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Process Control and Instrumentation

Process Control and Instrumentation
Polarograph is meant for the analysis of

Gaseous mixture
Miscible liquids
Isotopes
Solids

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Process Control and Instrumentation
The unit step response of the transfer function 1/(s² + 2s + 3)

Is overdamped
Has a damped oscillatory characteristics
Has a non-zero slope at the origin
Is unstable

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Process Control and Instrumentation
The unit of 'time constant' of a system is the same as that of

Velocity
None of these
(time)⁻¹
Time

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Process Control and Instrumentation
Liquid argon level in a pressurised storage tank (at 3 kg/cm² ) is measured by a/an

External float gage
Gage glass
Differential pressure gage
None of these

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Process Control and Instrumentation
Pressure of 0.01 psi (absolute) can be measured by __________ gauge.

Mcloid
Ionisation
Pirani
None of these

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Process Control and Instrumentation
A negative gain margin expressed in decibels means a/an __________ system.

Critically damped
Stable
Unstable
None of these

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