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Process Control and Instrumentation

Process Control and Instrumentation
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Ordinary
Triangular
Log-log
Semi-log

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Process Control and Instrumentation
The term analogous to the electrical current in a thermal system is the

Heat flow rate
None of these
Temperature difference
Heat content in the system

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Process Control and Instrumentation
Thermistors are used in __________ devices.

Temperature measuring
Temperature compensating
Voltage measuring
Both B & C

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Process Control and Instrumentation
What is the dynamic error in a critically damped second order instrument for a ramp input (AT)?

1.5 AT
√AT
0.5 AT
2 AT

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Process Control and Instrumentation
In an exothermic chemical reactor, the manipulated variable is the flow rate of

Product
Reactants
Coolant
None of these

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Process Control and Instrumentation
Psychrometer determines the

Hygroscopic nature of solids
Moisture content of solids
Water of crystallisation
Humidity of gases

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