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Process Control and Instrumentation

Process Control and Instrumentation
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches

∞
-1
1

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

Mercury in glass
Vapor pressure
Resistance
Bimetallic

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Process Control and Instrumentation
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple?

13
0.1
29
3

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Process Control and Instrumentation
Temperature measurement by optical pyrometer is done above __________ point, which is 1063°C.

Nickel
Antimony
Gold
Silver

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Process Control and Instrumentation
Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury.

250
350
550
700

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

Mixer
Isothermal CSTR
None of these
Non-isothermal CSTR

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