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Measurement, Conversion and Control problems

  • 1. The output voltage of a typical thermocouple is

  • Options
  • A. less than 100 mV
  • B. greater than 1 V
  • C. Thermocouples vary resistance, not voltage.
  • D. None of the above
    • Discuss
  • 2. The connections to a thermocouple

  • Options
  • A. can produce an unwanted thermocouple effect, which must be compensated for
  • B. produce an extra desirable thermocouple effect
  • C. must be protected, since high voltages are present
  • D. produce an extra desirable thermocouple effect and must be protected, since high voltages are present
    • Discuss
  • 3. Temperature sensing can be achieved by the use of

  • Options
  • A. thermocouples
  • B. RTDs
  • C. thermistors
  • D. All of the above
    • Discuss
  • 4. Pressure transducers are devices that exhibit a change in resistance inversely proportional to a change in pressure.

  • Options
  • A. True
  • B. False
    • Discuss
  • 5. Thermocouple connections must be taken into account to ensure a high degree of accuracy.

  • Options
  • A. True
  • B. False
    • Discuss
  • 6. The change in value of the analog signal during the sampling process produces what is called the quantization error.

  • Options
  • A. True
  • B. False
    • Discuss
  • 7. A basic sample-and-hold circuit consists of an analog switch, a capacitor, and an instrumentation amplifier.

  • Options
  • A. True
  • B. False
    • Discuss
  • 8. Noncontacting displacement transducers include optical and capacitive transducers.

  • Options
  • A. True
  • B. False
    • Discuss
  • 9. A strain gauge uses the principle of capacitance for its operation.

  • Options
  • A. True
  • B. False
    • Discuss
  • 10. Displacement, velocity, and acceleration can all be measured by using specific motion transducers.

  • Options
  • A. True
  • B. False
    • Discuss

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