Establish the equivalence between Thevenin’s and Norton’s theorems.
An ideal voltage source can be thought of being a Thevenin equivalent circuit of itself for the special case where series resistance is zero. The Nortorn equivalent circuit of such c circuit would have infinite current which does not exist. Similarly an ideal current source is considered to be a Norton equivalent circuit with an infinite value of resistor (open – circuit) in shunt with it. In this case the Thevenin’s equivalent would have infinite voltage and does not exist.
State Ampere’s Circular law.
For the circuit shown bellow, determine the current i1,i2,i3 using nodal analysis
State and prove maximum power transfer theorem
A ring having a mean diameter of 21 cm and a cross – section of 10 cm2 is made of two semicircular section of cost iron and cost steel respectively with each joint having reluctance equal to air gap of 0.2 mm as shown in figure. Determine the ampere turns required to produce a flux of 0.8 mWb. The relative permeability of cost iron and cost steel are 166 and 800 respectively. Neglect fringing and leakage effects.