The current in a load impedance of Z = 15215° Q is I = 2440° A. Calculate the voltage drop over the load resistor in V? %3D Your Answer:
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- Assume that the voltage applied to a load is V = 2082-30° V and the current flow- ing through the load is I = 5Z15° A. (a) Calculate the complex power S consumed by this load. (b) Is this load inductive or capacitive?Between the terminals a and b in the figure, there is a load formed by connecting the resistor R0 and inductance L0 in series. The amplitude of the voltage Vs (t) is √2 150 volt phase angle Qs = 0 degree period T = 200π microseconds. Since R = 300ohm and C = 1 microfarad A) If the load phase angle QL = 30 degrees, find the values of R0 and L0 that enable the load to draw the maximum average power from the circuit. =? B) Calculate the average power on the load. =?As shown in the figure, two metal plates are connected to a voltage Source the seperation astence between the plater is much smaller then Hhe s0 of Hhe plates ond He space between the plates Is tfill ed with a Uniform charge denity p -) Aind the potntial VIx) in between the plater. ) Fnd the ele ctric freld Ex Cx) in between the plater -) find the surface chorge denritres on the mne surpa ed af ept crd indt metal elaes
- An AC voltage source delivers current to Load A and Load B which are connected in parallel. Current in Load A is 25 A and Current in Load B is 42.2. If the current in load B leads the current in load A by 45 degrees, calculate: a) Resultant or total current, b) Angle between the resultant current and Load current A if Load Current A is at reference or zero degrees.-write legibly-show the complete solution53. A series resistance-capacitance (R-C) circuit is connected to 230-volt, 50 cycle AC source. The current through the resistor is 45.45 A and the power taken by the circuit is 5,000 watts. Compute the apparent power. a. 4,399.4874 b. 8,063.3393 c. 9,180.6139 d. 19,196.9845Q2) Non – sinusoidal voltage applied on 102 resistance with consumed power 521.25 watts and the current is i(t) =10sinwt+I3 sin3wt+0.5 sin5wt Amp. Find the Iz and the voltage effective value.
- The circuit of the Figure below has Z1= 5 angle 0 , Z2= 9 angle 30 and Z3= 10 angle 80, and is supplied by a 3-phase 450-V solve for IaThe answer must be 110.29 angle -36.52Task 3 A three phase, four wire star connected load consisting of: ZR: a resistor of 9500 in series with a 3H inductor ZB: a resistor of 1950 ZY: a resistor of 1950 in series with a 4µF capacitor Using the equipment available in the power lab (Room T017), connect the given load to a three-phase supply available in the lab and: 3.1. Determine the current of each line and the neutral current and measure the total power supplied by the source. 3.2. Analytically, calculate all currents and the total power and compare with those obtained in measurements. 3.3. Device a method and measure the waveform of the neutral current. Discuss the obtained waveform and the reason for any distortion in the waveform 3.4. Validate your calculations using computer simulationAC Circuits Current, Voltage, Power, Power Factor and Phasor Diagrams. Consider the circuit shown in Figure 3. (i) Find the total impedance ZT as seen by the voltage source. (ii) Find the total current IT supplied by the source. (iii) Sketch phasor diagram of Vs and IT and State whether IT leads or lags Vs (iv) Determine the power factor angle for the circuit. 9. L R1 1002 0.213H IT Vs R3 1502 C 12020°V 22µF 60HZ R2 50Ω Figure 3 Answers |(1) Zr = (ii) IT= (iii)
- 3) Given the circuit with an AC sinusoidal current source and an AC sinusoidal voltage source: ZR1 $60k0 <0 deg V₁" I₂" IR1 V1- Zc 85 kohms <-90 deg Ic VR2™ VL™ VIC ZR1 = 60 k < 0 degrees Zc = 85 k0 <-90 degrees ZR2 = 20 kn 0 degrees Z₁ = 50 kn < 90 degrees www ZR2 20k0 <0 deg Isa 1.2 mA <0 deg 12- + Esb All sinusoidal complex phasor currents and voltages are peak phasors. Isa 1.2 mA <0 degrees represents a current source peak phasor Esb = 80 V < -150 degrees represents a voltage source peak phasor The current source and voltage source have angular velocity w 2000 rad/s At the previously stated angular velocity, the schematic shows the element complex impedances as follows: ZL 50 kohms < 90 deg 80 V<-150 deg Use the Superposition theorem and circuit analysis to find all of the circuit peak complex phasor voltages and currents requested below:Problem 2-9 Balanced Capacitor Circuits in Expressed in a Rotating Ref- erence Frame Three balanced (equal) capacitors are wye connected across a three phase line. Determine the equations and coresponding equivalent circuit expressing the circuit behavior of these capacitors in a freely rotating d.q reference frame. 1a(in) b(in) - a(out) -'blout) → dout)Convert the following instantaneous currents to phasors, using cos(t) as the reference. Give your answers in both rectangular and polar form. (a) i(t)=5002cos(t30) (b) i(t)=4sin(t+30) (c) i(t)=5cos(t15)+42sin(t+30)