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Home Chemical Engineering Process Control and Instrumentation Comments

  • Question
  • Liquid flow rate in a small channel is best measured by a/an


  • Options
  • A. weir
  • B. pitot tube
  • C. vane meter
  • D. venturimeter

  • Correct Answer
  • pitot tube 


  • Process Control and Instrumentation problems


    Search Results


    • 1. Which of the following thermometers is not suitable for distant reading upto 60 metres?

    • Options
    • A. Vapor pressure thermometer
    • B. Mercury in glass thermometer
    • C. Constant volume gas thermometer
    • D. Resistance thermometer
    • Discuss
    • 2. The initial value (t=0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is

    • Options
    • A. 0
    • B. 1/2
    • C. 1
    • D. 2
    • Discuss
    • 3. Which of the following thermocouple materials does not contain nickel?

    • Options
    • A. Alumel
    • B. Chromel
    • C. Constantan
    • D. None of these.
    • Discuss
    • 4. Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the

    • Options
    • A. enhancement or attentuation of redia-tion occurs in the sighting path.
    • B. object and surrounding are at almost the same temperature.
    • C. object has varying emissivity.
    • D. object is transparent.
    • Discuss
    • 5. A non-linear chemical system is exemplified by a/an

    • Options
    • A. isothermal CSTR
    • B. mixer
    • C. non-isothermal CSTR
    • D. none of these
    • Discuss
    • 6. A barometer measures the __________ pressure.

    • Options
    • A. absolute
    • B. gauge
    • C. absolute as well as gauge
    • D. dynamic
    • Discuss
    • 7. Radiation pyrometers as compared to thermocouples

    • Options
    • A. has a slower speed of response.
    • B. can measure higher temperature.
    • C. can't measure the temperature of moving objects.
    • D. is more affected by corrosive atmosphere.
    • Discuss
    • 8. Pick out the wrong statement

    • Options
    • A. Proportional controller is normally used for level control in industrial applications.
    • B. CSTR can be considered as a distributed parameter system.
    • C. Distributed parameter approach gives partial differential equation.
    • D. Non-linear behaviour is exemplified by an on-off controller.
    • Discuss
    • 9. Which of the following filled system expansion thermometer has the capability to measure the lowest temperature?

    • Options
    • A. Mercury in glass thermometer
    • B. Mercury in steel thermometer
    • C. Alcohol in glass thermometer
    • D. Fused metal (Na or K) in steel thermometer
    • Discuss
    • 10. Range of hydrogen gas constant volume themometer is __________ °C.

    • Options
    • A. -10 to 20
    • B. 0 to 100
    • C. 100 - 500
    • D. 400 - 1000
    • Discuss


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