AC Circuits, Ge...

At resonance the impedance is:

Peak value of AC current is 4√2, RMS current is :

For a series RLC circuit driven by voltage v = v_msinωt, the current is given by i = i_m sin(ωt + φ) and the power factor = __________

An RLC series circuit is supplied by an alternating voltage source of \(200\sin 100\pi t\) V. The circuit parameters are as follows

\(R = 100\:\Omega ,\;L = \frac{2}{\pi }\:H,\;C = \frac{{100}}{\pi }\:\mu F.\)

In wattless current phase difference between current and voltage is :

The frequency of an alternating current is 50 Hz. In how much time does it reverse its direction?

The ratio of the number of turns in primary and secondary coils of transformer is 1: 20. The ratio of the currents in the primary and the secondary coils will be

An AC generator consists of a coil of 800 turns and a cross-sectional area of 2.5 m². The coil is placed in a uniform magnetic field of 0.05 T and it is rotated with an angular speed of 50 rad/sec. If the resistance of the coil is 200 Ω, then find the maximum current produced by the generator:

In a series LCR circuit the voltage across the resistance, capacitance and inductor is 10 V each. If the capacitor is short circuited, the voltage across the inductor will be

An RLC circuit has a resonance frequency of 160 kHz and a Q-factor of 100. Its bandwidth is