AC Fundamentals, Circuit and Circuit Theory The form factor is the ratio of r.m.s. value to average value Average value to r.m.s. value None of these Peak value to r.m.s. value r.m.s. value to average value Average value to r.m.s. value None of these Peak value to r.m.s. value 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 5 15 2.5 10 5 15 2.5 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 The inductance of a coil can be increased by Decreasing the diameter of the former Decreasing the number of turns Increasing core length Choosing core material having high relative permeability Decreasing the diameter of the former Decreasing the number of turns Increasing core length Choosing core material having high relative permeability ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will Be doubled Be reduced by half Be reduced to one fourth Be four times at high Be doubled Be reduced by half Be reduced to one fourth Be four times at high ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Which of the following refers to a parallel circuit? The voltage across element is in proportion to it's resistance value The equivalent resistance is greater than any one of the resistors The current through any one element is less than the source current The current through each element is same The voltage across element is in proportion to it's resistance value The equivalent resistance is greater than any one of the resistors The current through any one element is less than the source current The current through each element is same ANSWER DOWNLOAD EXAMIANS APP
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