The horizontal deflection plates of a CRO receive _____________ to properly display a signal waveform?
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Answer: C. Sawtooth wave
Explanation
Horizontal deflection plates require a linear time base voltage to sweep the electron beam evenly. A sawtooth waveform increases voltage linearly with time and then drops back instantly. This constant horizontal sweep speed allows proper visual representation of signal waveforms on screen. Cathode-ray oscilloscopes use electrostatic deflection plates to steer an electron beam across a phosphor screen. The sawtooth generator controls horizontal time scaling for analyzing complex electrical waveforms. Vertical plates receive the input signal while horizontal plates drive the linear time base.
Oscilloscope operators adjust time base controls to change the frequency of the internal sawtooth generator. Troubleshooting electronic circuits requires accurate waveform display enabled by proper horizontal sweeping. Signal analysis in laboratories depends on stable sawtooth synchronization for steady visual displays. Sinusoidal waves on horizontal plates would distort the display and fail to provide linear time sweeping. Cosine waves are unsuitable because they lack the necessary linear ramp required for oscilloscope time bases. None of the above is incorrect because sawtooth waves are explicitly required for horizontal sweeps.
- Subject
- Engineering
- Category
- Electrical Engineering
- Topic
- —
- Difficulty
- medium
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