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Q#1 Network Theorems (DC Circuits) GATE EE 2021 MCQ +1 mark -0.33 marks

For the network shown, the equivalent Thevenin voltage and Thevenin impedance as seen across terminals 'ab' is

Diagram, schematic

Description automatically generated

10 V in series with 12 Ω

65 V in series with 15 Ω

50 V in series with 2 Ω

35 V in series with 2 Ω

Explanation:

Given circuit can be resolved as shown below,

Diagram, schematic

Description automatically generated

Diagram, schematic

Description automatically generated

Vx = 2 + 3 + 10 = 15 V

Alternate method

To determine VOC, we open terminal a & b

         

 i = 0        i1 = 5 A        

By KVL,        

To determine ISC, Short terminals a & b

By KVL,        

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