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Process Control and Instrumentation

Process Control and Instrumentation
Bode stability method uses __________ loop transfer function.

Closed
Neither A nor B Here
Either A Or B Here
Open

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

Thermal conductivity meter
Polarograph
Chromatograph
Photo electric cell

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Process Control and Instrumentation
Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.

- 79 and 395
- 39 and 350
- 10 and 425
- 51 and 439

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Process Control and Instrumentation
Meleoid gauge measures the __________ pressure.

Sub-atmospheric
Atmospheric
Positive
Very high

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Process Control and Instrumentation
For two non-interacting first order systems connected in series, the overall transfer function is the __________ of the individual transfer functions.

Difference
Product
Ratio
Sum

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Process Control and Instrumentation
Instrumentation in a plant offers the advantage of

All of these
Greater safety of operation
Greater operation economy
Better quality of product

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