Electronic Devices Exam Prep
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Electronic Devices Exam Prep
Sample questions with model answers
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With circuit diagram, explain the working of a full-wave centre-tapped rectifier. Also draw the waveform.
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A full-wave centre-tapped rectifier uses two diodes and provides full-wave rectification.
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With circuit diagram, explain the working of a half-wave rectifier. Also draw the waveforms.
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A half-wave rectifier allows current to pass during one half-cycle of AC input.
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Describe the operation of a JFET with the help of its output and transfer characteristics.
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JFET operates by controlling current flow through a channel with voltage applied to the gate.
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A full-wave rectifier uses two diodes having internal resistance of $20\Omega$ each. The transformer RMS secondary voltage from centre to each end is 50V. Find $I_m$, $I_{dc}$, $I_{rms}$ and $V_{dc}$, if the load resistance is $980\Omega$.
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Calculate $I_m$, $I_{dc}$, $I_{rms}$, and $V_{dc}$ using the given values.
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