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Process Control and Instrumentation

Process Control and Instrumentation
A control system has the following transfer function F(s) = (s - 1)(s + 1)/s(s - 2)(s + 4)The initial value of the corresponding time function is

44020
1
-1
43838

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Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

Iron-constantan
Chromel-alumel
None of these
Platinum-platinum+rhodium

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Process Control and Instrumentation
Nitrogen gas constant volume thermometer is suitable for measuring a temperature of __________ °C.

0-100
> 50
< 0
> 100

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Process Control and Instrumentation
Pressure of 0.0001 absolute psi can be measured by __________ gauge

Mcloid
None of these
Pirani
Thermocouple

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Process Control and Instrumentation
Which of the following instruments is not used for measuring sub-zero (<0°) temperatures?

Platinum resistance thermometer
Vapor pressure thermometer
Radiation pyrometer
Mercury in glass thermometer

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Process Control and Instrumentation
Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature?

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

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