Test: Circuit Theory - Electrical Engineering (EE) MCQ

The condition for the electrical symmetry of the circuit is that

At half power frequencies. the current in the RLC series circuit is:

The 3dB bandwidth of series RLC tuned circuit is 10 KHz and its frequency of resonance is 19000 KHZ. The Q of the circuit is:

In an RLC series circuit, at resonance the impedance is:

The formula for determining the inductance of two coils connected in series aiding is

The formula for the resonant frequency is f =

If f1 and f2 are the 3–dB frequencies and f0 is the frequency of resonance, the the selectivity Q of RLC circuit is given by

A source V has an internal impedance Z_in = (R + jx). When it is connected to load of Z_L + R –jx, the power transferred is

Bandwidth of a series resonant circuit is given by

In an RLC parallel circuit, the impedance at resonance is:

Equivalent resistance of the given network is:

For a pure capacitor, the voltage current relationship is

In the given figure, the Thevenin's equivalent pair (voltage, impedance), as seen at the terminals P – Q, is given by

Two coupled inductors L₁ = 0.2 H and L₂ = 0.45 H have coefficient of coupling k = 0.8. The mutual inductance M is.

Double energy transients occur in the :

The energy stored in a capacitor and inductor is given by

For maximum power transfer, according to maximum power transfer theorem, source impedance

The equivalent inductance of the given circuit between terminals a–b is equal to :

Time constant of a series R–L circuit is given by:

A series resonant circuit has an inductive reactance of 1000W, a capacitive reactance of 1000W and a resistance of 0. 1W. If the resonant frequency is 10 MHz, then the bandwidth of the circuit will be

The resistance 'R' looking into the terminals AB in the circuit shown in the figure will be

In the circuit shown in the figure, the power dissipated in 30W resistor will be maximum if the value of R is