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

View solution

Q. In series as well as parallel resonant circuits, increasing the value of resistance would lead to

View solution

Q. The polynomial P (s) = (s - 1) (s² + 1) (s + 2) (s + 3) is

View solution

Q. Assertion (A): In drawing an electric circuit analogous to a mechanical circuit, spring is replaced by capacitance.

Reason (R): The behaviour of a spring and capacitor are similar.

View solution

Q. Two coils having equal resistance but different inductances are connected in series. The time constant of the series combination is

View solution

Q. Kirchoff's laws are applicable to

View solution

Q. In solid dielectrics the rate of deterioration doubles for every 10-12°C rise in temperature.

View solution

Q. An RLC series circuit is excited by a step voltage E. The circuit current at t = 0 is

View solution

Q. Consider the following: Energy storage capability of basic passive elements is due to the fact that

1. resistance dissipates energy
2. capacitance stores energy
3. inductance dissipates energy

Which of the above is/are correct?

View solution

Q. In an ac circuit that delivers constant power at varying p.f., the current is

View solution

Q. The parameter A of a two port network is equal to

View solution

Q. The relation AD - BC = 1 where A, B, C, D are transmission parameters of a network is valid for

View solution

Q. A network N is dual of network N if

View solution

Q. A dielectric should have poor heat conductivity.

View solution

Q. The ability of a radio receiver to discriminate between different input signals and to accept only one definite signal is called its

View solution

Q. Assertion (A): A graph can have many trees.

Reason (R): The number of tree branches is equal to number of nodes.

View solution

Q. Electric shock is

View solution

Q. The first critical frequency nearest the origin of the complex frequency plane for an RL driving point impedance will be

View solution

Q. For a reactance function H(s)

View solution

Q. A sinusoidal current having peak value of 7.07 A is superimposed on dc of 5A. If a hot-wire ammeter is used to measure the combined current in the circuit, it will indicate __________ ampere.

View solution