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In chopper circuit the average value of output voltage is controlled by time ratio control (TRC) method. The chopper is operated at a frequency of 5kHz on a 230 V d.c. supply. If the load voltage is 180 V, then the blocking period of thyristor in each cycle is___(in μsec)
Correct answer is between '43,44'. Can you explain this answer?
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In chopper circuit the average value of output voltage is controlled b...
Milliseconds).
The average value of the output voltage in a chopper circuit is controlled by adjusting the duty cycle, which is the ratio of the on-time of the chopper (when the thyristor conducts) to the total time period of one cycle.
The time period of one cycle is given by T = 1/f, where f is the frequency of operation. In this case, the frequency is given as 5 kHz, so T = 1/5000 seconds.
The duty cycle is given by D = Ton/T, where Ton is the on-time of the chopper. The off-time of the chopper (blocking period of thyristor) is then given by Toff = T - Ton.
To find Ton, we can use the fact that the load voltage is controlled to be 180 V. The average output voltage is given by Vavg = D * Vdc, where Vdc is the input (dc) voltage. In this case, Vdc is given as 230 V.
So, 180 V = D * 230 V.
Solving for D, we have D = 180/230 = 0.7826.
Now, we can use the duty cycle to find Ton. Ton = D * T.
Substituting the values, Ton = 0.7826 * (1/5000) seconds.
Ton ≈ 0.00015652 seconds.
Finally, we can find Toff by subtracting Ton from the time period T. Toff = T - Ton.
Toff = (1/5000) - 0.00015652 seconds.
Toff ≈ 0.00015648 seconds.
Therefore, the blocking period of the thyristor in each cycle is approximately 0.00015648 seconds, or 0.15648 milliseconds.
The average value of the output voltage in a chopper circuit is controlled by adjusting the duty cycle, which is the ratio of the on-time of the chopper (when the thyristor conducts) to the total time period of one cycle.
The time period of one cycle is given by T = 1/f, where f is the frequency of operation. In this case, the frequency is given as 5 kHz, so T = 1/5000 seconds.
The duty cycle is given by D = Ton/T, where Ton is the on-time of the chopper. The off-time of the chopper (blocking period of thyristor) is then given by Toff = T - Ton.
To find Ton, we can use the fact that the load voltage is controlled to be 180 V. The average output voltage is given by Vavg = D * Vdc, where Vdc is the input (dc) voltage. In this case, Vdc is given as 230 V.
So, 180 V = D * 230 V.
Solving for D, we have D = 180/230 = 0.7826.
Now, we can use the duty cycle to find Ton. Ton = D * T.
Substituting the values, Ton = 0.7826 * (1/5000) seconds.
Ton ≈ 0.00015652 seconds.
Finally, we can find Toff by subtracting Ton from the time period T. Toff = T - Ton.
Toff = (1/5000) - 0.00015652 seconds.
Toff ≈ 0.00015648 seconds.
Therefore, the blocking period of the thyristor in each cycle is approximately 0.00015648 seconds, or 0.15648 milliseconds.
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Community Answer
In chopper circuit the average value of output voltage is controlled b...
Vo = Vdc × Ton × f
f = 5 kHz, Vdc = 230 V, Vo = 180
but chopping period
blocking period of SCR
Toff = T – Ton = 0.2 – 0.156 = 0.04347 msec = 43.47 μsec
f = 5 kHz, Vdc = 230 V, Vo = 180
but chopping period
blocking period of SCR
Toff = T – Ton = 0.2 – 0.156 = 0.04347 msec = 43.47 μsec
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In chopper circuit the average value of output voltage is controlled by time ratio control (TRC) method. The chopper is operated at a frequency of 5kHz on a 230 V d.c. supply. If the load voltage is 180 V, then the blocking period of thyristor in each cycle is___(in μsec)Correct answer is between '43,44'. Can you explain this answer?
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In chopper circuit the average value of output voltage is controlled by time ratio control (TRC) method. The chopper is operated at a frequency of 5kHz on a 230 V d.c. supply. If the load voltage is 180 V, then the blocking period of thyristor in each cycle is___(in μsec)Correct answer is between '43,44'. 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 chopper circuit the average value of output voltage is controlled by time ratio control (TRC) method. The chopper is operated at a frequency of 5kHz on a 230 V d.c. supply. If the load voltage is 180 V, then the blocking period of thyristor in each cycle is___(in μsec)Correct answer is between '43,44'. 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 chopper circuit the average value of output voltage is controlled by time ratio control (TRC) method. The chopper is operated at a frequency of 5kHz on a 230 V d.c. supply. If the load voltage is 180 V, then the blocking period of thyristor in each cycle is___(in μsec)Correct answer is between '43,44'. Can you explain this answer?.
In chopper circuit the average value of output voltage is controlled by time ratio control (TRC) method. The chopper is operated at a frequency of 5kHz on a 230 V d.c. supply. If the load voltage is 180 V, then the blocking period of thyristor in each cycle is___(in μsec)Correct answer is between '43,44'. 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 chopper circuit the average value of output voltage is controlled by time ratio control (TRC) method. The chopper is operated at a frequency of 5kHz on a 230 V d.c. supply. If the load voltage is 180 V, then the blocking period of thyristor in each cycle is___(in μsec)Correct answer is between '43,44'. 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 chopper circuit the average value of output voltage is controlled by time ratio control (TRC) method. The chopper is operated at a frequency of 5kHz on a 230 V d.c. supply. If the load voltage is 180 V, then the blocking period of thyristor in each cycle is___(in μsec)Correct answer is between '43,44'. Can you explain this answer?.
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