 105 V E. 10 V
Find the value of IX in the circuit shown above. A. 10 A B. 20 A C. 2 A D. 16 A E. 5 A
Solve for the voltage Vab in the circuit shown above. A. 6.67 V B. 4 V C. 12 V D. 20 V E. 8 V
Find the equivalent resistance seen by the 4 A current source. A. 0 Ω B. 2 Ω C. 1.2 Ω D. ∞ Ω E. 5 Ω
Determine the value for resistor R so that half of the current being supplied by the source flows through that resistor. A. 175 Ω B. 60 Ω C. 150 Ω D. 50 Ω E. 75 Ω
If the current Ix is 8 A, determine the value of the current Is. A. 12 A B. 4 A C. 16 A D. 8 A E. 20 A
Solve for value Vo in the network shown above. A. 7 V B. 21 V C. -7 V D. 3 V E. −21 V
Use source transformations to simplify the circuit to the left of load resistor R to a single current source, Ieq, in parallel with an equivalent resistance. What is the value of Ieq? A. 0.125 A B. 0.75 A C. 0.5 A D. 1.5 A E. 0.25 A
Use source transformations to simplify the circuit in Fig. 1 to the left of load resistor R to a single current source in parallel with a single resistance, Req as shown in Fig. 2. What is the value of Req? A. 2 Ω B. 3 Ω C. 4 Ω D. 6 Ω E. 12 Ω
A practical voltage source consists of an ideal voltage source of value 25 V in series with an internal resistance of 0.25 Ω. A load with resistance of 5 Ω is connected to this source. Determine the measured voltage across the load. A. 23.48 V B. 23.24 V C. 23.81 V D. 24.75 V E. 24.45 V