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Home ‣ Chemical Engineering ‣ Process Control and Instrumentation Comments
  • Question

  • A pyrheliometer is an instrument used for measuring the


  • Options
  • A. bright sunshine period.
  • B. beam radiation.
  • C. diffuse radiation.
  • D. none of these.

  • Correct Answer
  • beam radiation. 

    • Process Control and Instrumentation problems

    Search Results

    • 1. __________ is the static characteristics of an instrument,

    • Options
    • A. Response
    • B. Tine lag
    • C. Drift
    • D. dynamic error
      • Discuss
    • 2. 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
    • 3. 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
    • 4. 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
    • 5. Thermal conductivity cell is the primary element of a/an __________ analyser.

    • Options
    • A. oxygen
    • B. carbon dioxide
    • C. carbon monoxide
    • D. sulphur dioxide
      • Discuss
    • 6. A simple pitot tube measures the

    • Options
    • A. average velocity
    • B. maximum velocity
    • C. point velocity
    • D. static pressure
      • Discuss
    • 7. Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature

    • Options
    • A. emf produced is very low of the order of microvolt.
    • B. embrittlement of iron occurs.
    • C. rusting of iron takes place.
    • D. both (b) and (c).
      • Discuss
    • 8. Flow rate measurement of hostile acids and alkalis can be most suitably done by a/an

    • Options
    • A. venturimeter
    • B. orificemeter
    • C. magnetic flow meter
    • D. hot wire anemometer
      • Discuss
    • 9. The level of a liquid under pressure can be determined using

    • Options
    • A. bubbler system
    • B. differential pressure manometer
    • C. diaphragm box system
    • D. air-trap system
      • Discuss
    • 10. Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing

    • Options
    • A. helium
    • B. nitrogen
    • C. hydrogen
    • D. none of these
      • Discuss

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