Network Theorems - Interview Questions and Answers

1. "In any network containing more than one sources of e.m.f. the current in any branch is the algebraic sum of a number of individual fictitious currents (the number being equal to the number of sources of e.m.f.), each of which is due to separate action of each source of e.m.f., taken in order, when the remaining sources of e.m.f. are replaced by conductors, the resistances of which are equal to the internal resistances of the respective sources". The above statement is associated with

2. If resistance across LM in Fig. 2.30 is 15 ohms, the value of R is

3. An ideal voltage source should have

4. For maximum transfer of power, internal resistance of the source should be

5. For high efficiency of transfer of power, internal resistance of the source should be