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Process Control and Instrumentation

Process Control and Instrumentation
Transfer function of transportation lag is

E-TS
ETS
1/(TS + 1)
None of these

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

Ordinary
Semi-log
Log-log
Triangular

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Process Control and Instrumentation
The temperature range for which copper resistance thermometer can be used is __________ °C

350 to 750
0 to 150
500 to 900
-200 to 150

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Process Control and Instrumentation
A mercury barometer measures the __________ pressure.

Absolute
Vacuum
Gauge
Atmospheric

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Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is

Platinum-rhodium
Platinum-platinum+rhyodium
Iron-constantan
Chromel-alumel

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Process Control and Instrumentation
__________ is undesirable in thermocouples used in industries,

Corrosion resistance
Non-linear relation of emf to temperature
Linear relation of emf to temperature
Oxidation resistance

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