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 Which, among the following is the correct expression for star-delta conversion?
  • a)
    R1=Ra*Rb/(Ra+Rb+Rc), R2=Rb*Rc/(Ra+Rb+Rc), R3=Rc*Ra/(Ra+Rb+Rc)b)
  • b)
    R1=Ra/(Ra+Rb+Rc), R2=Rb/(Ra+Rb+Rc), Rc=/(Ra+Rb+Rc)
  • c)
    R1=Ra+Rb+Ra*Rb/Rc, R2=Rc+Rb+Rc*Rb/Ra, R3=Ra+Rc+Ra*Rc/Rb
  • d)
    R1=Ra*Rb/Rc, R2=Rc*Rb/Ra, R3=Ra*Rc/Rb
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which, among the following is the correct expression for star-delta co...
 After converting to delta, each delta connected resistance is equal to the sum of the two resistance it is connected to+product of the two resistances divided by the remaining resistance. Hence R1=Ra+Rb+Ra*Rb/Rc, R2=Rc+Rb+Rc*Rb/Ra, R3=Ra+Rc+Ra*Rc/Rb.
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Most Upvoted Answer
Which, among the following is the correct expression for star-delta co...
Star-Delta Conversion
Star-delta conversion is a technique used in electrical engineering to convert a star (Y) configuration of resistors to a delta (Δ) configuration, or vice versa. This conversion is helpful in simplifying complex circuit analysis.

Expression for Star-Delta Conversion
- The correct expression for star-delta conversion is as follows:
- R1=Ra+Rb+Ra*Rb/Rc
- R2=Rc+Rb+Rc*Rb/Ra
- R3=Ra+Rc+Ra*Rc/Rb

Explanation
- In the star-delta conversion, resistors in the star configuration are converted to an equivalent delta configuration.
- The resistors Ra, Rb, and Rc in the star configuration are related to the resistors R1, R2, and R3 in the delta configuration through the given expressions.
- By using these expressions, one can easily convert between the star and delta configurations in electrical circuits, making it easier to analyze and solve complex circuit problems.
By understanding the correct expression for star-delta conversion and applying it in circuit analysis, electrical engineers can simplify circuit calculations and design more efficiently.
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Which, among the following is the correct expression for star-delta conversion?a)R1=Ra*Rb/(Ra+Rb+Rc), R2=Rb*Rc/(Ra+Rb+Rc), R3=Rc*Ra/(Ra+Rb+Rc)b)b)R1=Ra/(Ra+Rb+Rc), R2=Rb/(Ra+Rb+Rc), Rc=/(Ra+Rb+Rc)c)R1=Ra+Rb+Ra*Rb/Rc, R2=Rc+Rb+Rc*Rb/Ra, R3=Ra+Rc+Ra*Rc/Rbd)R1=Ra*Rb/Rc, R2=Rc*Rb/Ra, R3=Ra*Rc/RbCorrect answer is option 'C'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Which, among the following is the correct expression for star-delta conversion?a)R1=Ra*Rb/(Ra+Rb+Rc), R2=Rb*Rc/(Ra+Rb+Rc), R3=Rc*Ra/(Ra+Rb+Rc)b)b)R1=Ra/(Ra+Rb+Rc), R2=Rb/(Ra+Rb+Rc), Rc=/(Ra+Rb+Rc)c)R1=Ra+Rb+Ra*Rb/Rc, R2=Rc+Rb+Rc*Rb/Ra, R3=Ra+Rc+Ra*Rc/Rbd)R1=Ra*Rb/Rc, R2=Rc*Rb/Ra, R3=Ra*Rc/RbCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which, among the following is the correct expression for star-delta conversion?a)R1=Ra*Rb/(Ra+Rb+Rc), R2=Rb*Rc/(Ra+Rb+Rc), R3=Rc*Ra/(Ra+Rb+Rc)b)b)R1=Ra/(Ra+Rb+Rc), R2=Rb/(Ra+Rb+Rc), Rc=/(Ra+Rb+Rc)c)R1=Ra+Rb+Ra*Rb/Rc, R2=Rc+Rb+Rc*Rb/Ra, R3=Ra+Rc+Ra*Rc/Rbd)R1=Ra*Rb/Rc, R2=Rc*Rb/Ra, R3=Ra*Rc/RbCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Which, among the following is the correct expression for star-delta conversion?a)R1=Ra*Rb/(Ra+Rb+Rc), R2=Rb*Rc/(Ra+Rb+Rc), R3=Rc*Ra/(Ra+Rb+Rc)b)b)R1=Ra/(Ra+Rb+Rc), R2=Rb/(Ra+Rb+Rc), Rc=/(Ra+Rb+Rc)c)R1=Ra+Rb+Ra*Rb/Rc, R2=Rc+Rb+Rc*Rb/Ra, R3=Ra+Rc+Ra*Rc/Rbd)R1=Ra*Rb/Rc, R2=Rc*Rb/Ra, R3=Ra*Rc/RbCorrect answer is option 'C'. 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.
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