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A three-phase full converter supplied from a 230 V source is working as a line commutated inverter. The load consists of RLE type with R = 5 Ω, E = 200 V and L = 1 mH. A continues current of 10 A is flowing through the load, find the value of the firing angle delay.
- a)119°
- b)127°
- c)156°
- d)143°
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A three-phase full converter supplied from a 230 V source is working a...
Vo = 200 – 10×5 = 150V as the circuit is operating as an inverter Vo = -150V
Now, Vo = (3Vml/π) cos α
α = cos-1(-150π/3√2×230) = 118.88°.
Now, Vo = (3Vml/π) cos α
α = cos-1(-150π/3√2×230) = 118.88°.
Most Upvoted Answer
A three-phase full converter supplied from a 230 V source is working a...
To find the value of the firing angle delay, we need to calculate the firing angle delay angle (α) using the formula:
α = tan^(-1)((E/V - I*R) / (I*X))
where:
E = 200 V (load voltage)
V = 230 V (source voltage)
I = 10 A (load current)
R = 5 Ω (load resistance)
X = ωL = ω * 1 mH = 2πfL = 2π(50)(0.001) = 0.314 Ω (load reactance)
Plugging in the values, we get:
α = tan^(-1)((200/230 - 10*5) / (10*0.314))
= tan^(-1)(-0.304)
≈ -17.62°
Since the firing angle delay cannot be negative, we take the positive value of the angle:
α ≈ 17.62°
Therefore, the value of the firing angle delay is approximately 17.62°.
α = tan^(-1)((E/V - I*R) / (I*X))
where:
E = 200 V (load voltage)
V = 230 V (source voltage)
I = 10 A (load current)
R = 5 Ω (load resistance)
X = ωL = ω * 1 mH = 2πfL = 2π(50)(0.001) = 0.314 Ω (load reactance)
Plugging in the values, we get:
α = tan^(-1)((200/230 - 10*5) / (10*0.314))
= tan^(-1)(-0.304)
≈ -17.62°
Since the firing angle delay cannot be negative, we take the positive value of the angle:
α ≈ 17.62°
Therefore, the value of the firing angle delay is approximately 17.62°.
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A three-phase full converter supplied from a 230 V source is working as a line commutated inverter. The load consists of RLE type with R = 5 Ω, E = 200 V and L = 1 mH. A continues current of 10 A is flowing through the load, find the value of the firing angle delay.a)119°b)127°c)156°d)143°Correct answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2026 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 three-phase full converter supplied from a 230 V source is working as a line commutated inverter. The load consists of RLE type with R = 5 Ω, E = 200 V and L = 1 mH. A continues current of 10 A is flowing through the load, find the value of the firing angle delay.a)119°b)127°c)156°d)143°Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A three-phase full converter supplied from a 230 V source is working as a line commutated inverter. The load consists of RLE type with R = 5 Ω, E = 200 V and L = 1 mH. A continues current of 10 A is flowing through the load, find the value of the firing angle delay.a)119°b)127°c)156°d)143°Correct answer is option 'A'. Can you explain this answer?.
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