Verification of maximum power transfer theorem
- 1. Verification of Maximum Power Transfer Theorem Aim: To verify maximum power transfer theorem for the given circuit Apparatus Required: S.No Name of the equipment Range/Specification Type Quantity 1 Voltmeter (0-200mV), MC 1 2 Resistors Carbon composite 4 3 RPS (0-30V),2A -- 1 4 Bread board -- 1 5 Connecting wires 1/22 Single Stranded conductor Copper Adequate Circuit Diagram:
- 2. Tabular column: S.No V (Volts) R (Ohms) P=V2/R (Watts)
- 3. Procedure: 1. Connections are given as per the diagram and set a particular voltage in RPS. 2. Vary RL and note down the corresponding voltmeter reading and measure the load resistance. 3. Repeat the procedure for different values of RL & Tabulate it. 4. Calculate the power for each value of RL. To find Vth: 5. Remove the load, and determine the open circuit voltage using multimeter (VTh) To find Rth: 6. Remove the load and short circuit the voltage source (RPS). 7. Find the looking back resistance (RTh) using multimeter. Equivalent Circuit: 8. Set (VTh) using RPS and RTh and note down the voltmeter reading. 9. Calculate the power delivered to the load (RL = RTh) 10. Verify maximum transfer theorem. Theoretical calculation: VTh = I R3 I is the circuit current when RL is removed I = 𝑉 𝑅1+𝑅2 VTh is the drop across R3 when RL is removed RTh = (R1 // R3) + R2 (OR) RTh = VTh / ISC ISC = 𝑉𝑇ℎ 𝑅𝑇ℎ IL = 𝑉𝑇ℎ 𝑅𝑇ℎ+𝑅𝐿 Power P= I2 RL OR P = 𝑉2 𝑅𝐿
- 4. Model graph: Precautions: 1. Voltage control knob of RPS should be kept at minimum position. 2. Current control knob of RPS should be kept at maximum position. Result: