AC Fundamentals, Circuit and Circuit Theory The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 ohm. If frequency is increased to 100 Hz, reactance becomes __________ ohms. 25 5 15 10 25 5 15 10 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The phosphors for which of the following pair are 180° out of phase for VL, VC and VR? VC and VR VC and VL None of the listed here VL and VR VC and VR VC and VL None of the listed here VL and VR ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The purpose of a parallel circuit resonance is to magnify Frequency Voltage Current Power Frequency Voltage Current Power ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees. 60 45 90 30 60 45 90 30 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The power is measured in terms of decibels in case of Transformers Current transformers Electronic equipment Auto transformers Transformers Current transformers Electronic equipment Auto transformers ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a highly capacitive circuit the Reactive power is more than the apparent power Actual power is more than its reactive power Reactive power is more than the actual power Apparent power is equal to the actual power Reactive power is more than the apparent power Actual power is more than its reactive power Reactive power is more than the actual power Apparent power is equal to the actual power ANSWER DOWNLOAD EXAMIANS APP
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