Complex AC Objective Questions and Answers

92. In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of

93. In a series L-C circuit at the resonant frequency the

94. In a R-L-C series circuit if voltage V across the cirucit is reduced to half the current I will change to

95. The time constant of a series R-C circuit is given by

96. If resistance is 20f-a and inductance is 2H in a R-L series circuit, then time constant of this circuit will be

97. Which of the following coil will have large resonant frequency?

98. If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equationrepresents this wave?

Electrical Engineering Objective Questions { Complex AC }