AC Fundamentals, Circuit and Circuit Theory
The frequency of an alternating current is

The number of cycles generated in one minute
The number of waves passing through a point in one second
The number of electrons passing through a point in one second
The speed with which the alternator runs

ANSWER DOWNLOAD EXAMIANS APP

AC Fundamentals, Circuit and Circuit Theory
Time constant of an inductive circuit

Increases with the decrease of inductance and decrease of resistance
Increases with increase of inductance and decrease of resistance
Increases with the increase of inductance and the increase of resistance
Increases with decrease of inductance and increase of resistance

ANSWER DOWNLOAD EXAMIANS APP

AC Fundamentals, Circuit and Circuit Theory
In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value

Will change the impedance at resonance frequency
Will increase the selectivity of the circuit
Will change the resonance frequency
Will change the maximum value of current at resonance

ANSWER DOWNLOAD EXAMIANS APP