Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > In a single Phase full converter with resisti...
Start Learning for Free
In a single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-
- a)π and π - α respectively
- b)α and π - α respectively
- c)π - α and α respectively
- d)π + α and α respectively
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
In a single Phase full converter with resistive load and firing angle ...
The firing angle in a single-phase full converter with a resistive load determines the delay in turning on the thyristors and controlling the output voltage.
The full converter consists of four thyristors connected in a bridge configuration. When the firing angle is set to zero, all four thyristors are triggered simultaneously at the beginning of each half-cycle of the input voltage waveform. This results in full-wave rectification of the input voltage, and the output voltage is equal to the input voltage.
However, when the firing angle is not zero, the thyristors are triggered with a delay, after the input voltage has already started its cycle. This delay causes a portion of the input voltage waveform to be blocked, resulting in a reduced output voltage. The firing angle determines the amount of waveform that is blocked and thus controls the average output voltage.
For example, if the firing angle is set to 30 degrees, the thyristors will be triggered 30 degrees after the start of each half-cycle of the input voltage waveform. This means that the first 30 degrees of the waveform will be blocked, resulting in a reduced average output voltage.
The firing angle can be adjusted using a control circuit that measures the output voltage and adjusts the triggering timing of the thyristors accordingly. By changing the firing angle, the output voltage can be controlled and varied as needed.
The full converter consists of four thyristors connected in a bridge configuration. When the firing angle is set to zero, all four thyristors are triggered simultaneously at the beginning of each half-cycle of the input voltage waveform. This results in full-wave rectification of the input voltage, and the output voltage is equal to the input voltage.
However, when the firing angle is not zero, the thyristors are triggered with a delay, after the input voltage has already started its cycle. This delay causes a portion of the input voltage waveform to be blocked, resulting in a reduced output voltage. The firing angle determines the amount of waveform that is blocked and thus controls the average output voltage.
For example, if the firing angle is set to 30 degrees, the thyristors will be triggered 30 degrees after the start of each half-cycle of the input voltage waveform. This means that the first 30 degrees of the waveform will be blocked, resulting in a reduced average output voltage.
The firing angle can be adjusted using a control circuit that measures the output voltage and adjusts the triggering timing of the thyristors accordingly. By changing the firing angle, the output voltage can be controlled and varied as needed.
Free Test
FREE
| Start Free Test |
Community Answer
In a single Phase full converter with resistive load and firing angle ...
Concept:
Phase-controlled converters:
- It is a device which is used to convert A.C sinusoidal into D.C.
- In this the A.C input is fed from transformer stepdown side and then input is converted into D.C output.
- Here we are talking about single phase fully controlled converter.
Single phase full converter with resistive load:
- An A.C voltage source of Vs = Vmsin(wt) is connected.
- Four controlled thyristors and a resistive load is connected.
- Let Vo be the output voltage.
Working:
- Let thyristor T1 and T4 are triggered at a firing angle of 'α'.
- During the first cycle from '0 to π' the current starts flowing at firing 'αand flows through Vs→ T1→ RL→ T4→ Vs.
- During the second cycle from 'π→2π' the thyristor T2 and T3 are triggered at (π + α)
- The current flows through Vs→ T2→ RL→ T3→ Vs.
Current flowing through a resistive load will be
I = Vo/R
We can see from the above graph that the current will be zero from '0 to α' and the current will be non-zero from α to π.
So, the current will be non-zero and zero from 'π - α' and 'α' respectively.
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 single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. Can you explain this answer?
Question Description
In a single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. 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 single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. 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 single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. Can you explain this answer?.
In a single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. 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 single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. 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 single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. Can you explain this answer?.
Solutions for In a single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect 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.
Here you can find the meaning of In a single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
In a single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for In a single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of In a single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice In a single Phase full converter with resistive load and firing angle α. The load current is non-zero and zero, respectively for-a)π and π - α respectivelyb)α and π - α respectivelyc)π - α and α respectivelyd)π + α and α respectivelyCorrect answer is option 'C'. 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