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Process Control and Instrumentation

Process Control and Instrumentation
For an input forcing function, X(t) = 2t², the Laplace transform of this function is

2/s²
2/s³
4/s²
4/s³

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Process Control and Instrumentation
High temperature of around 2000°C of incandescent gas mantles is measured by a/an

Radiation pyrometer
Specially designed thermocouple
None of these Here
Optical pyrometer

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Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a functioning element.

Bourdon tube
Bulb
Pointer
None of these

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Process Control and Instrumentation
Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.

87.5
100
95
63.2

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Process Control and Instrumentation
Alphatron measures pressure __________ microns.

< 0.1
< 3
> 3
< 1

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Process Control and Instrumentation
The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to

D
D²
D³
D⁴

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