AC Fundamentals, Circuit and Circuit Theory Pure inductive circuit takes power from the A.C. line when Applied voltage increases but current decreases Both applied voltage and current decrease Both applied voltage and current increase Applied voltage decreases but current increases Applied voltage increases but current decreases Both applied voltage and current decrease Both applied voltage and current increase Applied voltage decreases but current increases ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The period of a sine wave is ___________ seconds. Its frequency is 50 Hz 30 Hz 40 Hz 20 Hz 50 Hz 30 Hz 40 Hz 20 Hz ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of Skin effect Capacitive effect between adjacent coil turns Increase in temperature Iron loss in core Skin effect Capacitive effect between adjacent coil turns Increase in temperature Iron loss in core ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Form Factor is the ratio of r.m.s. value/average value Average value/r.m.s. value Average value/peak value r.m.s. value/peak value r.m.s. value/average value Average value/r.m.s. value Average value/peak value r.m.s. value/peak value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Two waves of the same frequency have opposite phase when the phase angle between them is 180° 90° 360° 0° 180° 90° 360° 0° ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value Will change the impedance at resonance frequency Will change the resonance frequency Will change the maximum value of current at resonance Will increase the selectivity of the circuit Will change the impedance at resonance frequency Will change the resonance frequency Will change the maximum value of current at resonance Will increase the selectivity of the circuit ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS