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Process Control and Instrumentation

Process Control and Instrumentation
__________ is an example of distributed parameter system

CSTR
Tubular reactor
On-off controller
None of these

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Process Control and Instrumentation
A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in

Flux density
Voltage
Light intensity
Current

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Process Control and Instrumentation
Bimetal strips are not used in

Relays for opening & closing of electrical circuits
Thermostats
Thermocouples
Bimetallic thermometers

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Process Control and Instrumentation
Working principle of radiation pyrometer is based on the

Wien's law
Seebeck effect
Stafan-Boltzman law
Kirchoffs law

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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
Magnetic flowmeter
Pitot tube
Flow nozzle type flowmeter

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Process Control and Instrumentation
Concentration of sugar solution can be determined by the

Emission spectroscopy
Polarimetry
Oscillometry
Flame photometry

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