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 15 10 5 25 15 10 5 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Poor power factor Reduces load handling capability of electrical system Results in more power losses in the electrical system All of the listed here Overloads alternators, transformers and distribution lines Reduces load handling capability of electrical system Results in more power losses in the electrical system All of the listed here Overloads alternators, transformers and distribution lines 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 R only C only L only L or C R only C only L only L or C ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a sine wave the slope is constant Between 90° and 180° Between 180° and 270° Between 0° and 90° No where Between 90° and 180° Between 180° and 270° Between 0° and 90° No where ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory For the same peak value, which of the following wave has the least mean value? Square wave Half wave rectified sine wave Sine wave Triangular wave Square wave Half wave rectified sine wave Sine wave Triangular wave ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Skin effect occurs when a conductor carries current at _________ frequencies. Very low High Medium Low Very low High Medium Low ANSWER DOWNLOAD EXAMIANS APP
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