AC Fundamentals, Circuit and Circuit Theory The power consumed in a circuit element will be least when the phase difference between the current and voltage is 30° 60° 180° 90° 30° 60° 180° 90° 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. 15 10 25 5 15 10 25 5 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In AC. circuits, laminated iron is invariably used in order to Make assembly cheap and easier Reduce circuit permeability Reduce eddy current loss Increase heat radiation Make assembly cheap and easier Reduce circuit permeability Reduce eddy current loss Increase heat radiation ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a R-L-C circuit All of the listed here Exchange of power takes place between inductor and supply line Exchange of power takes place between capacitor and supply line Power is consumed in resistance and is equal to IR All of the listed here Exchange of power takes place between inductor and supply line Exchange of power takes place between capacitor and supply line Power is consumed in resistance and is equal to IR ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Which of the following statements pertains to resistors only? Can act as energy storage devices Can dissipate considerable amount of power Oppose sudden changes in voltage Connecting them in parallel increases the total value Can act as energy storage devices Can dissipate considerable amount of power Oppose sudden changes in voltage Connecting them in parallel increases the total value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The inductance of a coil can be increased by 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 Decreasing the number of turns ANSWER DOWNLOAD EXAMIANS APP
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