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Process Control and Instrumentation

Process Control and Instrumentation
Photoelectric pyrometers are suitable in the temperature range of __________ °C.

400-1000
800-2500
800-1600
400-1600

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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
The inverse Laplace transform of the function f(s) = 1/S(1 + S) is

1 - e-t
1 - et
1 + et
1 + e-t

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Process Control and Instrumentation
Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.

0.1
0.01
0.0001
0.001

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Process Control and Instrumentation
Which of the following is not a differential pressure flow meter?

Flow nozzle
Rotameter
Venturimeter
Orificemeter

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Process Control and Instrumentation
Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.

Vycor (a glass)
Nichrome
Inconel
Steel

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