Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >   A 20-MVA, 6.6-kV, 3-phase alternator is conn... Start Learning for Free
A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)
    Correct answer is '642.2'. Can you explain this answer?
    Most Upvoted Answer
    A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transm...
    Total zero sequence impedance, +ve sequence impedance and -ve sequence
    Impedance
    Fault current
    Neutral voltage
    Free Test
    Community Answer
    A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transm...

    - **Calculating Fault Current**

    The fault current can be calculated using the positive-sequence impedance of the alternator and the transmission line. The fault current will flow through the inductive reactor and the zero-sequence impedance of the alternator.

    - **Calculating Voltage at Neutral**

    The voltage at the neutral point of the alternator during the fault can be found using the fault current, the impedance of the inductive reactor, and the zero-sequence impedance of the alternator. By calculating the voltage drop across the inductive reactor, we can determine the voltage at the neutral point.

    - **Final Calculation**

    By applying the fault current and the impedance values in the calculations, we can determine the voltage at the neutral point of the alternator during the fault. The correct answer of '642.2 V' can be obtained by following these calculations accurately.
    Explore Courses for Electrical Engineering (EE) exam

    Similar Electrical Engineering (EE) Doubts

    Top Courses for Electrical Engineering (EE)

    A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer?
    Question Description
    A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer?.
    Solutions for A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
    Here you can find the meaning of A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer?, a detailed solution for A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer? has been provided alongside types of A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04, respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero-sequence impedances of the transmission line are j0.1, j0.1 and j0.3, respectively. All the per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage (in V) of the alternator neutral with respect to ground during the fault is (Answer up to one decimal place)Correct answer is '642.2'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
    Explore Courses for Electrical Engineering (EE) exam

    Top Courses for Electrical Engineering (EE)

    Explore Courses
    Signup for Free!
    Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
    10M+ students study on EduRev