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 The equation of 50 Hz current sine wave having r.m.s. value of 60 A is 84.84 sin 3141 60 sin 25 t 42.42 sin 314 t 60 sin 50 t 84.84 sin 3141 60 sin 25 t 42.42 sin 314 t 60 sin 50 t ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The product of apparent power and cosine of the phase angle between circuit voltage and current is True power Volt-amperes Instantaneous power Reactive power True power Volt-amperes Instantaneous power Reactive power ANSWER DOWNLOAD EXAMIANS APP
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 None of the listed here Both waves must have identical peak values Both waves must have zero value at the same time Both waves must have same frequency None of the listed here Both waves must have identical peak values Both waves must have zero value at the same time ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Inductance of a coil Varies None of the listed here Inversely as the length of the iron path Directly as the cross-sectional area of magnetic core Both of the listed here None of the listed here Inversely as the length of the iron path Directly as the cross-sectional area of magnetic core Both of the listed here ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a series L-C circuit at the resonant frequency the Current is minimum Voltage across C is minimum Impedance is maximum Current is maximum Current is minimum Voltage across C is minimum Impedance is maximum Current is maximum ANSWER DOWNLOAD EXAMIANS APP
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