MCQOPTIONS
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| 1. |
A signal represented by x(t) =5cos 400 t is sampled at a rate 300 samples/sec. The resulting samples are passed through an ideal low pass filter of cut-off frequency 150 Hz. Which of the following will be contained in the output of the LPF? |
| A. | t100 Hz |
| B. | t100 Hz, 150 Hz |
| C. | t50 Hz, 100 Hz |
| D. | t50 Hz, 100 Hz, 150 Hz |
| Answer» B. t100 Hz, 150 Hz | |