Lab 7

What should be done before replacing a power supply with a short circuit?

• Disconnect the power supply from the circuit.

• Increase the voltage of the power supply.

• Measure the current through the circuit.

• Connect the load resistor RL.

What advice is given regarding the resistance substitution box?

• Always use the numbers on the box as they are accurate.

• The box should not be used for Thevenin circuits.

• Do not trust the numbers on the box; measure the resistance with a digital ohmmeter.

• Use the box only for AC circuits.

What is the purpose of designing the Thevenin equivalent circuit?

• To measure the current through the circuit.

• To reduce the number of components in the circuit.

• To increase the power efficiency of the circuit.

• To check that it gives the same values VL as the original circuit.

What should be done if the Thevenin equivalent circuit does not provide the same voltage across a load?

• Decrease the voltage of the sources.

• Explain possible reasons for discrepancies.

• Ignore the differences as they are negligible.

• Increase the resistance of the load.

What is the warning given regarding the power supplies?

• Always increase the voltage before disconnecting.

• Do not short the power supplies when replacing it with a short circuit.

• Ensure the power supplies are always connected.

• Never use AC power supplies in this lab.

What should be done with figures and tables in the report?

• Number them and give them captions (titles).

• Place them at the end of the report.

• Use them only if necessary.

• Include them without any labels.