Network Theory Laboratory Viva Questions 3

1 . A graph is made up of n nodes, including the reference node. Which of the following will not meet the condition to form a tree of the graph?

a) Must connect all n nodes

b) Must connect all (n-1) nodes except the reference node

c) Must be oriented

d) Must not have a closed path

Answer : [B]

2. Which of the following does not correctly describe a co-tree?

a) Complement of a tree

b) Made up of all elements other than a tree

c) Un-corrected sub-graph

d) None of these

Answer : [D]

3. Which of the following gives the correct number of basic loops?

a) Equal to the number of branches

b) Equal to the number of links

c) Equal to the number of elements

d) Equal to the number of nodes

Answer : [B]

4. The orientation of a basic loop is the same as that of a

A) link

b) branch

c) path

d) none of these

Answer : [A]

5. 1. If VL and IL corresponds to a voltage across and current through an inductor, VC and IC corresponds to a voltage across and current through the capacitor, then match the following

Column A Column B

(i) Vc = constant (P) DC steady state condition for capacitor

(ii) Open circuit (Q) DC steady state condition for an inductor

(iii) IL = constant (R) DC steady state behavior of capacitor

(iv) IC (S) DC steady state behavior of an inductor

(v) VL (T) Can change instantaneously

(U) Cannot change instantaneously

(A) (i) – Q, (ii) – S, (iii) – P, (iv) – U, (v) -T

(B) (i) – R, (ii) – P, (iii) – S, (iv) – T, (v) - U

(C) (i) – U, (ii) – R, (iii) – P, (iv) – S, (v) - T

(D) (i) – P, (ii) – R, (iii) – Q, (iv) – T, (v) – T

Answer : [D] (i) – P, (ii) – R, (iii) – Q, (iv) – T, (v) – T

6. Assertion (A): The voltage of a capacitive system cannot change instantaneously.

Reason (R): The charge in a capacitive system can increase or decrease in zero time.

a) Both A & R are correct, but R is not correct explanation for A.

b) Both A & R are correct, and R is the correct explanation for A.

c) Both A & R are incorrect.

d) A is correct but R is incorrect.

7. In the circuit shown below, the power consumed in the resistance R is measured when one

source is acting at a time, these values are 18 W, 50 W and 98 W. When all the sources are

acting simultaneously, the possible maximum and minimum values of power in R will be

(A) 98 W and 18 W

(B) 166 W and 18 W

(C) 450 W and 2 W

(D) 166 W and 2 W

9. Is it safe to connect the music player along with amplifier to drive the loud

Speaker?

(A) Yes

(B) Can’t say

(D) Data insufficient

(E) Amplifier never connected to speaker

Answer : [C]

10. What could be your decision on overall connection?

(A) Overall system is working properly.

(B) Don’t use an amplifier.

(C) Buy a speaker of less power rating.

(D) Buy a speaker of high power rating.

(E) None of the above

Answer : [D]