2. Calculate the phase and line currents in the three-phase circuit given below, where Va = 202 40° V, Vb = 202 -120° V, and Vc = 202 < 120° V. a A Vc b Va 30 Ω J1002 C Vb 30 Ω j10Q www ell www C B wweee 30 Ω j10Q
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- Given the following phase currents: Ia= 3.5+j3.5; Ib=-j3; and Ic+-2.6+j1.5. Determine the negative sequence current for phase A. A. 0.313+j0.678 B. -0.313 -j0.678 C. -0.313+j0.678 D. 0.313-j0.678A balanced load is connected in star across a 3 phasec415V 50Hz supply. The load consists of a coil of resistance 25 ohms and inducrance 0.5 henry in paeallel with a purw resistance of 28 ohms and a pure capaciror of 60microfarads capacitance ,in each branch. Calculate a. The line currents? Need full working and answer has to be 9.3A Formola for inductance XL= 2×3.142FL FORMOLA FOR CAPACITOR XC= 1/2×3.142×FCThe phase b voltage and the phase b current of a balance three-phase system are V = 220 sin (wt + 210°) and I = 10 sin (wt-180°). * A. 5256.44 W B. 5514.38 W C. 5715.76 W D. 6049.22 W
- 5. The figure below shows two star connected loads with three phase power. The voltage source is 120Z0°. The loads are Z₁ = 10 + j4 № and Z₂ = 2 +j3 №. The cables are negligible. Calculate: a) the line and phase current. b) the real power from the source. c) the reactive power of the circuit. Is V N Z₁ Z₁ Z₁ Z₂ Z₂ N N Z₂In the circuit in the figure; L1 load draws 15 kVA with lagging power factor 0.6. The L2 load draws 6 kVA with a leading power factor of 0.8. According to this; What is the value of the complex power for the L2 load?Find out the zero-phase sequence components of the following set of three unbalanced voltage vectors: Va =10cis30° ,Vb= 30cis-60°, Vc=15cis145°" (THOS PROBLEM IS MULTIPLE CHOICE PLEASEE CHOOSE THE LETTER WITH THE CORRECT ANSWER AND PLEASE PROVIDE YOUR CLEAR SOLUTION! A 16.809cis-72.579° B 5.603cis72.579° C 16.809cis-47.421° D 5.603cis-47.421°
- Find out the zero-phase sequence components of the following set of three unbalanced voltage vectors: Va =10cis30° ,Vb= 30cis-60°, Vc=15cis145°" (THIS PROBLEM IS MULTIPLE CHOICE PLEASEE CHOOSE A LETTER BELOW AND PROVIDE YOUR CLEAR SOLUTION!) A 16.809cis-72.579° B 5.603cis72.579° C 16.809cis-47.421° D 5.603cis-47.421°From the given circuit, take V₁ = 240, Z₁ = 20 - j3 ohms. Find the phase currents and line ZL currents. Determine also the total complex power from the source. A IAB VL/120° V VL-120⁰ V V₁Z0° V ZL B Ic IBC ZL ZL ICA CA balanced load is connected in star across a 3 phasec415V 50Hz supply. The load consists of a coil of resistance 25 ohms and inducrance 0.5 henry in paeallel with a purw resistance of 28 ohms and a pure capaciror of 60microfarads capacitance ,in each branch. Calculate a. The line currents The answer has to be 9.3A
- From the given circuit, take V₁ = 240, Z₁ = 20-j3 ohms. Find the phase currents and line currents. Determine also the total complex power from the source. A LAB VL/120⁰ V V₁/0° V 15 L VL-120° V ZL B IBC ZL 21 W ICA CThe sequence component of phase a currents are: I ao = 0 A;I a1 = 10 + j5: I a2 =8 – j5. Determine current in phase c.For this kind a problem, how do you know how the voltage source is configured ( wye or delta). The problem start getting the phase current for phase 1 and 2 , but do we have to pretend that voltage source to delta load is connected like y-delta to convert the voltage to delta source? Or how does it work?