Answer all or skip the question When a fault occurs at the terminals of a motor, it behaves like a generator in the very fevmilliseconds after the fault occurs.The subtransient reactance of a generator is typically much larger than the steady-state reactance.2)Select one:1)O TrueO FalseSelect one:O TrueO FalseThe voltage in a distribution system isthan the voltage in the transmission systemNeutral Impedances only affect the calculation of the zero-sequence Theveninimpedance, and do not affect the value of the positive or the negative sequence4)impedances.Select one:3)O a HigherLowerSelect one:Oc Equal toO TrueO d Less than or equal toFalse

1 ) generally the subtrasient response of a generator is larger than the steady state reactance. So…

The subtransient reactance of a generator is typically much larger than the steady-state reactance. 2) Select one: O True 1) OFalse Select one: O True False The voltage in a distribution system is Neutral Impedances only affect the calculation of the zero-sequence Thevenin impedance, and do not affect the value of the positive or the negative sequence impedances. than the voltage in the transmission system 4) Select one 3) Oa Higher bLower Select one: O cloual to O True O d Less than or equal to False

The subtransient reactance of a generator is typically much larger than the steady-state reactance. 2) Select one: O True 1) OFalse Select one: O True False The voltage in a distribution system is Neutral Impedances only affect the calculation of the zero-sequence Thevenin impedance, and do not affect the value of the positive or the negative sequence impedances. than the voltage in the transmission system 4) Select one 3) Oa Higher bLower Select one: O cloual to O True O d Less than or equal to False

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 2.32MCQ: While the instantaneous electric power delivered by a single-phase generator under balanced...

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While the instantaneous electric power delivered by a single-phase generator under balanced steady-state conditions is a function of time havi ng two components of a constant and a double-frequency sinusoid, the total instantaneous electric power delivered by a three-phase generator under balanced steady-state conditions is a constant. (a) True (b) False
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.)
For the power system in Problem 3.41, the synchronous motor absorbs 1500 MW at 0.8 power factor leading with the bus 3 voltage at 18 kV. Determine the bus I and bus 2 voltages in kV Assume that generators I and 2 deliver equal real powers and equal reactive powers. Also assume a balanced three-phase system with positive-sequence sources.
The motors M1andM2 of Problem 3.45 have inputs of 120 and 60 MW, respectively, at 13.2 kV, and both operate at unity power factor. Determine the generator terminal voltage and voltage regulation of the line. Neglect transformer phase shifts.
The units of admittance, conductance, and susceptance are siemens. (a) True (b) False
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