Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > In a semi converter feeding a resistive load,...
Start Learning for Free
In a semi converter feeding a resistive load, the firing angle is
a
. Each thyristor conducts for- a)pradians
- b)(p-a) radians
- c)(p+a) radians
- d)(p- 0.5a) radians
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
In a semi converter feeding a resistive load, the firing angle is a. E...
The conduction is from
a
to p
.Most Upvoted Answer
In a semi converter feeding a resistive load, the firing angle is a. E...
Answer:
In a semi converter, the firing angle determines the delay between the triggering of the thyristors and the conduction of current through them. This firing angle is denoted by 'a'.
Thyristor Conduction:
During conduction, the current flows through one of the thyristors. In a semi converter, there are two thyristors, and each conducts for a specific duration during a cycle. The duration for which the thyristor conducts is given by:
Conduction time = (1 - a/π) * T
Where T is the time period of the input waveform.
Firing Angle:
The firing angle determines the delay in the triggering of the thyristors. For a resistive load, the thyristors are triggered at certain points during the input waveform to control the power delivered to the load. The firing angle 'a' represents the delay in triggering the thyristors.
Calculation:
Since there are two thyristors in a semi converter, the first thyristor conducts for the duration of (1 - a/π) * T.
For the second thyristor to conduct, the first thyristor should stop conducting. The time taken for this transition is equal to the duration for which the first thyristor conducts.
Hence, the second thyristor starts conducting after the first thyristor stops conducting completely. Therefore, the firing angle for the second thyristor is given by:
Firing angle for second thyristor = π - (1 - a/π) * π
= π - (π - a)
= a
Therefore, the firing angle for the second thyristor is (π - a) radians.
Hence, the correct answer is option 'B': (π - a) radians.
In a semi converter, the firing angle determines the delay between the triggering of the thyristors and the conduction of current through them. This firing angle is denoted by 'a'.
Thyristor Conduction:
During conduction, the current flows through one of the thyristors. In a semi converter, there are two thyristors, and each conducts for a specific duration during a cycle. The duration for which the thyristor conducts is given by:
Conduction time = (1 - a/π) * T
Where T is the time period of the input waveform.
Firing Angle:
The firing angle determines the delay in the triggering of the thyristors. For a resistive load, the thyristors are triggered at certain points during the input waveform to control the power delivered to the load. The firing angle 'a' represents the delay in triggering the thyristors.
Calculation:
Since there are two thyristors in a semi converter, the first thyristor conducts for the duration of (1 - a/π) * T.
For the second thyristor to conduct, the first thyristor should stop conducting. The time taken for this transition is equal to the duration for which the first thyristor conducts.
Hence, the second thyristor starts conducting after the first thyristor stops conducting completely. Therefore, the firing angle for the second thyristor is given by:
Firing angle for second thyristor = π - (1 - a/π) * π
= π - (π - a)
= a
Therefore, the firing angle for the second thyristor is (π - a) radians.
Hence, the correct answer is option 'B': (π - a) radians.
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
|
|
Top Courses for Electrical Engineering (EE)View all
In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect answer is option 'B'. Can you explain this answer?
Question Description
In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect 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 a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect 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 a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect answer is option 'B'. Can you explain this answer?.
In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect 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 a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect 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 a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect answer is option 'B'. Can you explain this answer?.
Solutions for In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect 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 a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts fora)p radiansb)(p - a) radiansc)(p + a) radiansd)(p - 0.5 a) radiansCorrect 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