AC Fundamentals, Circuit and Circuit Theory The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees. 30 45 60 90 30 45 60 90 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In each of the three coils of a three phase generator, an alternating voltage having an r.m.s. value of 220 V is induced. Which of the following values is indicated by the voltmeters? 220/v3 V 220 V 220 v3 V None of these 220/v3 V 220 V 220 v3 V None of these ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In the case of an unsymmetrical alternating current the average value must always be taken over The half cycle The quarter cycle Unsymmetrical part of the wave form The whole cycle The half cycle The quarter cycle Unsymmetrical part of the wave form The whole cycle ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Wire-wound resistors are unsuitable for use at high frequencies because they Exhibit unwanted inductive and capacitive effects Are likely to melt under excessive eddy current heat Consume more power Create more electrical noise Exhibit unwanted inductive and capacitive effects Are likely to melt under excessive eddy current heat Consume more power Create more electrical noise ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Which of the following coil will have large resonant frequency? A coil with large distributed capacitance A coil with low distributed capacitance A coil with low resistance A coil with large resistance A coil with large distributed capacitance A coil with low distributed capacitance A coil with low resistance A coil with large resistance ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Poor power factor 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 Results in more power losses in the electrical system ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS