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

Q. A capacitor used for power factor correction in single- phase circuit decreases

View solution

Q. Permittivity has the units of F/m.

View solution

Q. Which of following is linear and bilateral parameter?

View solution

Q. Consider the following statements for a driving point function F(jω):

1. Re F(jω) is an even function of ω and is 0 or positive for all values of ω.
2. Im F(jω) is an even function of ω and is 0 or positive for all values of ω.
3. Re F(jω) is an odd function of ω and is 0 or negative for all values of ω.
4. Re F(s) = 0 for Re s = 0.

Which one of the statements given above is/are correct?

View solution

Q. A 2-terminal network consists of one of the RLC elements. The elements is connected to an ac supply. The current through the element is 1 A. When an inductor is inserted in series between the source and the element, the current through the element becomes 2 A. What is this element?

View solution