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. 90 60 30 45 90 60 30 45 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of L or C R only C only L only L or C R only C only L only ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The inductance of a coil can be increased by Decreasing the number of turns Increasing core length Decreasing the diameter of the former Choosing core material having high relative permeability Decreasing the number of turns Increasing core length Decreasing the diameter of the former Choosing core material having high relative permeability ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The frequency of an alternating current is The number of waves passing through a point in one second The speed with which the alternator runs The number of cycles generated in one minute The number of electrons passing through a point in one second The number of waves passing through a point in one second The speed with which the alternator runs The number of cycles generated in one minute The number of electrons passing through a point in one second ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The phosphors for which of the following pair are 180° out of phase for VL, VC and VR? VC and VR None of these VL and VR VC and VL VC and VR None of these VL and VR VC and VL 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, The current through the resistance is less Both resistance and inductance carry equal currents The current through the resistance is more None of the listed here The current through the resistance is less Both resistance and inductance carry equal currents The current through the resistance is more None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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