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. 5 2.5 10 15 5 2.5 10 15 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Power factor of the system is kept high To reduce line losses To maximize the utilization of the capacities of generators, lines and transformers To reduce voltage regulation of the line All of the listed here To reduce line losses To maximize the utilization of the capacities of generators, lines and transformers To reduce voltage regulation of the line All of the listed here ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Which of the following circuit component opposes the change in the circuit voltage ? Conductance Resistance Inductance Capacitance Conductance Resistance Inductance Capacitance ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Inductance of a coil Varies Directly as the cross-sectional area of magnetic core Inversely as the length of the iron path None of the listed here Both of the listed here Directly as the cross-sectional area of magnetic core Inversely as the length of the iron path None of the listed here Both of the listed here 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? 30° 180° 45° 90° 30° 180° 45° 90° ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The peak value of a sine wave is 200 V. Its average value is 127.4 V 141.4 V 282.8 V 200 V 127.4 V 141.4 V 282.8 V 200 V ANSWER DOWNLOAD EXAMIANS APP
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