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Process Control and Instrumentation

Process Control and Instrumentation
Emission spectroscopy is used for

Determining water purity
NOxdetermination
Determination of CO₂ in gases
Solids and metal analysis

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Process Control and Instrumentation
When a bare thermocouple is covered by a protective sheath, the response becomes

Slower and non-oscillatory
Faster and non-oscillatory
Slower and oscillatory
Faster and oscillatory

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Process Control and Instrumentation
Routh stability method uses __________ loop transfer function.

Closed
Neither A nor B
Either A or B
Open

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Process Control and Instrumentation
Thermisters which have a very high temperature co-efficient of resistivity belong to the class of solid called

Conductors
Semi conductors
Dielectrics
Insulators

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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

Turbine flowmeter
Pitot tube
Flow nozzle type flowmeter
Magnetic flowmeter

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Process Control and Instrumentation
Mercury manometer (U-tube type) exemplifies a __________ order system.

Zero
Third
Second
First

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