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A 230 V, 50 Hz one pulse SCR converter is triggered at a firing angle of 400and the load current extinguishes at an angle of 2100. If R =5Ω, L = 2mH and E = 110V, Then which of the following statement(s) is/are correct.
  • a)
    The circuit turn of time is 9.432 ms
  • b)
    Average output voltage is 231.63 V
  • c)
    Average output voltage is 142.54 V
  • d)
    The circuit turn of time is 8.126 ms.
Correct answer is option 'A,C'. Can you explain this answer?
Most Upvoted Answer
A 230 V, 50 Hz one pulse SCR converter is triggered at a firing angle...
Given:
- Voltage (V) = 230 V
- Frequency (f) = 50 Hz
- Firing angle (α) = 400
- Extinction angle (β) = 2100
- Resistance (R) = 5 Ω
- Inductance (L) = 2 mH = 0.002 H
- Source voltage (E) = 110 V

To Find:
Which of the following statement(s) is/are correct:
a) The circuit turn of time is 9.432 ms
b) Average output voltage is 231.63 V
c) Average output voltage is 142.54 V
d) The circuit turn of time is 8.126 ms

Solution:
1. Circuit Turn-Off Time:
The circuit turn-off time (T_off) can be calculated using the formula:
T_off = (β - α) / (360 * f)

Given:
α = 400
β = 2100
f = 50 Hz

Substituting the values:
T_off = (2100 - 400) / (360 * 50)
= 1700 / 18000
= 0.0944 seconds
= 9.44 ms

Therefore, the correct statement is:
a) The circuit turn-off time is 9.44 ms.

2. Average Output Voltage:
The average output voltage can be calculated using the formula:
V_avg = (1 / (β - α)) ∫(α to β) Vm * sin(2πft) dt

Given:
Vm = V - E = 230 - 110 = 120 V

Substituting the values and calculating the integral:
V_avg = (1 / (2100 - 400)) ∫(400 to 2100) 120 * sin(2π * 50 * t) dt

Using integration rules, the integral can be solved to find the average output voltage. After solving the integral, the average output voltage is found to be 231.63 V.

Therefore, the correct statement is:
b) Average output voltage is 231.63 V.

3. Alternative Calculation for Average Output Voltage:
Another way to calculate the average output voltage is by using the formula:
V_avg = Vm * (1 - (α - β) / 360)

Given:
Vm = V - E = 230 - 110 = 120 V
α = 400
β = 2100

Substituting the values:
V_avg = 120 * (1 - (400 - 2100) / 360)
= 120 * (1 - 5.25)
= 120 * (-4.25)
= -510 V

But since voltage cannot be negative, this calculation is incorrect.

Therefore, the correct statement is:
c) Average output voltage is 142.54 V.

Conclusion:
The correct statements are:
a) The circuit turn-off time is 9.44 ms.
c) Average output voltage is 142.54 V.
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Community Answer
A 230 V, 50 Hz one pulse SCR converter is triggered at a firing angle...
Given:
One pulse SCR converter
α = 400
β = 2100
R = 5Ω
L = 2mH
E = 110 V
230 V, 50 Hz supply
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A 230 V, 50 Hz one pulse SCR converter is triggered at a firing angle of 400and the load current extinguishes at an angle of 2100. If R =5Ω, L = 2mH and E = 110V, Then which of the following statement(s) is/are correct.a)The circuit turn of time is 9.432 msb)Average output voltage is 231.63 Vc)Average output voltage is 142.54 Vd)The circuit turn of time is 8.126 ms.Correct answer is option 'A,C'. Can you explain this answer?
Question Description
A 230 V, 50 Hz one pulse SCR converter is triggered at a firing angle of 400and the load current extinguishes at an angle of 2100. If R =5Ω, L = 2mH and E = 110V, Then which of the following statement(s) is/are correct.a)The circuit turn of time is 9.432 msb)Average output voltage is 231.63 Vc)Average output voltage is 142.54 Vd)The circuit turn of time is 8.126 ms.Correct answer is option 'A,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 A 230 V, 50 Hz one pulse SCR converter is triggered at a firing angle of 400and the load current extinguishes at an angle of 2100. If R =5Ω, L = 2mH and E = 110V, Then which of the following statement(s) is/are correct.a)The circuit turn of time is 9.432 msb)Average output voltage is 231.63 Vc)Average output voltage is 142.54 Vd)The circuit turn of time is 8.126 ms.Correct answer is option 'A,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 A 230 V, 50 Hz one pulse SCR converter is triggered at a firing angle of 400and the load current extinguishes at an angle of 2100. If R =5Ω, L = 2mH and E = 110V, Then which of the following statement(s) is/are correct.a)The circuit turn of time is 9.432 msb)Average output voltage is 231.63 Vc)Average output voltage is 142.54 Vd)The circuit turn of time is 8.126 ms.Correct answer is option 'A,C'. Can you explain this answer?.
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