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Process Control and Instrumentation

Process Control and Instrumentation
What is the Laplace transform of impulse input having magnitude 'X' ?

1
1/X
X
X²

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Process Control and Instrumentation
The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.

500
250
750
1000

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Process Control and Instrumentation
The operation of a rotameter is based on

Pressure at a stagnation point
Variable flow area
Pressure drop across a nozzle
Rotation of a turbine

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Process Control and Instrumentation
Dome temperature of blast furnace stove is most accurately measured by a

Platinum resistance thermometer
Platinum-platinum/rhodium ther-mocuple
Radiation pyrometer
Iron-constantan thermocouple

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Process Control and Instrumentation
__________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'

Celcius
Farenhite
Rankine
Reumur

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Process Control and Instrumentation
The term analogous to the electrical current in a thermal system is the

Heat flow rate
Heat content in the system
Temperature difference
None of these

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