The frequency of the 7th harmonic for the fundamental frequency of 50 Hz is:
350 Hz
Understanding Harmonic Frequency Calculation
This question asks us to find the frequency of a specific harmonic, given the fundamental frequency. Harmonics are integer multiples of the fundamental frequency.
Given Information:
- Fundamental Frequency ($f_1$): 50 Hz
- Harmonic Number ($n$): 7
Formula for Harmonic Frequency:
The frequency of the $n^{th}$ harmonic ($f_n$) is calculated by multiplying the fundamental frequency ($f_1$) by the harmonic number ($n$). The formula is:
$$ f_n = n \times f_1 $$
Calculation:
To find the frequency of the 7th harmonic, we substitute the given values into the formula:
$$ f_7 = 7 \times 50 \, \text{Hz} $$
$$ f_7 = 350 \, \text{Hz} $$
Conclusion:
Therefore, the frequency of the 7th harmonic for a fundamental frequency of 50 Hz is 350 Hz. This matches option 3.
Important Questions from Phase Controlled Rectifiers
- Which of the following is control element in Silicon Controlled Resistor (SCR)?
A 240 V single-phase AC supply is fed to a load resistor of 100 Ω through a thyristor. If the thyristor is fired at 90°, what is the power consumed by the load?
The maximum firing angle that can be obtained by a pure resistive trigger circuit used in phase control circuit is:
In a 3-phase converter circuit, during commutation when one SCR in one phase is turned on, turning of an SCR in another phase results is:
- Which mode is described when the anode is assigned a positive voltage, the gate is assigned a zero voltage disconnected and the cathode is assigned a negative voltage?
