Process Control and Instrumentation
Radiation pyrometers as compared to thermocouples

Has a slower speed of response
Is more affected by corrosive atmosphere
Can measure higher temperature
Can't measure the temperature of moving objects

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Process Control and Instrumentation
Select the correct statement from the following.

The amplitude ratio of a pure time delay system increases with frequency
The phase lag of a pure time delay system decreases with increasing frequency
The frequency response of a pure capacity process is unbounded
The amplitude ratio of a pure capacity process is inversely proportional to frequency

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