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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.

Log-log
Triangular
Semi-log
Ordinary

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Process Control and Instrumentation
Which of the following is not a mechanical pressure sensing element?

U-tube
Diaphragm
Bellows
Bourdon tube

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Process Control and Instrumentation
A typical example of a physical system with under damped characteristic is a

Spring loaded diaphragm valve
CSTR with first order reaction
U-tube manometer
Thermocouple kept immersed in a liquid filled thermowell

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Process Control and Instrumentation
Continuous measurement of specific gravity of a liquid is done by

Displacement meter
Hydrometer
Both A and C
Contact-type electric indicators

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Process Control and Instrumentation
Which of the following is not a speed measuring instrument?

Psychrometer
All of these
Stroboscope
Tachometer

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Process Control and Instrumentation
Typical specifications for design stipulates the gain margin and phase margin to be respectively

> 1.7 and < 30°
< 1.7 and < 30°
> 1.7 and > 30°
< 1.7 and > 30°

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