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 10 15 2.5 5 10 15 2.5 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The frequency of domestic power supply in India is 150 Hz 200 Hz 250 Hz 50 Hz 150 Hz 200 Hz 250 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In AC. circuits, laminated iron is invariably used in order to Reduce eddy current loss Make assembly cheap and easier Increase heat radiation Reduce circuit permeability Reduce eddy current loss Make assembly cheap and easier Increase heat radiation Reduce circuit permeability ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The form factor is the ratio of 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 r.m.s. value to average value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to The capacitive reactance in ohms The size of the capacitor being quite big The current flowing in capacitor The statement is incorrect The capacitive reactance in ohms The size of the capacitor being quite big The current flowing in capacitor The statement is incorrect ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Pure inductive circuit Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle None of the listed here Does not take power at all from a line Consumes some power on average Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle None of the listed here Does not take power at all from a line Consumes some power on average ANSWER DOWNLOAD EXAMIANS APP
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