In Bode plot, φ vs. ω is plotted on a/an ______________ graph paper?
A. log-log
B. Ordinary
C. Semi-log
D. Triangular
Process Control and Instrumentation
Which of the following thermocouples has the widest temperature measurement range ?
Which of the following thermocouples has the widest temperature measurement range ?
A. Iron-constantan
B. Chromel-alumel
C. Copper-constantan
D. Platinum-platinum/rhodium
The thermal emf-temperature relationship of most thermocouples is_________________?
The thermal emf-temperature relationship of most thermocouples is_________________?
A. Linear
B. Parabolic
C. Exponential
D. Square root
_____________ is an example of distributed parameter system ?
_____________ is an example of distributed parameter system ?
A. Tubular reactor
B. CSTR
C. On-off controller
D. None of these
Which of the following can measure temperatures in the range of – 20 to 300°C ?
Which of the following can measure temperatures in the range of – 20 to 300°C ?
A. Mercury in glass thermometer
B. Vapor pressure thermometer
C. Resistance thermometer
D. None of these
The level of a liquid under pressure can be determined using___________________?
The level of a liquid under pressure can be determined using___________________?
A. Bubbler system
B. Differential pressure manometer
C. Diaphragm box system
D. Air-trap system
In Bode plot, A.R. vs. w is plotted on a/an _____________ graph paper?
In Bode plot, A.R. vs. w is plotted on a/an _____________ graph paper?
A. Log-lag
B. Triangular
C. Ordinary
D. Semi-log
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
Thermal well made of _____________ gives the fastest speed of response, while measuring temperature by thermocouples?
Thermal well made of _____________ gives the fastest speed of response, while measuring temperature by thermocouples?
A. Steel
B. Vycor (a glass)
C. Nichrome
D. Inconel
With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer ?
With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer ?
A. Increases
B. Decreases
C. Remain constant
D. Increases exponentially