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Process Control and Instrumentation

Process Control and Instrumentation
For two non-interacting first order systems connected in series, the overall transfer function is the __________ of the individual transfer functions.

Difference
Ratio
Product
Sum

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Process Control and Instrumentation
Reset rate is the another term used for __________ time.

Derivative
Integral
Dead
None of these

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

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

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Process Control and Instrumentation
Liquid levels in autocalves are measued by

Glass gauge
None of these
Differential float type manometer
Simple float

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Process Control and Instrumentation
Which of the following controllers has the least maximum deviation?

P-controller
P-I controller
P-I-D controller
P-D controller

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Process Control and Instrumentation
Mass spectrometer is used for the composition analysis of

Alloys
Isotopes
None of these
Solids

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