AC Fundamentals, Circuit and Circuit Theory Time constant of a circuit is the time in seconds taken after the application of voltage to each 90% of the maximum value 63% of maximum value 25% of maximum value 50% of maximum value 90% of the maximum value 63% of maximum value 25% of maximum value 50% of maximum value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The power factor of a D.C. circuit is always Zero Less than unity Unity Greater than unity Zero Less than unity Unity Greater than unity ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Magnitude of current at resonance in R-L-C circuit Depends upon the magnitude of L Depends upon the magnitude of R Depends upon the magnitude of R, Land C Depends upon the magnitude of C Depends upon the magnitude of L Depends upon the magnitude of R Depends upon the magnitude of R, Land C Depends upon the magnitude of C ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory For a sine wave with peak value Imax the r.m.s. value is 1.414 Imax 0.9 0.707 0.5 Imax 1.414 Imax 0.9 0.707 0.5 Imax ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Ohm is unit of all of the following except Capacitive reactance Resistance Capacitance Inductive reactance Capacitive reactance Resistance Capacitance Inductive reactance ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The inductance of a coil can be increased by Decreasing the number of turns Choosing core material having high relative permeability Decreasing the diameter of the former Increasing core length Decreasing the number of turns Choosing core material having high relative permeability Decreasing the diameter of the former Increasing core length ANSWER DOWNLOAD EXAMIANS APP
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