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. 10 15 5 25 10 15 5 25 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Which of the following coil will have large resonant frequency? A coil with low resistance A coil with low distributed capacitance A coil with large distributed capacitance A coil with large resistance A coil with low resistance A coil with low distributed capacitance A coil with large distributed capacitance A coil with large resistance ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In the case of an unsymmetrical alternating current the average value must always be taken over Unsymmetrical part of the wave form The half cycle The whole cycle The quarter cycle Unsymmetrical part of the wave form The half cycle The whole cycle The quarter cycle ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of L only L or C R only C only L only L or C R only C only ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value? 45° 90° 30° 180° 45° 90° 30° 180° ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The equation of 50 Hz current sine wave having r.m.s. value of 60 A is 84.84 sin 3141 42.42 sin 314 t 60 sin 25 t 60 sin 50 t 84.84 sin 3141 42.42 sin 314 t 60 sin 25 t 60 sin 50 t ANSWER DOWNLOAD EXAMIANS APP
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