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Process Control and Instrumentation

Process Control and Instrumentation
Meleoid gauge measures the __________ pressure.

Sub-atmospheric
Atmospheric
Positive
Very high

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Process Control and Instrumentation
A control system has the following transfer function F(s) = (s - 1)(s + 1)/s(s - 2)(s + 4)The initial value of the corresponding time function is

44020
1
43838
-1

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Process Control and Instrumentation
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a

Magnetic flowmeter
Flow nozzle type flowmeter
Turbine flowmeter
Pitot tube

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Process Control and Instrumentation
The level of a liquid under pressure can be determined using

Air-trap system
Differential pressure manometer
Bubbler system
Diaphragm box system

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Process Control and Instrumentation
What is the dynamic error in a critically damped second order instrument for a ramp input (AT)?

√AT
1.5 AT
0.5 AT
2 AT

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Process Control and Instrumentation
In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the __________ variable.

Manipulated
None of these
Controlled
Load

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