AC Fundamentals, Circuit and Circuit Theory The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that Both waves must have same frequency Both waves must have zero value at the same time None of these Both waves must have identical peak values Both waves must have same frequency Both waves must have zero value at the same time None of these Both waves must have identical peak values 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 The frequency of domestic power supply in India is 250 Hz 150 Hz 200 Hz 50 Hz 250 Hz 150 Hz 200 Hz 50 Hz 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? VL and VR VC and VL VC and VR None of these VL and VR VC and VL VC and VR None of these ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is A sinusoid of the same frequency A sinusoid of double the frequency A sinusoid of half the original frequency None of the listed here A sinusoid of the same frequency A sinusoid of double the frequency A sinusoid of half the original frequency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Poor power factor All of the listed here Reduces load handling capability of electrical system Overloads alternators, transformers and distribution lines Results in more power losses in the electrical system All of the listed here Reduces load handling capability of electrical system Overloads alternators, transformers and distribution lines Results in more power losses in the electrical system ANSWER DOWNLOAD EXAMIANS APP
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