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Process Control and Instrumentation

Process Control and Instrumentation
Which thermocouple can be used to measure a temperature of around 1400°C ?

Aluminium-chromel
Copper-constantan
Platinum-platinum+rhodium
None of these

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Process Control and Instrumentation
Hot wire anemometer is used for the measurement of

Thermal conductivity of gases
Flow rates of fluids
Very high temperature
Flow rates of granular solids

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

Tubular reactor
None of these
On-off controller
CSTR

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.

Differential linear expansion
Volumetric expansion
Increase of thermal conductivity
Increase of pressure

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Process Control and Instrumentation
Meleoid gauge measures the __________ pressure.

Atmospheric
Very high
Positive
Sub-atmospheric

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Process Control and Instrumentation
The transfer function of a pure dead time system with dead time τd is

Eτds
1/(τds + 1)
E-τds
Τds + 1

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