Given the load absorbeed power fill in the blank
Load1 : (3.75- j3.31) kVA
Load2: (3.82+j2.57)kVA
Load3: (6.16+j6.83)kVA
Load4: (8.5+j0)kVA
Load 5:(1.8-j0.6)kVA
Load | S | Theta s | pf | lead/lag | beta |
1 | |||||
2 | |||||
3 | |||||
4 | |||||
5 |
Given the load absorbeed power fill in the blank Load1 : (3.75- j3.31) kVA Load2: (3.82+j2.57)kVA...
5.3. Given a 600 kVA 12.47 kV 0.85 pf lagging three-phase load: a. Compute the corresponding complex power. b. Compute the corresponding wye and delta complex impedances Answers: a) S3p - (510 j316.1)kVA,S10 (170 +j105.4)kVA b) Zy (220.3+1 36.5), (660.9j409.5)2
2. Two alternators A and B are operating in parallel to supply power to a load 1000 kVA at 0.8 pf laggine alternator A contributes 500 KVA at 0.6 of ageing calculate the real power and power factor of & iS points) 3. A 440 V, 4-pole, 60 Ht, 3-phase wye-connected induction motor runs at 1700 rpm during the normal operation. The motor has the following data; (20 polets X, 1.2 ohms 0.89 ohms X -0.56 ohms Ra 025 ohmg...
Example 9 Three loads are connected in parallel across 1400 V, 60 Hz supply: Load 1: 125 KVA, 0.28 PF lag Load 2: 10 kW, 40 kVAR capacitive load Load 3: 15 kW Find the total kW, kVAR, KVA, and the supply power factor . The KVAR and the capacitance in mF of the capacitor needed to improve the PF to 0.8 lagging
A balanced 3-0 source serves the following loads: Load 1: 18 kVA at 0.8 PF lagging Load 2: 10 KVA at 0.7 PF leading Load 3: 12 kW at unity PF Load 4: 16 kVA at 0.6 PF lagging The line voltage across the terminals of the load is 208 Vrms and the line impedance is 0.2 +j0.4/0. Find the line voltage and PF at the source. (3 pt) Real part of the line voltage at the source: (3 pt)...
1.6 load not in a three phase system) is rated at 50 KVA with a power factor of 0.8 lagging. A what is the power factor angle? 1.7. For a balanced three phase system, if the wye connected load has impedance 50+20j, determine the total (a single load, complex power of the load if 120225° V rms (ignore the line impedance). 1.8 An ideal transformer has a tuns ratio (N2/NI) of 6, if the magnitude of the primary port (port...
4. Figure shows a power source that feeds a 100 kVA 14/2.4 kV transformer through a feeder with impedance of 100/60° Ω Load 90 kw 0.85 PF lagging Feeder transmission line) Source Transformer Load The transformer has been tested to determine its equivalent circuit. The results of the tests are: Open-circuit test Voc = 14 kV oc 0.1 A Рос-800 w Short-circuit test Vsc 800 V Isc = 7A Psc 2 kW The load on the transformer is 90 kW...
PLEASE SOLVE THIS POWER / LOAD FLOW
07-Elec-B December 2016 Page 7 of 7 Problem 7 Consider the system shown in the single-line diagram of Figure (5). Here, a 60-Hz synchronous generator having a transient reactance of 0.15 pu. is connected to an infinite bus through a transformer whose reactance is 0.1 p. u. and a double circuit transmission line with circuits having a reactance of 0.6 p.u each as indicated in the figurc. The generator delivers a real power...
4) Calculate load voltage, phase, load current, phase and load power for the tables below. (fill the tables for figure4 circuit) For table 1, use calculated maximum power CL and for table2 use calculated maximum power RL VoadPhaseVload lload (mA) RL PL (mW) 100Ω 3900 560Ω 8200 1000Ω 12000 1800Ω 3300Ω 1 0000Ω Table 1: Load Power with respect to RL (use maximum power CL for this table) LoadPower PL (mW) CL Vload (V)PhaseVload() Iload (mA) Phaselload() 1 nF 3.3...
Problem 2: A 10 KVA 2200/220 V, 50 Hz transformer core and full load copper losses are given as PCore = 153 W, PCu = 224 W. a) Find the maximum efficiency b) Determine the all-day efficiency under following load pattern: 1. 2 hrs at 5/4 load 2. 6 hrs at full load 3. 8 hrs at 2 load 4. 4 hrs at 4 load 5. 4 hrs at no load
10. Given that the total instantaneous power for a Y load = 3VmIm*cos(theta)=P then P=sqrt(3)VllIl *Cos(Theta) find Q,S,S* Show that P,Q,S* is same for y and delta loads. P Q and S are Active power, Reactive Power, and Apparent Power respectively. please tell me what these powers are telling us (addendum- what do they say about the circuit, load, and why are these powers there (necessary)). What information do these convey Avg Power, Ptotal, Q, S,S*. Choose a value for...