Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > For a three phase full controlled converter, ...
Start Learning for Free
For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given time
- a)two thyristors are conducting from each group
- b)one thyristor is conducting from each group
- c)one thyristor is conducting from either of the groups
- d)all 6 thyristors are conducting at a time
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
For a three phase full controlled converter, with 3 thyristors in the ...
Let’s say T1, T3 and T5 belong to the positive group and T2, T4 and T6 to the negative group. At any given time one SCR from each group conducts. e.g. T1 and T6 or T1 and T2.
Most Upvoted Answer
For a three phase full controlled converter, with 3 thyristors in the ...
Explanation:
In a three-phase full controlled converter, there are three thyristors in the upper or positive group and three thyristors in the lower or negative group. Each group of thyristors is responsible for controlling the current flow in one phase of the three-phase system.
At any given time, the operation of the thyristors can be categorized into three different modes:
1. Two thyristors are conducting from each group:
- In this mode, two thyristors from the upper group and two thyristors from the lower group conduct simultaneously, while the remaining thyristors are non-conducting.
- This mode is used when the converter is operating in the inverter mode, where the load is supplying power back to the source.
- The conducting thyristors provide a path for the current to flow through the load.
2. One thyristor is conducting from each group:
- In this mode, one thyristor from the upper group and one thyristor from the lower group conduct simultaneously, while the remaining thyristors are non-conducting.
- This mode is used when the converter is operating in the rectifier mode, where the source is supplying power to the load.
- The conducting thyristors provide a path for the current to flow from the source to the load.
3. One thyristor is conducting from either of the groups:
- In this mode, one thyristor from either the upper or lower group conducts, while the remaining thyristors are non-conducting.
- This mode is used during the commutation period when the conducting thyristor needs to be turned off and another thyristor needs to be turned on to maintain the current flow.
- The conducting thyristor provides a path for the current to flow, while the non-conducting thyristors are in a blocking state.
Conclusion:
Based on the modes of operation explained above, it is clear that at any given time, only one thyristor is conducting from each group. Therefore, the correct answer is option 'B' - one thyristor is conducting from each group.
In a three-phase full controlled converter, there are three thyristors in the upper or positive group and three thyristors in the lower or negative group. Each group of thyristors is responsible for controlling the current flow in one phase of the three-phase system.
At any given time, the operation of the thyristors can be categorized into three different modes:
1. Two thyristors are conducting from each group:
- In this mode, two thyristors from the upper group and two thyristors from the lower group conduct simultaneously, while the remaining thyristors are non-conducting.
- This mode is used when the converter is operating in the inverter mode, where the load is supplying power back to the source.
- The conducting thyristors provide a path for the current to flow through the load.
2. One thyristor is conducting from each group:
- In this mode, one thyristor from the upper group and one thyristor from the lower group conduct simultaneously, while the remaining thyristors are non-conducting.
- This mode is used when the converter is operating in the rectifier mode, where the source is supplying power to the load.
- The conducting thyristors provide a path for the current to flow from the source to the load.
3. One thyristor is conducting from either of the groups:
- In this mode, one thyristor from either the upper or lower group conducts, while the remaining thyristors are non-conducting.
- This mode is used during the commutation period when the conducting thyristor needs to be turned off and another thyristor needs to be turned on to maintain the current flow.
- The conducting thyristor provides a path for the current to flow, while the non-conducting thyristors are in a blocking state.
Conclusion:
Based on the modes of operation explained above, it is clear that at any given time, only one thyristor is conducting from each group. Therefore, the correct answer is option 'B' - one thyristor is conducting from each group.
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
For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. Can you explain this answer?
Question Description
For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. 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 For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. 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 For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. Can you explain this answer?.
For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. 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 For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. 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 For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. Can you explain this answer?.
Solutions for For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. 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 For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice For a three phase full controlled converter, with 3 thyristors in the upper or positive group and 3 thyristors in the lower or negative group, at any given timea)two thyristors are conducting from each groupb)one thyristor is conducting from each groupc)one thyristor is conducting from either of the groupsd)all 6 thyristors are conducting at a timeCorrect answer is option 'B'. 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
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup