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. 45 60 30 90 45 60 30 90 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The inductance of a coil can be increased by Increasing core length 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 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The power is measured in terms of decibels in case of Auto transformers Transformers Current transformers Electronic equipment Auto transformers Transformers Current transformers Electronic equipment 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. 10 25 15 5 10 25 15 5 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The power factor of a D.C. circuit is always Unity Zero Less than unity Greater than unity Unity Zero Less than unity Greater than unity ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Which of the following circuit component opposes the change in the circuit voltage ? Inductance Conductance Capacitance Resistance Inductance Conductance Capacitance Resistance ANSWER DOWNLOAD EXAMIANS APP
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