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1. |
The_sinusoid_x(t)_=6cos10πt_is_sampled_at_the_rate_of_15_Hz_and_applied_to_ideal_rectangular_LPF_with_cut-off_frequency_of_10_Hz,_then_the_output_of_filter_contains:$# |
A. | Only 10π rad/sec component |
B. | 10π rad/sec component |
C. | 10π rad/sec and 20π rad/sec components |
D. | +10π rad/sec and +20π rad/sec components |
Answer» C. 10‚âà√¨‚àö√ë rad/sec and 20‚âà√¨‚àö√ë rad/sec components | |