D. C. THEORY

DC NETWORK ANALYSIS

CIRCUIT:-

                 Current flowing complete path are called circuit. practically circuit are classified four types, they are given bellow:-  

1.Closed Circuit

2.Open Circuit

3. Short Circuit

4. Leakage Circuit

1.Closed Circuit:-

                            Those circuit current flow continuously are called closed circuit.

                            example:-

2. Open Circuit:-

                        Those circuit current not  flow  are called open circuit.

                        example:-

3.Short Circuit:- 

                           When two phase wire touch each other or one phase and one neutral wire touch each other than fuse will be break or circuit will be burnt out are called short circuit.

example:-

-

4.Leakage Circuit:-

                               When insulation of wire cut down and this part touch moisture wall, body of machine or conduect pipe  than some potential drop this part and total applied potential not reach final destination point are called leakage circuit.  

                            

CLASSIFICATION OF CIRCUIT

Circuit are basically divided in to two parts:-
1. LINEAR CIRCUIT
2. NON LINEAR CIRCUIT

1.Linear Circuit:- 

• Those circuit made by linear electrical and electronics element are called liner circuit.
•  Linear circuit satisfied superposition principle. 
• Superposition principle only applicable on linear and bilateral circuit.
• In superposition principle additivity and homogeneity both are applicable,i.e. linear circuit satisfied additivity and homogeneity both at a time.
• Due to region of additivity and homogeneity superposition principle are also called scaling principle.  
• Linear circuit satisfied associative condition. 
• Linear circuit satisfied distributive condition.
• In linear circuit  excitation and response are  same.
• Linear circuit are also called causal circuit.
• Voltage and Current characteristics of linear circuit are straight line.  
• List of linear element:-

                   1.Resistance
                   2. Capacitor
                   3. Inductor 
                   4. Operational Amplifier 
                   5. Differenciator
                   6. Integrator  etc

2.Non Linear Circuit:-

Those circuit made by non-linear  electrical and electronics element are called non-liner circuit.

Non-Linear circuit not satisfied superposition principle. 

Non-linear circuit not  satisfied additivity and homogeneity both at a time.

Non-linear circuit not satisfied scaling principle.

Non-Linear circuit satisfied associative condition.

Non-Linear circuit not satisfied distributive condition.

In Non-linear circuit  excitation and response are not same.

Non-Linear circuit are also called non-causal circuit.

Voltage and Current characteristics of non-linear circuit are curve line.

List of none linear element:-

                   1.Diode
                   2. Transistor
                   3. Iron core inductor
                   4. Transformer  
                   5. Mixer
                   6. Modulator 
                   7. Digital logic(AND GATE, OR GATE, NOT GATE, NAND GATE, NOR GATE,                           XOR GATE, XNOR GATE  etc)