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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.

Ordinary
Triangular
Semi-log
Log-log

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Process Control and Instrumentation
The second order system with the transfer function 4/(S² + 2S + 4) has a damping ratio of

4.0
2.0
1.0
0.5

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Process Control and Instrumentation
Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature?

Platinum-platinum + rhodium
All of these
Iron-constantan
Chromel-constantan

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

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

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Process Control and Instrumentation
Flame photometry is used for the determination of compositional analysis of

Isotopes
Alkali metals
Solids
Natural gas

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

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