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Process Control and Instrumentation

Process Control and Instrumentation
Characteristic equation is the denominator of __________ loop transfer function.

Closed
Neither A Nor B Here
Open
Both A & B Here

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Process Control and Instrumentation
Smoke density of the flue gas going out of the chimney is measured by a

Chromatograph
Photo electric cell
Polarograph
Thermal conductivity meter

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Process Control and Instrumentation
__________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'

Farenhite
Rankine
Celcius
Reumur

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

(time)⁻¹
Velocity
Time
None of these

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

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

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Process Control and Instrumentation
Dead zone in an instrument must be less than __________ percent of the scale.

4
0.2
8
1.5

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