Quiz on Power Electronics
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1.In single pulse modulation of PWM inverters, third harmonic can be eliminated if pulse width is equal to
1 point
2. In multiple pulse modulation used in PWM inverters, the amplitudes of reference square wave and triangular carrier wave are respectively 1V and 2V. For generating 5 pulses per half cycle, the pulse width should be
1 point
3. In a CSI, if frequency of output voltage is f Hz, then frequency of voltage input to CSI is
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4. In an inverter with fundamental output frequency of 50 Hz, if third harmonic is eliminated then frequencies of other components in the output voltage wave, in Hz, would be
1 point
5. A single phase CSI has capacitor C as the load. For a constant source current, the voltage across the capacitor is
1 point
6. A VSI will have better performance if its
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7. Simplest method of eliminating third harmonic from the output voltage waveform of a single phase bridge inverter is to use
1 point
8. A PWM switching scheme is used in single phase inverters to
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9. Output voltage of a single phase bridge inverter, fed from a fixed dc source, is fixed by
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10. A single phase inverter has square wave output voltage. What is the percentage of the fifth harmonic component in relation to the fundamental component?
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