Basic Electricity and Electronics for Control: Fundamentals and Applications, 3rd Edition

CHAPTER 8

1.

Using the following figure, answer questions a, b, and c.

  1. If Rs is set to 3.850 kilohms for a balanced condition, what is the value of Rx?

    __________ ohms

  2. If the DC source = 10V at balance what current flows in the

    Ra-Rs branch __________ mA

    Rb-Rx branch __________ mA

    A-B branch ____________ mA

  3. What is the range (in ohms) that can be measured with this bridge?

    _______ ohms to _______ ohms

2.

In the following figure determine the value of the multiplier resistor to measure resistance in the range of:

  • 10 ohms to 1 kilohm _________ ohms

  • 5 kilohms to 10 kilohms __________ ohms

  • 0.1 megohm to 1 megohm __________ ohms

  • 50 kilohms to 100 kilohms __________ ohms

  • 1-100 ohms __________ ohms

Answers

1.

Using the following figure, answer a, b, and c.

  1. If Rs is set to 3.850 kilohms for a balanced condition, what is the value of Rx?

    3.850 kilohms

  2. If the DC source is 10V at balance what current flows in the

    1. Ra-Rs branch 0.42mA

    2. Rb-Rx branch 0.42mA

    3. A-B branch 0.0mA

  3. What is the range (in ohms) that can be measured with this bridge?

    Approx: 0 ohms to 5000 ohms

2.

In the following figure determine the value of the multiplier resistor to measure resistance in the range of:

  • 10 ohms to 1 kilohms 10 kilohms

  • 5 kilohms to 10 kilohms 20 kilohms

  • 0.1 megohm to 1 megohm 2 megohms

  • 50 kilohms...

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