# Electronics and Communication Engineering - Power Electronics - Discussion

### Discussion :: Power Electronics - Section 1 (Q.No.2)

2.

In the below figure the average load current is 15 A. The rms value of transformer secondary current is

 [A]. 15 A [B]. 10.61 A [C]. 7.5 A [D]. 14.14 A

Answer: Option B

Explanation:

RMS secondary current = = 15/1.414 = 10.608 A.

 Muruganandam said: (Jun 27, 2015) How can the RMS will be lower than average?

 Pande said: (Aug 6, 2015) How it can obtain?

 Sachin said: (Dec 15, 2015) Please, elaborate the solution.

 Abhishek said: (Apr 2, 2017) No, it's not correct. As RMS value for full wave rectifier is = Imax/1.41. And here Imax was not given, instead of it, Avg load current was given which is not same as Imax. So, Irms is 1.11 * Iavg = 1.11* 15 = 16.65A. Can anyone agree with me?

 Priya said: (Jun 29, 2017) But this is thyristor not diode.

 Lopamudra said: (Sep 28, 2017) Yeah, the thyristor is a controlled rectifier only. That means diode.

 Kiran said: (Apr 20, 2020) Explain the correct answer.

 Renjith V R said: (Sep 10, 2020) 15 A is load current, So It will be the answer.

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