GATE EC 2016 Set 1 — Question 43
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Analog Circuits → Circuit Fundamentals & Theorems → HW, FW & Bridge Rectifiers
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Question
An AC voltage source volts is applied to the following network. Assume that , and , and that the diode is ideal.
RMS current (in mA) through the diode is ________
Correct answer
0.9 to 1.1
Solution
The ideal diode conducts only in the positive half-cycles, so the current is a half-wave rectified sinusoid with peak and RMS value .Equivalent resistance between a and h. From the figure: –, –, – are ; –, –, –, –, –, – are ; –, –, – are . The network is symmetric under exchanging and , so are at one potential and at another:
- : three in parallel
- : six in parallel
- : three in parallel
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