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Process Control and Instrumentation

Process Control and Instrumentation
A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is

0.25
0.5
1
1/√2

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Process Control and Instrumentation
Flow rate of a river is measured by a/an

Open weir
Vane meter
Pitot tube
Kennison nozzle

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Process Control and Instrumentation
Thermocouple is suitable for measuring

Both high and low temperatures
Very low temperatures only
Liquid temperatures only
Very high temperatures only

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Process Control and Instrumentation
__________ is the static characteristics of an instrument,

Drift
Dynamic error
Response
Tine lag

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Process Control and Instrumentation
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches

∞
1
-1

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

1/S
1/S²
1
1/(S² + 1)

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