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Process Control and Instrumentation

Process Control and Instrumentation
Use of I-control along with P-control facilitates

Elimination of offset
Reduction of stability time
None of these
Reduction of offset

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Process Control and Instrumentation
Silver point temperature is __________ °C.

760.5
1060.5
860.5
960.5

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Process Control and Instrumentation
Which of the following thermocouples has the least temperature measurement range?

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

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

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

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Process Control and Instrumentation
For measuring the temperature of a red hot furnace, which is the most suitable instrument?

Thermocouple
Platinum resistance thermometer
Bimetallic thermometer
Optical pyrometer

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Process Control and Instrumentation
Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.

Inconel
Steel
Nichrome
Vycor (a glass)

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