AC Fundamentals, Circuit and Circuit Theory In a sine wave the slope is constant Between 0° and 90° Between 180° and 270° Between 90° and 180° No where Between 0° and 90° Between 180° and 270° Between 90° and 180° No where ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that None of the listed here Both waves must have identical peak values Both waves must have zero value at the same time Both waves must have same frequency None of the listed here Both waves must have identical peak values Both waves must have zero value at the same time Both waves must have same frequency ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory For a sine wave with peak value Imax the r.m.s. value is 0.9 0.5 Imax 0.707 1.414 Imax 0.9 0.5 Imax 0.707 1.414 Imax ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Time constant of a circuit is the time in seconds taken after the application of voltage to each 63% of maximum value 50% of maximum value 90% of the maximum value 25% of maximum value 63% of maximum value 50% of maximum value 90% of the maximum value 25% of maximum value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Two waves of the same frequency have opposite phase when the phase angle between them is 180° 90° 0° 360° 180° 90° 0° 360° 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 Q. If frequency is increased to 100 Hz, reactance becomes __________ ohms. 10 15 5 2.5 10 15 5 2.5 ANSWER DOWNLOAD EXAMIANS APP
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