Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Calculate the per-unit synchronous reactance ...
Start Learning for Free
Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.
- a)2 pu
- b)4 pu
- c)6 pu
- d)8 pu
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Calculate the per-unit synchronous reactance on the base value of 200 ...
Concept:
The relation between new per-unit value & old per unit value impedance
Where,
Where,
(Zpu)new = New per unit value of impedance
(Zpu)old = Old per unit value of impedance
kVbase = Old base value of voltage
kVnew = New base value of voltage
MVAnew = New base value of power
MVAold = Old base value of power
Calculation:
Given that,
Xd(old) = 1 pu
MVA(new) = 200
MVA(old) = 100
kV(old) = 20
kV(new) = 20
Free Test
FREE
| Start Free Test |
Community Answer
Calculate the per-unit synchronous reactance on the base value of 200 ...
Calculation of Per-Unit Synchronous Reactance:
- Given Base Values:
- S_base = 200 MVA
- V_base = 20 kV
- Given Generator Rating:
- S_gen = 100 MVA
- V_gen = 20 kV
- Xd = 1 pu
Step 1: Calculate the Base Current (I_base):
I_base = S_base / (sqrt(3) * V_base)
I_base = 200 MVA / (sqrt(3) * 20 kV) = 5.7735 kA
Step 2: Calculate the Base Impedance (Z_base):
Z_base = V_base^2 / S_base
Z_base = (20 kV)^2 / 200 MVA = 2 ohms
Step 3: Calculate the Actual Synchronous Reactance (X_d_actual):
X_d_actual = X_d * Z_base
X_d_actual = 1 pu * 2 ohms = 2 ohms
Step 4: Calculate the Per-Unit Synchronous Reactance (X_d_pu):
X_d_pu = X_d_actual / Z_base
X_d_pu = 2 ohms / 2 ohms = 1 pu
Therefore, the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1 pu synchronous reactance is 2 pu. The correct answer is option 'A'.
Attention Electrical Engineering (EE) Students!
To make sure you are not studying endlessly, EduRev has designed Electrical Engineering (EE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electrical Engineering (EE).
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Similar Electrical Engineering (EE) Doubts
Top Courses for Electrical Engineering (EE)View all
Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. Can you explain this answer?
Question Description
Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. 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 Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. 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 Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. Can you explain this answer?.
Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. 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 Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. 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 Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. 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 Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Calculate the per-unit synchronous reactance on the base value of 200 MVA and 20 kV when a 100 MVA with 20 kV synchronous generator has 1pu synchronous reactance.a)2 pub)4 puc)6 pud)8 puCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
|
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup