3P AC Circuits

A 220 V, 3-phase supply has a balanced delta connected load with impedance of 15 + j20 Ω/phase. What is the total real power of the load in watts?

A delta connected load of 9 + j12 Ω/phase is supplied by a 230 V, 3-phase source through a line with an impedance of 0.06 + j0.12 Ω/conductor. Find the load voltage in volts.

A balanced wye-connected load with resistance of 8 Ω/phase and no reactance is supplied by a 240v, 3-phase source. Find the real power of the load in watts.

A balanced delta load of 3+j4 ohms per phase is connected to a balanced 110v source. Find the line current.

Three identical resistors are connected in wye across 220 v, 3-phase lines. The line current is12.7 A. To what value in volts should the line voltage be changed the same line current with the resistors connected in delta?

A delta 3Φ, 4-wire secondary 230/115 V would have a high-leg to neutral voltage of ________.

Convert the delta connected impedance of \(12\angle 36^\circ\) Ω to a balanced wye connected impedance.

In a balanced 3-phase voltage source with phase sequence abc, the phase A voltage is \(127\angle 0^\circ\) volts. Find the phase C voltage.

A 220 V, 3-phase, 4-wire abc system supplies unbalanced wye-connected resistances of 10 Ω, 15 Ω, and 20 Ω. Determine the total power of the system in watts.

A balanced delta connected load draws 10 A of line current and 3 KW at 220 v. Determine the value of resistance of each phase of the load.

A 440 V, three-phase source supplies a wye connected 10 kVA load at 0.8 lagging power factor and a delta-connected 10 kVA unity power factor load. Calculate the total apparent power input to the two loads.

A balanced wye-connected load with a resistance of 8 ohms/phase and no reactance is supplied by a 240 V, 3-phase source. Find the real power of the load in watts.

An abc phase sequence three-phase voltage source connected in a balanced wye has a line voltage of \(V_{ab} = 208\angle 0^\circ\) V rms. Determine the phase voltage \(V_{bn}\).

A balanced delta connected load of 4 − j3 Ω per phase is fed by a 380 V, 3-phase system. Find the reactive power.

In a delta connected circuit of three equal resistors, when one resistor is open, the power will be

Three 100 μF capacitors are connected in delta to a 500-volt, three-phase, 50 Hz supply. Find the line current.

A balanced delta connected load consists of \(20\angle 25^\circ\) Ω impedances. The 60 Hz line voltage is 208 V. What is the line current?

A 230 v, 3-phase source supplies a balanced delta connected load with impedance of 8-j6 ohms per phase. Calculate the line current in amperes.

In a balanced 3-phase wye-connected voltage source with phase sequence abc, \(V_{ab} = 230\angle 10^\circ\) V. Find the phase voltage \(V_{cn}\).

A 480-V rms line feeds two balanced three-phase loads. If the two loads are rated as follows, Load 1: 5 kVA at 0.8 p.f. lagging Load 2: 10 kVA at 0.9 p.f. lagging Determine the magnitude of the line current from the 480-V rms source.