Q1. Design a three-phase balanced power system where the load is connected with the power supply...
Problem 7 Three three-phase wye-connected loads are in parallel across a three-phase supply. The first load draws a current of 10 A at pf- 0.93 (leading), and the second and third loads (each) draw a current of 20 A at pf= 0.85 (lagging). Suppose the line-to-line voltage is 240 V. Compute the following: a) The transmission line current b) The load power factor c) The complex power supplied by the source Problem 7 Three three-phase wye-connected loads are in parallel...
2. Two balanced three-phase loads are connected in parallel. One load with per phase impedance 21 ?, is connected in delta, and the other load has per phase impedance 15 2 and is connected in wye. Ignore the line impedance. If the line voltage is a 208230° Vrms, determine (a) the phase voltage for phase-a, ) the line current Ia*, (c) the phase currents in the delta load (d) the complex power of the load and the power factor.
(4b) Two parallel three-phase loads are connected to a three-phase A connected source through a line. The line voltage VAB at the two loads is 200 230° V. One load is configured in Y and absorbs three-phase real power 40KW with a 0.9 leading power factor, and the other load s configured in A with ZA = 12+j150 per phase. Please calculate (a) The line currents (11pts) (b) The power factor at the combined load (3pts) (c) The phase currents...
A Δ-connected source supplies power to a Y-connected load in a three-phase balanced system. Given that the line impedance is (1 + j1) Ω per phase while the load impedance is (6 + j4) Ω per phase, find the magnitude of the line voltage at the load. Assume the source phase voltage Vab= 208 ∠0° V rms. The magnitude of the line voltage at the load is _______ Vrms.
Three balanced three-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of 400+j300 2/0; load 2 is A-connected with an impedance of 2400-j18000/0; and load 3 is 172.8+j2203.2 kVA. The loads are fed from a distribution line with an impedance of 2+j16 0/0. The magnitude of the line-to-neutral voltage at the load end of the line is 2413 kV. Calculate the total complex power at the sending end of the line. :) Magnitude of the total...
Two balanced loads are connected to three phase supply via a feeder lines as shown below. The STAR load has a line voltage of 440 V, at 50 Hz. (Take 440/30% V as reference) F2 F2 F1 0.025 J0.142 B 0.0110 JO.05Ω Three Phase 65 kW Vi2 Load 2 Load 1 L1 DELTA PF = 0.72 440 30°V STAR Line Voltage LineVoltage | |Д|lagging Line Voltage STAR CONECTED Zo 2.80 + 13.270/Phase Determine: (i) The Line Current ; (ii) The...
Please quickly .I will grade 2. Three balanced three-phase loads are connected in parallel. Load 1 is Y- connected with an impedance of 400 + 13001/0 load 2 is A-connected with an impedance of 2400 - 218000/0; and load 3 is 172.8 + j2203.2 kVA. The loads are fed from a distribution line with an impedance of 2 + j1612/0. The magnitude of the line-to-neutral voltage at the load end of the line is 24V3 kv. a) Calculate the total...
2.11. A 4157-V rms, three-phase supply is applied to a balanced Y-connected three-phase load consisting of three identical impedances of 48236.87°2. Taking the phase to neutral voltage Van as reference, calculate (a) The phasor currents in each line. (b) The total active and reactive power supplied to the load.
A balanced three-phase delta-connected load is connected to a balanced three-phase delta-connected source via a transmission line. The line-line voltage for the source is 100∟0° V/phase and the impedance of load is (27 + j18) Ω/phase. The transmission line has an impedance of (1 + j4) Ω/line. a) Draw the complete schematic of the power system showing the location of wattmeters. (Two-Wattmeter system is considered for this problem). Phase “a” could be considered as a reference phase. b) What must...
The following three-phase, balanced loads are connected across a three-phase, Y-connected 60 Hz source with a line-to-line voltage of 480 V. The loads are described below: • Load 1: ∆-connected, total three-phase apparent power is 30 kVA at 0.95 power factor lagging. • Load 2: ∆-connected, total three-phase active power is 20 kW at 0.7 power factor lagging. • Load 3: Y-connected, phase current is 30 A, and power factor is 0.9 pf leading. (a) Calculate the total complex power...