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  • Question

  • Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the


  • Options
  • A. mercury in glass thermometer.
  • B. optical pyrometer.
  • C. iron-constantan thermocouple.
  • D. alcohol filled thermometer.

  • Correct Answer
  • optical pyrometer. 

    • Process Control and Instrumentation problems

    Search Results

    • 1. Which of the following flow-metering instru-ments is an areameter?

    • Options
    • A. Venturimeter
    • B. Rotameter
    • C. Pitot tube
    • D. Hot wire anemometer
      • Discuss
    • 2. E.m.f. generated by thermocouples is of the order of

    • Options
    • A. millivolts
    • B. microvolts
    • C. volts
    • D. kilo volts
      • Discuss
    • 3. The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches

    • Options
    • A. -1
    • B. 0
    • C. 1
    • D. ?
      • Discuss
    • 4. Polarograph is meant for the analysis of

    • Options
    • A. gaseous mixture
    • B. miscible liquids
    • C. solids
    • D. isotopes
      • Discuss
    • 5. Which of the following fluid flow measuring devices can measure the largest flow rate?

    • Options
    • A. V-notch
    • B. Rotameter
    • C. Orificemeter
    • D. Weir
      • Discuss
    • 6. Thermal conductivity cell is the primary element of a/an __________ analyser.

    • Options
    • A. oxygen
    • B. carbon dioxide
    • C. carbon monoxide
    • D. sulphur dioxide
      • Discuss
    • 7. Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is

    • Options
    • A. water
    • B. carbon tetrachloride
    • C. paraffin
    • D. ethylene glycol
      • Discuss
    • 8. Presence of a small amount of water in the organic systems can be determined by the __________ method.

    • Options
    • A. electrical conductivity
    • B. polarimetry
    • C. emission spectroscopy
    • D. dielectric constant end loss factor
      • Discuss
    • 9. The open loop transfer function of a control system is . This represents

    • Options
    • A. a first order system.
    • B. dead time system.
    • C. a first order time lag.
    • D. a second order system.
      • Discuss
    • 10. __________ is the static characteristics of an instrument,

    • Options
    • A. Response
    • B. Tine lag
    • C. Drift
    • D. dynamic error
      • Discuss

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