Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > In HVDC converter stations equipment using th...
Start Learning for Free
In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series because
- a)Current rating of thyristors are low
- b)Voltage rating of thyristors are low
- c)Thyristors always tail to an internal open
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
In HVDC converter stations equipment using thyristor it is necessary t...
Explanation:
In HVDC (High Voltage Direct Current) converter stations, thyristors are commonly used as the switching devices. Thyristors are semiconductor devices that can handle high voltages and currents. However, the voltage rating of a single thyristor is limited, and in order to handle the high voltages used in HVDC applications, a large number of thyristors need to be connected in series.
1. Voltage rating of thyristors is low:
The voltage rating of a single thyristor is typically in the range of a few kilovolts. In HVDC applications, the voltages involved can be in the range of hundreds of kilovolts or even megavolts. Therefore, a single thyristor cannot handle the high voltage levels required, and multiple thyristors need to be connected in series to achieve the desired voltage rating.
2. Current rating of thyristors is low:
Thyristors have a current rating, which is the maximum current that a thyristor can handle continuously without getting damaged. In HVDC applications, high currents are involved, and the current rating of a single thyristor may not be sufficient to handle the required current. By connecting multiple thyristors in series, the overall current handling capacity of the converter station can be increased.
3. Thyristors always tail to an internal open:
This statement is incorrect. Thyristors do not always fail due to an internal open. While thyristors can fail due to various reasons such as overvoltage, overcurrent, or excessive temperature, it is not a fundamental reason for using a large number of thyristors in series in HVDC converter stations.
Therefore, the correct answer is option 'B' - Voltage rating of thyristors are low. By connecting a large number of thyristors in series, the overall voltage rating of the converter station can be increased, allowing it to handle the high voltages involved in HVDC applications.
In HVDC (High Voltage Direct Current) converter stations, thyristors are commonly used as the switching devices. Thyristors are semiconductor devices that can handle high voltages and currents. However, the voltage rating of a single thyristor is limited, and in order to handle the high voltages used in HVDC applications, a large number of thyristors need to be connected in series.
1. Voltage rating of thyristors is low:
The voltage rating of a single thyristor is typically in the range of a few kilovolts. In HVDC applications, the voltages involved can be in the range of hundreds of kilovolts or even megavolts. Therefore, a single thyristor cannot handle the high voltage levels required, and multiple thyristors need to be connected in series to achieve the desired voltage rating.
2. Current rating of thyristors is low:
Thyristors have a current rating, which is the maximum current that a thyristor can handle continuously without getting damaged. In HVDC applications, high currents are involved, and the current rating of a single thyristor may not be sufficient to handle the required current. By connecting multiple thyristors in series, the overall current handling capacity of the converter station can be increased.
3. Thyristors always tail to an internal open:
This statement is incorrect. Thyristors do not always fail due to an internal open. While thyristors can fail due to various reasons such as overvoltage, overcurrent, or excessive temperature, it is not a fundamental reason for using a large number of thyristors in series in HVDC converter stations.
Therefore, the correct answer is option 'B' - Voltage rating of thyristors are low. By connecting a large number of thyristors in series, the overall voltage rating of the converter station can be increased, allowing it to handle the high voltages involved in HVDC applications.
Free Test
FREE
| Start Free Test |
Community Answer
In HVDC converter stations equipment using thyristor it is necessary t...
Because in series connection the current is same and the voltage is divide .
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
In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect answer is option 'B'. Can you explain this answer?
Question Description
In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect 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 In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect 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 In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect answer is option 'B'. Can you explain this answer?.
In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect 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 In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect 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 In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect answer is option 'B'. Can you explain this answer?.
Solutions for In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect 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 In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice In HVDC converter stations equipment using thyristor it is necessary to use a large number of thyristors in series becausea)Current rating of thyristors are lowb)Voltage rating of thyristors are lowc)Thyristors always tail to an internal opend)None of the aboveCorrect 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
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup