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Process Control and Instrumentation

Process Control and Instrumentation
Psychrometer determines the

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

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Process Control and Instrumentation
Bourdon gauges are used for measuring pressure (kg/cm² )

> 2 (gauge)
> 10 (absolute)
< atmospheric
< 2 (gauge)

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Process Control and Instrumentation
The frequency at which maximum amplitude ratio is attained is called the __________ frequency.

Resonant
Natural
Cross-over
Corner

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Process Control and Instrumentation
The closed loop pole of a stable second order system could be

Complex conjugate with positive real parts
Both real and negative
One real positive and the other real negative
Both real and positive

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Process Control and Instrumentation
Mercury manometer (U-tube type) exemplifies a __________ order system.

First
Second
Zero
Third

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Process Control and Instrumentation
Which of the following can not measure a temperature of 1600°C ?

Radiation pyrometer
Platinum resistance thermometer
Thermocouple
Photo-electric pyrometer

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