220Vrms, 3-Ph, Y-connected symmetrical positive sequence source is connected to 21+ J24Q/Ph, Y-connected load through 1+J0.5Q/Ph transmission line. Find the average power absorbed by the load?
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- A balanced three-phase load is connected to a 4.16-kV, three-phase, fourwire, grounded-wye dedicated distribution feeder. The load can be mode led by an impedance of ZL=(4.7+j9)/phase, wye-connected. The impedance of the phase conductors is (0.3+j1). Determine the following by using the phase A to neutral voltage as a reference and assume positive phase sequence: (a) Line currents for phases A, B, and C. (b) Line-to-neutral voltages for all three phases at the load. (c) Apparent. active, and reactive power dissipated per phase, and for all three phases in the load. (d) Active power losses per phase and for all three phases in the phase conductors.L-type equivalent circuit and parameters for a continuous sinusoidal phase of a 5.5 kW, 1480 rpm, line voltage 220 V and frequency 50 Hz star-connected 3-phase ASM, ignoring core (iron) losses given as follows: R1=0.21 Ohm, R2=0.18 Ohm, X1=X2=0.66 Ohm and Xm=9.9 Ohm i, i, R, R, eee R, (1-s) m S How many times the rated current will the inrush current be when the ASM is started directly? O 6.3414 O 1.2558 5.2280 O 3.7473 O 7.1534 4.3763 O 2.6455 8.0815L-type equivalent circuit and parameters for a continuous sinusoidal phase of a 5.5 kW, 1450 rpm, line voltage 220 V and frequency 50 Hz star-connected 3-phase ASM, ignoring core (iron) losses given as follows: R1=0.21 Ohm, R2=0.18 Ohm, X1=X2=0.66 Ohm and Xm=9.9 Ohm i, i,R, R, jX m १ (1-s) R, S How many times the rated current will the inrush current be when the ASM is started directly? O 4.3763 O 2.6455 O 6.3414 7.1534 O 5.2280 O 8.0815 O 3.7473 O 1.2558
- L-type equivalent circuit and parameters for a continuous sinusoidal phase of a 5.5 kW, 1450 rpm, line voltage 220 V and frequency 50 Hz star-connected 3-phase ASM, ignoring core (iron) losses given as follows: R1=0.21 Ohm, R2=0.18 Ohm, X1=X2=0.66 Ohm and Xm=9.9 Ohm How many times the inrush current will be the rated current when the ASM is started directly?Transkrmers phase with each bank with - adjuste 35. Three single-phase transformers, cach of 100 kVA rating, are conected in a closed-delta arrangement. If one of them is taken out, it would be possible to load the bank in such a manner that cach one is loaded to the extent of: A 86.6 kVA C. 57.7KVA B. 66.7 kVA D. 33.33 kVA when load is at unity power factor. 36. Average power factor at which V-V bank separate is A 86.6% C. 66.67% В. 73.3% D. None of these 37. Scott connections are used for: A. single-phase to three-phase transformation C. three-phase to two-phase transformation B. three-phase to single-phase transformation (D Any of the above 38. The current in low voltage winding of a 25 kVA, 6600/400 V, 50 Hz, 3-phase Y-A transformer, at full load is: A 36 A Č. 65,32 A B. 20.78 A D. 40.2 A 39. The current in high voltage winding of a 20 kVA, 2200/220 V, 50 Hz, 3-phase A-A transformer, at full load is: (A. 3.03 A C. jo.5 A B. 5.25 A D. None of above 40. The current in low voltage…A generator of 50 MVA, 4kV, Xd" = 25% and transformer of 50 MVA, 4 2 kV, delta/115 kV wye grounded, operating on 3.8 kV tap where XT" = 10% are to be connected into single equivalent reactance. What is the single equivalent reactance on a 100 MVA, 110 kV base? A. j0.6039 pu B. j0.6667 pu C. j0.8241 pu D. j0.8663 pu The answer for this is letter C based in my reviewer but I dont know the solution. Please send me solution for this
- Power factor correction is usually done by adding _________ to the load circuit.Select the correct response:a. switchb. capacitorc. inductive loads1 PROBLEM 20020° V rms, Vbn 1. A balanced three-phase Y-Y system has the phase voltages of Van 200/120° V rms, and Ven = 2002(-120°) Vrms. The load impedance per phase is Z₁ = 50 - j100 n. a Van Vcn n Vbn Ia Ib Ic B Zu (b) Determine the line currents Īa, Ip and Īc. (c) Determine the total average power delivered to the three loads. N C = ZL (a) The balanced three-phase circuit has a negative phase sequence. Circle your choice. (1) True (ii) Falseof stion 4 A single phase transmission line is delivering 450 kVA load at 12 kV. Its resistance is 4.5 2 and inductive reactance is 6 2. If the load power factor is 0.9 lagging. Determine the Current through the line Sending end voltage Sending end power factor Regulation of transmission line Efficiency of transmission line A load of 120 MW at a power factor of 0.8 lagging can be delivered by a 3-phase transmission line. The voltage at the intained at 33 kV and the loss in the transmission as 7.5 % of the power delivered. (Consider
- Q2) A 13.2-kV single-phase generator supplies power to a load through a transmission line. The load's impedance is Ztoad 500 236.87° ohm , and the transmission line's impedance is Zine = 60 253.1° ohm. To reduce transmission line losses to 0.0103 of its losses without using the transformers design and use two transformers T1 between the generator and the transmission line and T2 between the transmission line and the load.2. The one-line diagram of a three-phase power system is as shown in the figure below. Impedances are marked in per unit on a 100-MVA, 400-kV base. The load at bus 2 is S2 = 15.93 MW-j33.4 Mvar, and at bus 3 is S3 = 77 MW +j14 Mvar. It is required to hold the voltage at bus 3 at 4006 0 kV. Working in per unit, determine the voltage at buses 2 and 1. V3 j0.5 pu V₂ S₂ j0.4 pu S3L-type equivalent circuit and parameters for a continuous sinusoidal phase of a 5.5 kW, 1450 rpm, line voltage 220 V and frequency 50 Hz star-connected 3-phase ASM, ignoring core (iron) losses given as follows: R1=0.21 Ohm, R2=0.18 Ohm, X1=X2=0.66 Ohm and Xm=9.9 Ohm How many times the rated current will the inrush current be when the ASM is started directly?