AC Fundamentals, Circuit and Circuit Theory The frequency of an alternating current is The number of cycles generated in one minute The speed with which the alternator runs The number of electrons passing through a point in one second The number of waves passing through a point in one second The number of cycles generated in one minute The speed with which the alternator runs The number of electrons passing through a point in one second The number of waves passing through a point in one second ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In any A.C. circuit always Reactive power is more than apparent power Actual power is more than reactive power Apparent power is more than actual power Reactive power is more than actual power Reactive power is more than apparent power Actual power is more than reactive power Apparent power is more than actual power Reactive power is more than actual power ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Poor power factor Results in more power losses in the electrical system Reduces load handling capability of electrical system Overloads alternators, transformers and distribution lines All of the listed here Results in more power losses in the electrical system Reduces load handling capability of electrical system Overloads alternators, transformers and distribution lines All of the listed here ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Power factor of an electrical circuit is equal to all of these R/Z Ratio of useful current to total current Iw/I Cosine of phase angle difference between current and voltage all of these R/Z Ratio of useful current to total current Iw/I Cosine of phase angle difference between current and voltage ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory For the same peak value which of the following wave will 'have the highest r.m.s. value? Triangular wave Sine wave Half wave rectified sine wave Square wave Triangular wave Sine wave Half wave rectified sine wave Square wave ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave? 84.84 sin 25 t 60 sin 25 t 42.42 sin 314 t 30 sin 50 t 84.84 sin 25 t 60 sin 25 t 42.42 sin 314 t 30 sin 50 t ANSWER DOWNLOAD EXAMIANS APP
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