Don't use other platforms answer and also don't use chatgpt. A 3 phase 6000 kVA, 6600V, Y connected 2 pole 60 Hz alternator has the following characteristics: a. Field current= 125A, Open Circuit Voltage line value=8000V, Short circuit current=800A At full load the resistance drop is 3%. Find voltage regulation at power factor of 0.8 lagging

Don't use other platforms answer and also don't use chatgpt. A 3 phase 6000 kVA, 6600V, Y connected 2 pole 60 Hz alternator has the following characteristics: a. Field current= 125A, Open Circuit Voltage line value=8000V, Short circuit current=800A At full load the resistance drop is 3%. Find voltage regulation at power factor of 0.8 lagging

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.41P

See similar textbooks

Similar questions

A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and L=40mH. (a) Determine the power factor of the circuit and state whether it is lagging or leading. (b) Determine the real and reactive power absorbed by the load. (c) Calculate the peak magnetic energy Wint stored in the inductor by using the expression Wint=L(Irms)2 and check whether the reactive power Q=Wint is satisfied. (Note: The instantaneous magnetic energy storage fluctuates between zero and the peak energy. This energy must be sent twice each cycle to the load from the source by means of reactive power flows.)
Consider two interconnected voltage sources connected by a line of impedance Z=jX, as shown in Figure 2.27. (a) Obtain expressions for P12 and Q12. (b) Determine the maximum power transfer and the condition for it to
A 1200 kVA, 6600 volts, 3-phase Y connected alternator, has an effective resistance of 0.4 ohms and a synchronous reactance of 6 ohms per phase. It delivers full load current at 0.8 lagging power factor at rated voltage. What will be the generated voltage if the power factor is change to 0.8 leading. Solve for the % voltage regulation both for 0.8 lagging and 0.8 leading power factors.
A 30 MVA, three-phase, wye-connected, 60 Hz, 13.8 kV synchronous alternator has negligible stator resistance and synchronous reactance of 10 W/phase. Calculate the % voltage regulation of the alternator when it is operation in isolation (stand-alone) and delivering rated MVA to a 0.866 pf leading load at 13.8 kV. Calculate the % voltage regulation of the alternator when it is operation in isolation (stand-alone) and delivering rated MVA to a 0.707 pf lagging load at 13.8 kV.
A 15kVA, 440V, single-phase alternator draws a field current of 5A at rated load. With the same field current, the open circuit emf and short-circuit current are 100V and 80A respectively. The ohmic resistance of the armature between terminals is 0.12 ohm. The ratio of effective to ohmic resistance maybe taken as 1.1. Determine the voltage regulation (in %) when the load is purely resistive.
A single-phase alternator connected to 6,600-V bus-bars has a synchronous impedance of 10Ω and a resistance of 1 Ω. If its excitation is such that on open circuit the p.d. would be 5000 V, calculate the maximum load the machine can supply to the external circuit before dropping out of step and the corresponding armature current and p.f. [2864 kW, 787 A, 0.551]
A 6,600V, 1,200 kVA, 3-phase alternator is delivering full load at 0.80 power factor lagging. Its reactance is 25% and resistance is negligible. By changing its excitation, the emf is increased by 30%. At this load, determine the new current and power factor. Draw the single line diagram.
Two 15-kVA, 400-V, 3-ph alternators in parallel supply a total load of 25 kVA at 0.8p.f. lagging. If one alternator shares half the power at unity p.f., determine thep.f. and kVA shared by the other alternator.
A straight-line law connects terminal voltage and load of a 3-phase star connected alternator delivering current at 0.8 power factor lagging. At no-load, the terminal voltage is 3,500 V and at full-load of 2,280 kW, it is 3,300 V. Calculate the terminal voltage when delivering current to a 3-phase, star-connected load having a resistance of 8 o and a reactance of 6 ohm per phase. Assume constant speed and field excitation.
An 11 kV, three-phase, star-connected alternator has a synchronous impedance of10∟80° Ω/phase and operates at unity power factor on infinite bus bars. It supplies acurrent of 300 A by using a general load diagram. Determine: the full-load current for normal excitation ( motor mode), the current and power factor for 100% excitation on 25% overload (generatormode), the maximum power that the machine can develop in the generator mode for50% excitation
A 1200 kVA, 6600 volt, 3-phase Y connected alternator has an effective resistance of 0.40 ohm and a reactance of 6 ohms per phase. It delivers full load current at 0.80 lagging power factor at rated voltage. What will be the terminal voltage for the same excitation and load current, if the power factor is 0.80 leading?
In a Three-phase alternator, a given field current produces an armature current of 250 A on short-circuit and a generated e.m.f. of 1500 V on open-circuit. Calculate the terminal p.d. when a load of 250 A at 6.6 kV and 0.8 p.f. lagging is switched off. Calculate also the regulation of the alternator at the given load. Subject: Electrical engineering