Gmdss_e3 : Element 3 - 191/605
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| What is the definition of a phase-locked loop (PLL) circuit? |
| A) A servo loop consisting of a ratio detector, reactance modulator, and voltage-controlled oscillator. |
| B) A circuit also known as a monostable multivibrator. |
| C) A circuit consisting of a precision push-pull amplifier with a differential input. |
| D) A servo loop consisting of a phase detector, a low-pass filter and voltage-controlled oscillator. |
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