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37.

The incidence matrix A of a connected graph is given below :

The following statements are associated with the above matrix.
1. Branches 2, 3 are in series.
2. Branches 4, 5 are in series.
3. Voltages of branches 4, 5 and 6 from an independent set.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) 1 and 3
(d) 1, 2 and 3

asked in Electrical Paper-1, 2007

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38.

Consider the following statements on mesh and nodal analysis.
1. Networks that contain many series connected elements, voltage sources or meshes having common current sources (super meshes) are more suitable for mesh analysis than for nodal analysis.
2. Networks with parallel connected elements, current sources or nodes connected by voltage sources are more suitable for nodal analysis than mesh analysis.
3. A circuit with fewer nodes than meshes is better analyzed using mesh analysis, while a circuit with fewer meshes, than nodes is better analyzed using nodal analysis.
Which of the statements given above are correct?
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1,2 and 3

asked in Electrical Paper-1, 2007

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39.

Steady state is reached with S open. S is closed at t =0. What is value of the current I at t =0⁺?

(a) 1 A
(b) 2 A
(c) 3 A
(d) 4 A

asked in Electrical Paper-1, 2007

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40.

Consider the circuit in the below figure. What is the power delivered by the 24V source?

(a) 96 W
(b) 144 W
(c) 192 W
(d) 288 W

asked in Electrical Paper-1, 2007

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41.

Assertion (A): A four terminal passive linear network will always have an equivalent T-network.
Reason (R): The Thevenin's theorem is applicable in cases of transfer functions also.
Which of the following statements is correct?
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

asked in Electrical Paper-1, 2007

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42.

For the network shown in the figure given below, Z(0) =3Ω and Z(∞) =2. What are the values of R₁ and R₂ , respectively?

a. 2Ω, 1Ω
b. 3Ω, 2Ω
c. 1Ω, 2Ω
d. 2Ω, 3Ω

asked in Electrical Paper-1, 2007

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