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Experiment 5: load for optimum performance, Answer to question – PASCO TD-8564 THERMAL EFFICIENCY APPARATUS User Manual

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Thermal Efficiency Apparatus

012-05443A

28

Experiment 5: Load for Optimum Performance

Notes on Sample Data

1

1

1

1

1

1

1.9

2

2.1

2.2

2.3

2.4

0

0.5

1

1.5

2

2.5

3

3.5

% Efficiency

Load Resistance ( )

Answer to Question

The efficiency is a maximum when the 1.5

resistance

is used. This is close to the value of the internal
resistance determined in experiment 2, as well.