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A 30 KVA, 230 V, Y connected, 3 phase salient pale synchronous generator supplies rated load at 0.707 lagging power factor. The reactance per phase are Xd = 2Xq = 4 Ω. Neglect the armature resistance determine the power angle (in degree).
Correct answer is between '22,26'. Can you explain this answer?
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A 30 KVA, 230 V, Y connected, 3 phase salient pale synchronous generat...
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Given data:
Apparent power (S) = 30 KVA
Voltage (V) = 230 V
Power factor (pf) = 0.707 lagging
Xd = 2Xq = 4
To find:
1. Real power (P)
2. Reactive power (Q)
3. Excitation voltage (E)
4. Line current (I)
Solution:
1. Real power (P) = Apparent power (S) x power factor (pf)
P = 30 x 0.707
P = 21.21 KW
2. Reactive power (Q) = Apparent power (S) x sin(cos^-1(pf)))
Q = 30 x sin(cos^-1(0.707))
Q = 18.74 KVAR
3. Excitation voltage (E) = V + IaXd
Where Ia is the armature current per phase
Ia = S/(√3 x V)
Ia = 30/(√3 x 230)
Ia = 0.123 A
E = 230 + (0.123 x 4)
E = 230.492 V
4. Line current (I) = Ia/√3
I = 0.123/√3
I = 0.071 A
Therefore, the real power supplied by the generator is 21.21 KW, the reactive power supplied is 18.74 KVAR, the excitation voltage is 230.492 V, and the line current is 0.071 A.
Apparent power (S) = 30 KVA
Voltage (V) = 230 V
Power factor (pf) = 0.707 lagging
Xd = 2Xq = 4
To find:
1. Real power (P)
2. Reactive power (Q)
3. Excitation voltage (E)
4. Line current (I)
Solution:
1. Real power (P) = Apparent power (S) x power factor (pf)
P = 30 x 0.707
P = 21.21 KW
2. Reactive power (Q) = Apparent power (S) x sin(cos^-1(pf)))
Q = 30 x sin(cos^-1(0.707))
Q = 18.74 KVAR
3. Excitation voltage (E) = V + IaXd
Where Ia is the armature current per phase
Ia = S/(√3 x V)
Ia = 30/(√3 x 230)
Ia = 0.123 A
E = 230 + (0.123 x 4)
E = 230.492 V
4. Line current (I) = Ia/√3
I = 0.123/√3
I = 0.071 A
Therefore, the real power supplied by the generator is 21.21 KW, the reactive power supplied is 18.74 KVAR, the excitation voltage is 230.492 V, and the line current is 0.071 A.
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A 30 KVA, 230 V, Y connected, 3 phase salient pale synchronous generator supplies rated load at 0.707 lagging power factor. The reactance per phase are Xd= 2Xq= 4 Ω. Neglect the armature resistance determine the power angle (in degree).Correct answer is between '22,26'. Can you explain this answer?
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A 30 KVA, 230 V, Y connected, 3 phase salient pale synchronous generator supplies rated load at 0.707 lagging power factor. The reactance per phase are Xd= 2Xq= 4 Ω. Neglect the armature resistance determine the power angle (in degree).Correct answer is between '22,26'. 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 30 KVA, 230 V, Y connected, 3 phase salient pale synchronous generator supplies rated load at 0.707 lagging power factor. The reactance per phase are Xd= 2Xq= 4 Ω. Neglect the armature resistance determine the power angle (in degree).Correct answer is between '22,26'. 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 30 KVA, 230 V, Y connected, 3 phase salient pale synchronous generator supplies rated load at 0.707 lagging power factor. The reactance per phase are Xd= 2Xq= 4 Ω. Neglect the armature resistance determine the power angle (in degree).Correct answer is between '22,26'. Can you explain this answer?.
A 30 KVA, 230 V, Y connected, 3 phase salient pale synchronous generator supplies rated load at 0.707 lagging power factor. The reactance per phase are Xd= 2Xq= 4 Ω. Neglect the armature resistance determine the power angle (in degree).Correct answer is between '22,26'. 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 30 KVA, 230 V, Y connected, 3 phase salient pale synchronous generator supplies rated load at 0.707 lagging power factor. The reactance per phase are Xd= 2Xq= 4 Ω. Neglect the armature resistance determine the power angle (in degree).Correct answer is between '22,26'. 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 30 KVA, 230 V, Y connected, 3 phase salient pale synchronous generator supplies rated load at 0.707 lagging power factor. The reactance per phase are Xd= 2Xq= 4 Ω. Neglect the armature resistance determine the power angle (in degree).Correct answer is between '22,26'. Can you explain this answer?.
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