Q. The Kirchoff's laws fail in which of the following circuits?

View solution

Q. In any network of linear impedances the current flowing at any point equal to algebric sum of currents caused to flow at that point by each of the emf taken separately with all other emfs reduced to zero. The statement represents.

View solution

Q. If operator 'a' = 1 ∠120° then (1 + a + a²) =

View solution

Q. A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled, then the voltage across each resistor is

View solution

Q. For a series R-L-C circuit tuned at resonant frequency which of the following statements is correct?

View solution

Q. A network has two sources of different frequencies. The only method of analysis which can be used to find current and voltages of different branches is the use of

View solution

Q. In an R-L-C circuit, v(t) = 20 sin (314 t + 5 π/6) and i(t) = 10 sin (314 t + 2π/3). The p.f of the circuit is

View solution

Q. Assertion (A): The number of basic loops is equal to number of links.

Reason (R): The graph theory helps in choosing independent variables in circuit analysis.

View solution

Q. Consider the following statements associated with two port networks.

1. Z12 = Z21
2. Y12 = Y21
3. h12 = h21
4. AD - BC = 1

Which one of the statement given above are correct?

View solution

Q. A capacitor is considered to be completely charged in __________ time constant.

View solution

Q. Open-circuit voltage is the potential difference between two point when the impedance between these points is

View solution

Q. If H(s) is positive real, 1/H(s)

View solution

Q. For a two- port reciprocal network, the output open circuit voltage divided by the input current is equal to

View solution

Q. Norton's theorem reduces a two terminal network to

View solution

Q. The phase difference between them is __________ degrees.

View solution

Q. In a network

View solution

Q. An ac circuit has two branches in parallel. The impedances of the two branches are equal. Their power factors are 0.8 lagging and 0.8 leading. The overall p.f. is

View solution

Q. All network theorems of dc are applicable to ac also with different quantities taken as phasors.

View solution

Q. A h is the unit of quantity of electricity.

View solution

Q. Which one of the following is an active component?

View solution