AC Fundamentals, Circuit and Circuit Theory The inductance of a coil can be increased by Choosing core material having high relative permeability Decreasing the diameter of the former Decreasing the number of turns Increasing core length Choosing core material having high relative permeability Decreasing the diameter of the former Decreasing the number of turns Increasing core length ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Form Factor is the ratio of r.m.s. value/average value r.m.s. value/peak value Average value/r.m.s. value Average value/peak value r.m.s. value/average value r.m.s. value/peak value Average value/r.m.s. value Average value/peak value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces The same heat as produced by A.C. when flowing through the same circuit The more heat than produced by A.C. when flowing through the same circuit None of these The less heat than produced by A.C. flowing through the same circuit The same heat as produced by A.C. when flowing through the same circuit The more heat than produced by A.C. when flowing through the same circuit None of these The less heat than produced by A.C. flowing through the same circuit ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that Both waves must have identical peak values Both waves must have zero value at the same time None of these Both waves must have same frequency Both waves must have identical peak values Both waves must have zero value at the same time None of these Both waves must have same frequency ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The power is measured in terms of decibels in case of Transformers Current transformers Electronic equipment Auto transformers Transformers Current transformers Electronic equipment Auto transformers ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Pure inductive circuit takes power from the A.C. line when 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 Both applied voltage and current increase Both applied voltage and current decrease ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS