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In an alternator, if armature resistnace is 19 and armature reactance and leakage reactance is 20 each, then synchronous impedance is 1)√17 ohm 2)√50ohm 3) √13 ohm 4) 32ohm?
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In an alternator, if armature resistnace is 19 and armature reactance ...
Answer:
Introduction:
This question is related to the calculation of synchronous impedance of an alternator. The given parameters are armature resistance, armature reactance, and leakage reactance. The synchronous impedance is the impedance seen by the stator of an alternator looking from the rotor side.
Calculation:
The formula for synchronous impedance is Zs = (R + jXl) + jXm, where R is the armature resistance, Xl is the leakage reactance, and Xm is the magnetizing reactance. In this question, the value of Xm is not given. So, we assume that Xm is negligible compared to Xl and ignore it.
Therefore, Zs = (19 + j20) + j20 = 19 + j40
The magnitude of Zs is √(19^2 + 40^2) = √(361 + 1600) = √1961 ≈ 44.28 ohm
Therefore, the correct option is 3) √13 ohm.
Explanation:
Introduction:
This question is related to the calculation of synchronous impedance of an alternator. The given parameters are armature resistance, armature reactance, and leakage reactance. The synchronous impedance is the impedance seen by the stator of an alternator looking from the rotor side.
Calculation:
The formula for synchronous impedance is Zs = (R + jXl) + jXm, where R is the armature resistance, Xl is the leakage reactance, and Xm is the magnetizing reactance. In this question, the value of Xm is not given. So, we assume that Xm is negligible compared to Xl and ignore it.
Therefore, Zs = (19 + j20) + j20 = 19 + j40
The magnitude of Zs is √(19^2 + 40^2) = √(361 + 1600) = √1961 ≈ 44.28 ohm
Therefore, the correct option is 3) √13 ohm.
Explanation:
- This question is related to the calculation of synchronous impedance of an alternator.
- The given parameters are armature resistance, armature reactance, and leakage reactance.
- The formula for synchronous impedance is Zs = (R + jXl) + jXm, where R is the armature resistance, Xl is the leakage reactance, and Xm is the magnetizing reactance.
- In this question, the value of Xm is not given. So, we assume that Xm is negligible compared to Xl and ignore it.
- Therefore, Zs = (19 + j20) + j20 = 19 + j40
- The magnitude of Zs is √(19^2 + 40^2) = √(361 + 1600) = √1961 ≈ 44.28 ohm
- Therefore, the correct option is 3) √13 ohm.
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In an alternator, if armature resistnace is 19 and armature reactance and leakage reactance is 20 each, then synchronous impedance is 1)√17 ohm 2)√50ohm 3) √13 ohm 4) 32ohm?
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In an alternator, if armature resistnace is 19 and armature reactance and leakage reactance is 20 each, then synchronous impedance is 1)√17 ohm 2)√50ohm 3) √13 ohm 4) 32ohm? 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 In an alternator, if armature resistnace is 19 and armature reactance and leakage reactance is 20 each, then synchronous impedance is 1)√17 ohm 2)√50ohm 3) √13 ohm 4) 32ohm? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In an alternator, if armature resistnace is 19 and armature reactance and leakage reactance is 20 each, then synchronous impedance is 1)√17 ohm 2)√50ohm 3) √13 ohm 4) 32ohm?.
In an alternator, if armature resistnace is 19 and armature reactance and leakage reactance is 20 each, then synchronous impedance is 1)√17 ohm 2)√50ohm 3) √13 ohm 4) 32ohm? 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 In an alternator, if armature resistnace is 19 and armature reactance and leakage reactance is 20 each, then synchronous impedance is 1)√17 ohm 2)√50ohm 3) √13 ohm 4) 32ohm? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In an alternator, if armature resistnace is 19 and armature reactance and leakage reactance is 20 each, then synchronous impedance is 1)√17 ohm 2)√50ohm 3) √13 ohm 4) 32ohm?.
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