AC Fundamentals, Circuit and Circuit Theory The inductance of a coil can be increased by Decreasing the diameter of the former Increasing core length Choosing core material having high relative permeability Decreasing the number of turns Decreasing the diameter of the former Increasing core length Choosing core material having high relative permeability Decreasing the number of turns 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? 180° 45° 90° 30° 180° 45° 90° 30° ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Pure inductive circuit Consumes some power on average Does not take power at all from a line None of the listed here Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle Consumes some power on average Does not take power at all from a line None of the listed here Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle 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 2.5 5 10 15 2.5 5 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Magnitude of current at resonance in R-L-C circuit Depends upon the magnitude of L Depends upon the magnitude of R, Land C Depends upon the magnitude of R Depends upon the magnitude of C Depends upon the magnitude of L Depends upon the magnitude of R, Land C Depends upon the magnitude of R Depends upon the magnitude of C ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Power factor of the system is kept high To reduce line losses To reduce voltage regulation of the line To maximize the utilization of the capacities of generators, lines and transformers All of the listed here To reduce line losses To reduce voltage regulation of the line To maximize the utilization of the capacities of generators, lines and transformers All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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