21) What is the number of chords of a connected graph G of n vertices and edges ?
a) n (n – 1)/2
b) n -1
c) e – n – 1
d) e – n + 1
22) In a network with twelve circuit elements and five nodes, what is the minimum number of mesh equations ?
a) 24
b) 12
c) 10
d) 8
23) Width of resonance curve in an R-L-C network is determined by which one of the following ?
a) R alone
b) L alone
c) C alone
d) All R, L and C
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