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Process Control and Instrumentation

Process Control and Instrumentation
The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly

Non-linear
Linear
Hyperbolic
Parabolic

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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

Gage glass
Differential pressure gage
None of these
External float gage

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Process Control and Instrumentation
Dead zone is the

Same as transportation lag
Maximum change in the variable that does not change the reading of the instrument
Same as time constant
None of these

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Process Control and Instrumentation
Working principle of disappearing filament type optical pyrometer is based on the

Kirchoff's law
Seebeck effect
Peltier effect
Wien's law

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Process Control and Instrumentation
0n-off control which is a special case of proportional control, has a band width of about __________ percent.

75
25
100

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

Triangular
Log-log
Semi-log
Ordinary

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