 
			 
			MCQOPTIONS
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				| 1. | When does a digital phase detector can be used, where fo->output frequency, fs->input frequency. | 
| A. | Both f<sub>o</sub> & f<sub>s</sub> signals should be square wave | 
| B. | f<sub>o</sub> should be square wave & f<sub>s</sub> can be any non-sinusoidal wave | 
| C. | f<sub>s</sub> should be square wave & f<sub>o</sub> can be any non-sinusoidal wave | 
| D. | Both f<sub>o</sub> & f<sub>s</sub> can be any non-sinusoidal wave | 
| Answer» B. f<sub>o</sub> should be square wave & f<sub>s</sub> can be any non-sinusoidal wave | |