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Process Control and Instrumentation

Process Control and Instrumentation
A non-linear chemical system is exemplified by a/an

Isothermal CSTR
Mixer
None of these
Non-isothermal CSTR

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Process Control and Instrumentation
What is the Laplace transform of sin t ?

S/(s² + 1)
S/(s² - 1)
1/(s² + 1)
1/(s² - 1)

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Process Control and Instrumentation
Temperature of __________ can not be measured by an optical or radiation pyrometer.

Molten slag flowing out of blast furnace
Hot blast (air) from stoves
Combustion space in boilers
Rotary limestone calcination kiln

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Process Control and Instrumentation
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their

Low thermal conductivity
Low electrical conductivity
High viscosity index
Low flash point

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Process Control and Instrumentation
Which of the following thermocouples has the least temperature measurement range?

Chromel-alumel
Platinum-platinum/rhodium
Copper-constantan
Iron-constantan

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Process Control and Instrumentation
__________ thermometer can not measure sub-zero (< 0° C) temperature,

Vapor pressure
Resistance
Mercury in glass
Bimetallic

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