By B. L. Theraja

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**Read or Download A Textbook of Electrical Technology in SI Units. Volume I: Basic Electrical Engineering PDF**

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**Extra info for A Textbook of Electrical Technology in SI Units. Volume I: Basic Electrical Engineering **

**Example text**

Node is a junction in a circuit where two or more circuit elements are connected together. II. Branch is that part of a network which lies between two juncions. 12 Loop. It is a close path in a circuit in which no element or node is epcountered more than once. 13. Mesh. It is a loop that contains no other loop within it. For example, the circuit of Fig. 1 (a) has even branches, six nodes, three loops and two meshes whereas the circuit of Fig. 1 (b) has four branches, two nodes, six loops and three meshes.

A- R 2 I R >R > 1 (a) b I b bO Ra a R I Rb I (b) (c) (d) Fig. 81 24. Find the equivalent resistance Ra_b at the tenninals a - b of the networks shown in Fig. 81. [(0) 0 (b) 0 (c) R (d) 2 n] 25. Find the equivalent resistance between tenninals a and b of the circuit shown in Fig. 82 (a). Each resistance has a value of 1 n. [5111n] a b (a) (b) Fig. 82 26. Find the equivalent resistance between tcnninals a and b of the Circuitshown in Fig. 82 (b). Each resistorhas a valueof 1 n. r5/12n] 40 Electrical Technology 27.

79 Fig. 80 [4 V] 23. What is the value of E in the circuit of Fig. 80? All resistances are in ohms. ao , . a- R 2 I R >R > 1 (a) b I b bO Ra a R I Rb I (b) (c) (d) Fig. 81 24. Find the equivalent resistance Ra_b at the tenninals a - b of the networks shown in Fig. 81. [(0) 0 (b) 0 (c) R (d) 2 n] 25. Find the equivalent resistance between tenninals a and b of the circuit shown in Fig. 82 (a). Each resistance has a value of 1 n. [5111n] a b (a) (b) Fig. 82 26. Find the equivalent resistance between tcnninals a and b of the Circuitshown in Fig.