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

  • Composition of natural gas is determined by the


  • Options
  • A. Haldane apparatus
  • B. mass spectrometer
  • C. chromatograph
  • D. both (b) and (c)

  • Correct Answer
  • both (b) and (c) 

    • Process Control and Instrumentation problems

    Search Results

    • 1. Working principle of mercury in glass thermometer is

    • Options
    • A. volumetric expansion.
    • B. pressure rise with temperature.
    • C. linear expansion.
    • D. none of these.
      • Discuss
    • 2. Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.

    • Options
    • A. steel
    • B. vycor (a glass)
    • C. nichrome
    • D. inconel
      • Discuss
    • 3. Continuous measurement of moisture content of paper in paper industry is done by measuring the

    • Options
    • A. thermal conductivity through the paper
    • B. electrical resistance through the paper
    • C. magnetic susceptibility
    • D. none of these
      • Discuss
    • 4. Which of the following thermocouples has the least temperature measurement range?

    • Options
    • A. Copper-constantan
    • B. Chromel-alumel
    • C. Platinum-platinum/rhodium
    • D. Iron-constantan
      • Discuss
    • 5. Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a

    • Options
    • A. Beckman thermometer
    • B. dilatometer
    • C. mercury thermometer
    • D. bimetallic thermometer
      • Discuss
    • 6. Which is the strongest paramagnetic gas?

    • Options
    • A. CO2
    • B. O2
    • C. NO
    • D. NO2
      • Discuss
    • 7. Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature?

    • Options
    • A. Chromel-alumel
    • B. Iron-constantan
    • C. Platinum-platinum + rhodium
    • D. Copper-constantan
      • Discuss
    • 8. Phase lag of the sinusoidal response of a first order system is

    • Options
    • A. 120°
    • B. 30°
    • C. 180°
    • D. 90°
      • Discuss
    • 9. Which of the following can measure temperatures in the range of - 20 to 300°C?

    • Options
    • A. Mercury in glass thermometer
    • B. Vapor pressure thermometer
    • C. Resistance thermometer
    • D. None of these.
      • Discuss
    • 10. The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function will have a definite num-ber of loci for variation of K from 0 to ?. The number of loci is

    • Options
    • A. 1
    • B. 3
    • C. 4
    • D. 2
      • Discuss

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