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Process Control and Instrumentation

Process Control and Instrumentation
Transfer function of transportation lag is

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

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Process Control and Instrumentation
Starting temperature of optical radiation pyrometer is __________ °C.

1200
800
400
1500

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Process Control and Instrumentation
Conversion formula for converting amplitude ratio (AR) into decibels is

Decibel = 20 loge (AR)0.5
Decibel = 20 loge (AR)
Decibel = 20 log10 (AR)
Decibel = 20 log10 (AR)0.5

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Process Control and Instrumentation
Load cells are used for the measurement of

Stress
Weight
Velocity
Strain

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Process Control and Instrumentation
Which of the following thermocouples can measure the maximum temperature?

Platinum-rhodium
Iron-constantan
Tungsten-molybdenum
Chromel-alumel

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Process Control and Instrumentation
Which of the following is a desirable characteristic of an instrument?

Poor reproducibility
High fidelity
High drift
High measuring lag

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