TIME PERIOD; i.e.,\({f_{DC}} = \frac{1}{T}\mathop \smallint \nolimits_o^T f\left( t \right)dt\)RMS value 'or' the effective value of an alternating quantity is calculated as:\({V_{rms}} = \sqrt{\frac{1}{T}\mathop \smallint \limits_0^T {v^2}\left( t \right)dt} \)Calculation:Average value,\(\BEGIN{array}{l} = \frac{1}{{20}}\left[ {\mathop \smallint \limits_0^{10} tdt - \mathop \smallint \limits_{10}^{12} 5dt + \mathop \smallint \limits_{12}^{20} 5dt} \right]\\ = {\rm{ }}4\ {\rm{ }}V \end{array}\)

"> TIME PERIOD; i.e.,\({f_{DC}} = \frac{1}{T}\mathop \smallint \nolimits_o^T f\left( t \right)dt\)RMS value 'or' the effective value of an alternating quantity is calculated as:\({V_{rms}} = \sqrt{\frac{1}{T}\mathop \smallint \limits_0^T {v^2}\left( t \right)dt} \)Calculation:Average value,\(\BEGIN{array}{l} = \frac{1}{{20}}\left[ {\mathop \smallint \limits_0^{10} tdt - \mathop \smallint \limits_{10}^{12} 5dt + \mathop \smallint \limits_{12}^{20} 5dt} \right]\\ = {\rm{ }}4\ {\rm{ }}V \end{array}\)

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A periodic voltage waveform observed on an oscilloscope across a load is shown. A permanent magnet moving coil (PMMC) meter connected across the same load reads

Electrical Engineering Indicating Instruments in Electrical Engineering . 8 months ago

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Concept:The DC value or the average value of a waveform f(t) is given by the Area under the curve for one complete TIME PERIOD; i.e.,\({f_{DC}} = \frac{1}{T}\mathop \smallint \nolimits_o^T f\left( t \right)dt\)RMS value 'or' the effective value of an alternating quantity is calculated as:\({V_{rms}} = \sqrt{\frac{1}{T}\mathop \smallint \limits_0^T {v^2}\left( t \right)dt} \)Calculation:Average value,\(\BEGIN{array}{l} = \frac{1}{{20}}\left[ {\mathop \smallint \limits_0^{10} tdt - \mathop \smallint \limits_{10}^{12} 5dt + \mathop \smallint \limits_{12}^{20} 5dt} \right]\\ = {\rm{ }}4\ {\rm{ }}V \end{array}\)

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Posted on 03 Nov 2024, this text provides information on Electrical Engineering related to Indicating Instruments in Electrical Engineering. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

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