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Process Control and Instrumentation

Process Control and Instrumentation
__________ is an example of distributed parameter system

Tubular reactor
None of these
CSTR
On-off controller

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

2/s³
2/s²
4/s²
4/s³

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

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

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Process Control and Instrumentation
Response of a linear control system for a change in set point is called

Servo problem
Regulator problem
Transient response
Frequency response

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Process Control and Instrumentation
Flow rate through an orifice is __________ the pressure differential.

Proportional to
Inversely proportional to the square of
Proportional to the square root of
Inversely proportional to the square root of

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Process Control and Instrumentation
Measurement of sub-zero Celcius temperature in industry is done most commonly by

Resistance thermometers
Thermocouples
Bi-metallic thermometers
Gas thermometers

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