AC Fundamentals, Circuit and Circuit Theory The power is measured in terms of decibels in case of Electronic equipment Transformers Current transformers Auto transformers Electronic equipment Transformers Current transformers Auto transformers 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. 15 10 5 2.5 15 10 5 2.5 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Which of the following statements pertains to resistors only? Can dissipate considerable amount of power Can act as energy storage devices Oppose sudden changes in voltage Connecting them in parallel increases the total value Can dissipate considerable amount of power Can act as energy storage devices Oppose sudden changes in voltage Connecting them in parallel increases the total value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The r.m.s. value and mean value is the same in the case of Half wave rectified sine wave Triangular wave Square wave Sine wave Half wave rectified sine wave Triangular wave Square wave Sine wave ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The time constant of a series R-C circuit is given by R2C RC2 R/C RC R2C RC2 R/C RC ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a pure inductive circuit The current can lead or lag by 90° The current leads the voltage by 90° The current is in phase with the voltage The current lags behind the voltage by 90° The current can lead or lag by 90° The current leads the voltage by 90° The current is in phase with the voltage The current lags behind the voltage by 90° ANSWER DOWNLOAD EXAMIANS APP
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