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Process Control and Instrumentation

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

1/(S² + 1)
1/S
1
1/S²

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Process Control and Instrumentation
The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature.

Viscosity
All of these
Pressure
Volume

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Process Control and Instrumentation
Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.

Centigrade
Fahrenheit
Kelvin
Reaumer

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Process Control and Instrumentation
Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the

Mercury in glass thermometer
Alcohol filled thermometer
Optical pyrometer
Iron-constantan thermocouple

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Process Control and Instrumentation
A barometer measures the __________ pressure.

Gauge
Dynamic
Absolute
Absolute as well as gauge

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Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

Chromel-alumel
Iron-constantan
None of these
Platinum-platinum+rhodium

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