logo

CuriousTab

CuriousTab

Discussion

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

  • 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

  • Correct Answer
  • Platinum-platinum + rhodium 

    • Process Control and Instrumentation problems

    Search Results

    • 1. Which is the strongest paramagnetic gas?

    • Options
    • A. CO2
    • B. O2
    • C. NO
    • D. NO2
      • Discuss
    • 2. Composition of natural gas is determined by the

    • Options
    • A. Haldane apparatus
    • B. mass spectrometer
    • C. chromatograph
    • D. both (b) and (c)
      • Discuss
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. Phase lag of the sinusoidal response of a first order system is

    • Options
    • A. 120°
    • B. 30°
    • C. 180°
    • D. 90°
      • Discuss
    • 7. 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
    • 8. 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
    • 9. For two non-interacting first order systems connected in series, the overall transfer function is the __________ of the individual transfer functions.

    • Options
    • A. product
    • B. ratio
    • C. sum
    • D. difference
      • Discuss
    • 10. In Bode plot, ? vs ? is plotted on a/an __________ graph paper.

    • Options
    • A. log-log
    • B. ordinary
    • C. semi-log
    • D. triangular
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.