AC Fundamentals, Circuit and Circuit Theory Inductance of coil Decreases with the increase in supply frequency Increases with the increase in supply frequency Becomes zero with the increase in supply frequency Is unaffected by the supply frequency Decreases with the increase in supply frequency Increases with the increase in supply frequency Becomes zero with the increase in supply frequency Is unaffected by the supply frequency ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 ohm. If frequency is increased to 100 Hz, reactance becomes __________ ohms. 25 15 5 10 25 15 5 10 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Capacitors for power factor correction are rated in kVA kV kW kVAR kVA kV kW kVAR ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a series L-C circuit at the resonant frequency the Current is minimum Voltage across C is minimum Current is maximum Impedance is maximum Current is minimum Voltage across C is minimum Current is maximum Impedance is maximum ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a parallel R-C circuit, the current always _________the applied voltage. Leads Lags Remains in phase with None of the listed here Leads Lags Remains in phase with None of the listed here ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The time constant of a series R-C circuit is given by RC R/C RC2 R2C RC R/C RC2 R2C ANSWER DOWNLOAD EXAMIANS APP
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