Process Control and Instrumentation

Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?

Byadmin March 5, 2019August 24, 2021

Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?

A. Thermocouple
B. Resistance thermometer
C. Mercury in glass thermometer
D. Vapor pressure thermometer

Process Control and Instrumentation

Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are________________?

Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are________________?

A. Air to open valve with the controller direct acting
B. Air to close valve with the controller indirect acting
C. Air to open valve with the controller indirect acting
D. Air to close valve with the controller direct acting

Read More Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are________________?
Process Control and Instrumentation

Dead zone is the__________________?

Dead zone is the__________________?

A. Same as time constant
B. Same as transportation lag
C. Maximum change in the variable that does not change the reading of the instrument
D. None of these

Read More Dead zone is the__________________?
Process Control and Instrumentation

Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?

Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?

A. Radiation/infrared pyrometer
B. Filled system thermometer
C. Mercury in glass thermometer
D. Thermo electric pyrometer

Read More Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?
Process Control and Instrumentation

Conversion formula for converting amplitude ratio (AR) into decibels is ________________?

Conversion formula for converting amplitude ratio (AR) into decibels is ________________?

A. Decibel = 20 log10 (AR)
B. Decibel = 20 loge (AR)
C. Decibel = 20 log10 (AR)0.5
D. Decibel = 20 loge (AR)0.5

Read More Conversion formula for converting amplitude ratio (AR) into decibels is ________________?
Process Control and Instrumentation

Composition of alloys can be determined by _________________?

Composition of alloys can be determined by _________________?

A. Polarograph
B. Chromatograph
C. Refractometer
D. None of these

Read More Composition of alloys can be determined by _________________?
Process Control and Instrumentation

Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing ?

Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing ?

A. Helium
B. Nitrogen
C. Hydrogen
D. None of these

Read More Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing ?

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