# Two Port Network – 1 – 1

1. A two-port network is simply a network inside a black box, and the network has only :

(a) two terminals
(b) two pairs of accessible terminals
(c) two pairs of ports
(d) none of these

Explanation
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2. The number of possible combination generated by four variables taken two at a time in a two-port network is :

(a) four
(b) two
(c) six
(d) none of these

Explanation
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3. Two Two-port networks are connected in cascade. The combination is to the represented as a single two – port network, by multiplying the individual :

(a) z-parameter matrices
(b) h-parameter matrices
(c) y-parameter matrices
(d) ABCD parameter

Explanation
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4. Which among the following represents the precise condition of reciprocity for transmission parameters ?

(a) AB – CD = 1
(b) AD – BC = 1
(c) AC – BD = 1
(d) None of the above

Explanation
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5. Which is the correct condition of symmetry observed in z-parameters?

(a) z11 = z22
(b) z11 = z12
(c) z12 = z22
(d) z12 = z21