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A periodic rectangular signal, x(t) has the wave form shown in figure below. Frequency of the fifth harmonic of its spectrum is _____ Hz
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- 125 Hz.
- 1250 Hz.
- 1.250 Hz.
- 12.50 Hz.
Correct Option: B
Signal shown has time period,
T = 4ms.
| ∴ ƒ = | = 250 Hz | |
| 4 |
This is the fundamental frequency. Fifth harmonic frequency,
ƒs = 250 × 5 = 1250 Hz.
