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Process Control and Instrumentation

Process Control and Instrumentation
Thermal conductivity cell is the primary element of a/an __________ analyser.

Oxygen
Sulphur dioxide
Carbon monoxide
Carbon dioxide

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Process Control and Instrumentation
The term analogous to the electrical current in a thermal system is the

Heat content in the system
None of these
Heat flow rate
Temperature difference

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Process Control and Instrumentation
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?

O₂
CO
CO₂
N₂

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Process Control and Instrumentation
Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1).

W = 1, Kc = 13
W = 1/√14, Kc = 45/7√14
W = √(7/6), Kc = 46/3
W = √(7/8), Kc = 45/4

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Process Control and Instrumentation
Temperature measuring instruments are standardised mostly with __________ points of pure substances.

Both A & B Here
Boiling
Neither A nor B Here
Melting

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Process Control and Instrumentation
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Triangular
Log-log
Semi-log
Ordinary

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