AC Fundamentals, Circuit and Circuit Theory A phasor is A line representing the magnitude and direction of an alternating quantity An instrument used for measuring phases of an unbalanced 3-phase load A colored tag or band for distinction between different phases of a 3-phase supply A line which represents the magnitude and phase of an alternating quantity A line representing the magnitude and direction of an alternating quantity An instrument used for measuring phases of an unbalanced 3-phase load A colored tag or band for distinction between different phases of a 3-phase supply A line which represents the magnitude and phase of an alternating quantity ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a highly capacitive circuit the 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 Reactive power is more than the apparent power Actual power is more than its reactive power Reactive power is more than the actual power ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The period of a sine wave is ___________ seconds. Its frequency is 20 Hz 40 Hz 30 Hz 50 Hz 20 Hz 40 Hz 30 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a sine wave the slope is constant Between 0° and 90° No where Between 90° and 180° Between 180° and 270° Between 0° and 90° No where Between 90° and 180° Between 180° and 270° ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Pure inductive circuit takes power from the A.C. line when Both applied voltage and current decrease Applied voltage increases but current decreases Both applied voltage and current increase Applied voltage decreases but current increases Both applied voltage and current decrease Applied voltage increases but current decreases Both applied voltage and current increase Applied voltage decreases but current increases 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 42.42 sin 314 t 60 sin 25 t 30 sin 50 t 84.84 sin 25 t 42.42 sin 314 t 60 sin 25 t 30 sin 50 t ANSWER DOWNLOAD EXAMIANS APP
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