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Exp 5

The document outlines a laboratory experiment aimed at verifying the Maximum Power Transfer Theorem, which states that maximum power is transferred when load resistance equals the source's internal resistance. It includes a list of required apparatus, a procedural guide for conducting the experiment, and a tabular column for recording results. Additionally, it provides theoretical calculations and precautions to ensure accurate measurements during the experiment.

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Vikas Rohal
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45 views3 pages

Exp 5

The document outlines a laboratory experiment aimed at verifying the Maximum Power Transfer Theorem, which states that maximum power is transferred when load resistance equals the source's internal resistance. It includes a list of required apparatus, a procedural guide for conducting the experiment, and a tabular column for recording results. Additionally, it provides theoretical calculations and precautions to ensure accurate measurements during the experiment.

Uploaded by

Vikas Rohal
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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DEPARTMENT OF ELECTRICAL AND

ELECTRONICS ENGINEERING BASIC ELECTRICAL ENGINEERING LAB

5. MAXIMUM POWER TRANSFER THEOREM

AIM: To Verify The Maximum Power Transfer Theorem For The Given Circuit.

APPARTUS REQUIRED:

SI. No Equipment Range Qty


1 Bread board - 1 NO
2 DC Voltage source. 0-30V 1 NO
3 Resistors 470 Ω 1 NO
4 Decade resistance 0-10k Ω 1 NO
box
5 Ammeter 0-20mA 1 NO
6 Connecting wires 1.0.Sq.mm As required

CIRCUIT DIAGRAM:

THEORY:
STATEMENT:
It states that the maximum power is transferred from the source to load when the load
resistance is equal to the internal resistance of the source.
(or)
The maximum transformer states that “A load will receive maximum power from a linear
bilateral network when its load resistance is exactly equal to the Thevenin’s resistance of
network, measured looking back into the terminals of network.

MRCET EAMCET CODE:MLRD www.mrcet.ac.in 18


DEPARTMENT OF ELECTRICAL AND
ELECTRONICS ENGINEERING BASIC ELECTRICAL ENGINEERING LAB

PROCEDURE:
1. Connect the circuit as shown in the above figure.
2. Apply the voltage 12V from RPS.
3. Now vary the load resistance (RL) in steps and note down the corresponding Ammeter
Reading
( IL) in milli amps and Load Voltage (VL) volts
6. Tabulate the readings and find the power for different load resistance values.
7. Draw the graph between Power and Load Resistance.
8. After plotting the graph, the Power will be Maximum, when the Load Resistance will be
equal to source Resistance
TABULAR COLUMN:

S.No RL IL(mA) Power(P max)=IL2*RL(mW)

1
2
3
4
5
6
7
8

MRCET EAMCET CODE:MLRD www.mrcet.ac.in 19


DEPARTMENT OF ELECTRICAL AND
ELECTRONICS ENGINEERING BASIC ELECTRICAL ENGINEERING LAB

Theoretical Calculations:-

R = (Ri + RL) =...Ω

IL = V / R =…mA

Power = (IL2) RL =…mW

PRECAUTIONS:
1. Initially keep the RPS output voltage knob in zero volt position.
2. Set the ammeter pointer at zero position.
3. Take the readings without parallax error.
4. Avoid loose connections.
5. Avoid short circuit of RPS output terminals.

RESULT:

VIVA QUESTIONS:
1) What is maximum power transfer theorem?
2) What is the application of this theorem?

MRCET EAMCET CODE:MLRD www.mrcet.ac.in 20

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