AC Fundamentals, Circuit and Circuit Theory Poor power factor Overloads alternators, transformers and distribution lines Reduces load handling capability of electrical system Results in more power losses in the electrical system All of the listed here Overloads alternators, transformers and distribution lines Reduces load handling capability of electrical system Results in more power losses in the electrical system All of the listed here ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms, Both resistance and inductance carry equal currents The current through the resistance is less The current through the resistance is more None of the listed here Both resistance and inductance carry equal currents The current through the resistance is less The current through the resistance is more None of the listed here ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 ohm. If frequency is increased to 100 Hz, reactance becomes __________ ohms. 25 15 5 10 25 15 5 10 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to The size of the capacitor being quite big The capacitive reactance in ohms The statement is incorrect The current flowing in capacitor The size of the capacitor being quite big The capacitive reactance in ohms The statement is incorrect The current flowing in capacitor 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 None of these 220 v3 V 220/v3 V 220 V None of these 220 v3 V ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory For a sine wave with peak value Imax the r.m.s. value is 0.707 0.9 1.414 Imax 0.5 Imax 0.707 0.9 1.414 Imax 0.5 Imax ANSWER DOWNLOAD EXAMIANS APP
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