Chemical Engineering - Process Control and Instrumentation

11. 

Starting temperature of optical radiation pyrometer is __________ °C.

A. 800
B. 400
C. 1200
D. 1500

Answer: Option A

Explanation:

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12. 

Liquid argon level in a pressurised storage tank (at 3 kg/cm2 ) is measured by a/an

A. gage glass
B. external float gage
C. differential pressure gage
D. none of these

Answer: Option C

Explanation:

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13. 

Which of the systems having following transfer functions is stable?

A. 1/(s2+ 2)
B. 1/(s2-2s + 3)
C. 1/(s2 + 2s + 2)
D. exp(-20s)/(s2 + 2s-l)

Answer: Option C

Explanation:

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14. 

What is the dynamic error in a critically damped second order instrument for a ramp input (At) ?

A. 0.5 AT
B. 2 AT
C. AT
D. 1.5 AT

Answer: Option B

Explanation:

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15. 

The transfer function for a first order process with time delay is

A.
B.
C.
D.

Answer: Option B

Explanation:

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