RECIPROCITY THEOREM - ECS LAB (II year II sem)

RECIPROCITY THEOREM

AIM: - To verify Reciprocity theorem                                                 

APPARATUS REQUIRED:

Sl. No.	Name of the Component	Specifications	Quantity
1	Resistors	1 KW	2 1
		2.2 KW
2	D.R.P.S.	0-30 v	1
3	Ammeters	0-20 mA	1
4	Bread board		1

THEORY:

 Reciprocity Theorem:

            In any linear bilateral network, if a source of e.m.f E in any branch produces a current I in any other branch, then the same e.m.f E acting in the second branch would produce the same current I in first branch.

PROCEDURE:

Reciprocity Theorem:

1. Connect the circuit as shown in Fig 1-d.

2. Apply some voltage V1

3. Note down the ammeter (0 – 20 mA) reading as “I₁”

4. Inter change ammeter and voltage source as shown in Fig 1-e. and read the ammeter reading as “I₂”

5. Repeat the above procedure for different values or V1 and tabulate the values.

6. I₁ should be equal to I₂

 PREACAUTIONS: 

1. Connect the circuit elements as per the circuit diagram

2. Avoid loose connections of the circuit elements

3. Take the readings carefully and accurately

      4. Do not tamper the circuit elements.

OBSERVATION TABLE:

(A)  Reciprocity Theorem: 

                       For I₁

   

Sl. No.	Input Voltage  V (volts)	I1 (mA) Theoretical	I1 (mA) Practical
1 2 3 4 5	5 10 15 20 25

              

                              For I₂

   

Sl. No.	Input Voltage  V (volts)	I2 (mA) Theoretical	I2 (mA) Practical
1 2 3 4 5	5   10   15   20   25

RESULT: