AC Fundamentals, Circuit and Circuit Theory A phasor is A colored tag or band for distinction between different phases of a 3-phase supply A line representing the magnitude and direction of an alternating quantity An instrument used for measuring phases of an unbalanced 3-phase load A line which represents the magnitude and phase of an alternating quantity A colored tag or band for distinction between different phases of a 3-phase supply A line representing the magnitude and direction of an alternating quantity An instrument used for measuring phases of an unbalanced 3-phase load A line which represents the magnitude and phase of an alternating quantity ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The inductance of a coil can be increased by Choosing core material having high relative permeability Decreasing the number of turns Decreasing the diameter of the former Increasing core length Choosing core material having high relative permeability Decreasing the number of turns Decreasing the diameter of the former Increasing core length ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The purpose of a parallel circuit resonance is to magnify Voltage Frequency Current Power Voltage Frequency Current Power ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The time constant of a series R-C circuit is given by RC R2C R/C RC2 RC R2C R/C RC2 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The time constant of the capacitance circuit is defined as the time during which voltage Falls to 36.8% of its final steady value Rises to 63.2% of its final steady value Rises to 38.6% of its final steady value None of these Falls to 36.8% of its final steady value Rises to 63.2% of its final steady value Rises to 38.6% of its final steady value None of these ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Pure inductive circuit takes power from the A.C. line when Both applied voltage and current increase Both applied voltage and current decrease Applied voltage decreases but current increases Applied voltage increases but current decreases Both applied voltage and current increase Both applied voltage and current decrease Applied voltage decreases but current increases Applied voltage increases but current decreases ANSWER DOWNLOAD EXAMIANS APP
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