25. A delta - connected load whose phase impedances are ZAB= 50 02, ZBC = -j50 02, and ZCA =j50 is fed by a balance wye - connected three phase source with Vp-100 V. Find the phase currents.
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- Consider a single-phase load with an applied voltage v(t)=150cos(t+10)volts and load current i(t)=5cos(t+50)A. (a) Determine the power triangle. (b) Find the power factor and specify whether it is lagging or leading. (c) Calculate the reactive power supplied by capacitors in parallel with the load that correct the power factor to 0.9 lagging.Two impedances are connected in parallel to the supply, the first takes a current of 40 A at a lagging phase angle of 30°, and the second a current of 30 A at a leading phase angle of 45°. Draw a phasor diagram to scale to represent the supply voltage and these currents. From this diagram, by construction, determine the total current taken from the supply and its phase angle.Two impedances are connected in parallel to the supply; the first takes a current of40A at a lagging phase angle of 300, and the second a current of 30A at a leadingphase angle of 450. Draw a phasor diagram to scale to represent the supply voltageand these currents. By calculation, determine the total current taken from the supplyand its phase angle. All currents are expressed in their r.m.s. values
- A 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 currentsExample: A balanced positive-sequence wye-connected 60 Hz three-phase source has line-to- line voltages of V,=1000 V. This source is connected to a balanced wye-connected load. Each phase of the load consists of a 0.2 H inductance in series with a 100 0 resistance. Find the line-to-neutral voltages, the line currents, the power, and the reactive power delivered to the load. Assume that the phase of Van is zero.In general, a three-phase induction motor isdesigned for wye connection operation. However, forshort-time operation, a delta connection can be used atthe nominal wye voltage. Find the ratio between thepower delivered to the same motor in the wye anddelta connections.
- Need asap pls help. Solve for the voltages across and currents through each component. Show the complete solution and explain. The total power should be zero..)Two complex loads Z1 and Z2 are connected in parallel and powered by a value voltage effective 7.2 kV and frequency 60 Hz. The first load has a power of 50 kVA and a factor of rear power of 0.9. The second charge has a power of 45 kW and a rear power factorof 0.91. Determine in steady state the kVAR power and the capacity required to correct the Total power factor to a value of 0.97 rear.Each phase of a wye-connected load consists of a 50-Ω resistance in parallel with a 100-μF capacitance. Find the impedance of each phase of an equivalent delta-connected load. The frequency of operation is 60 Hz.
- A 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×FCThree Impedances each of (9 - j18)N are connected in mesh across a three-phase 415V ac supply. Determine the phase current, line current, active power, reactive power drawn from supply. Also draw the Phasor diagram for the mesh connection and marks the Line current ,phase current line voltage and phase angle between phase current and pahse voltage. phase current (Ip) Line current real power reactive powerImpedances Z2 and Z3 in parallel are in series with impedance Z1 across a 100 V, 50 Hz ac supply. Z1 =6.25 + j1.25 ohm; Z2 = 5+ j0 ohm and Z3 = 5-jXc ohm. Determine the value of capacitance of Xc such that the total curent of the circuit will be in phase with the total voltage. When is then the circuit current and power.