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Process Control and Instrumentation

Process Control and Instrumentation
Flame photometry is used for the determination of compositional analysis of

Natural gas
Alkali metals
Solids
Isotopes

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Process Control and Instrumentation
A non-linear system will have __________ steady state values.

Three
Two
One
More than one

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Process Control and Instrumentation
Identify an unbounded input from inputs whose transfer functions are given below

1
1/S
1/S²
1/(S² + 1)

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Process Control and Instrumentation
A bolometer is

Used for the measurement of thermal radiation
An element which senses optical input and delivers thermal output
Both A & B Here
Neither A nor B Here

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Process Control and Instrumentation
Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature

Rusting of iron takes place
Embrittlement of iron occurs
Emf produced is very low of the order of microvolt
Both B and C Here

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Process Control and Instrumentation
The time constant of a first order process with resistance R and capacitance C is

R + C
1/RC
RC
R - C

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