Chemical Engineering - Process Control and Instrumentation

1. 

A non-linear chemical system is exemplified by a/an

A. isothermal CSTR
B. mixer
C. non-isothermal CSTR
D. none of these

Answer: Option C

Explanation:

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2. 

The transfer function for an ideal proportional plus reset controller (reset time T) is

A.
B. Kc(1 + TS)
C.
D.

Answer: Option A

Explanation:

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3. 

The frequency response of a first order system, has a phase shift with lower and upper bounds given by

A. - ∞, π/2
B. -π/2, π/2
C. -π/2, 0
D. 0, π/2

Answer: Option D

Explanation:

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4. 

Gas chromatography is used for the measurement of

A. temperature
B. pressure
C. concentration
D. flow rate

Answer: Option C

Explanation:

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5. 

Which of the following thermocouples can measure the maximum temperature ?

A. Platinum-rhodium
B. Tungsten-molybdenum
C. Chromel-alumel
D. Iron-constantan

Answer: Option B

Explanation:

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