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Process Control and Instrumentation

Process Control and Instrumentation
Polarograph is meant for the analysis of

Miscible liquids
Solids
Gaseous mixture
Isotopes

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

Ordinary
Log-log
Triangular
Semi-log

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Process Control and Instrumentation
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their

High viscosity index
Low flash point
Low electrical conductivity
Low thermal conductivity

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Process Control and Instrumentation
The amplitude ratio for the sinusoidal response of a __________ is 1.

First order system
Second order system
Transportation lag
None of these

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Process Control and Instrumentation
In second order underdamped system,

Decay ratio = (overshoot)²
Decay ratio = overshoot
Large damping co-efficient means smaller damping
Overshoot increases for increasing damping co-efficient

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Process Control and Instrumentation
Liquid discharge from a tank or reservoir can not be measured by

Weirs
Mouthpieces
Notches
Orificemeters

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