AC Fundamentals, Circuit and Circuit Theory The power factor of a D.C. circuit is always Unity Less than unity Zero Greater than unity Unity Less than unity Zero Greater than unity ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will Be doubled Be four times as high Be reduced by half Be reduced to one fourth Be doubled Be four times as high Be reduced by half Be reduced to one fourth 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 V 220 v3 V 220/v3 V None of these 220 V 220 v3 V 220/v3 V None of these ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The time constant of a series R-C circuit is given by RC2 RC R/C R2C RC2 RC R/C R2C ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory At very low frequencies a series R-C circuit behaves as almost purely None of the listed here Resistive Inductive Capacitive None of the listed here Resistive Inductive Capacitive ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The r.m.s. value and mean value is the same in the case of Square wave Triangular wave Half wave rectified sine wave Sine wave Square wave Triangular wave Half wave rectified sine wave Sine wave ANSWER DOWNLOAD EXAMIANS APP
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