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Process Control and Instrumentation

Process Control and Instrumentation
The inverse Laplace transform of the function f(s) = 1/S(1 + S) is

1 + et
1 + e-t
1 - e-t
1 - et

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Process Control and Instrumentation
Configuration of Bourdon spring tube is never made of __________ shape.

Spiral
Helical
Circular
Semi-circular

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

13
3
29
0.1

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Process Control and Instrumentation
Identify an unbounded input from inputs whose transfer functions are given below

1/S
1/S²
1/(S² + 1)
1

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Process Control and Instrumentation
Dome temperature of blast furnace stove is most accurately measured by a

Platinum resistance thermometer
Radiation pyrometer
Platinum-platinum/rhodium ther-mocuple
Iron-constantan thermocouple

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Process Control and Instrumentation
Thermisters which have a very high temperature co-efficient of resistivity belong to the class of solid called

Dielectrics
Conductors
Insulators
Semi conductors

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