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Process Control and Instrumentation

Process Control and Instrumentation
Pyrometry refers to the measurement of temperature

Which is of higher magnitude
All of these
With the mercurial thermometer upto 350°C
Directly

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Process Control and Instrumentation
Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.

0.0001
0.001
0.1
0.01

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Process Control and Instrumentation
A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is

-180°
45°
-90°
-45°

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

750
500
250
1000

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Process Control and Instrumentation
A manometer measures the __________ pressure.

None of these
Gauge
Atmospheric
Absolute

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Process Control and Instrumentation
The temperature range for which copper resistance thermometer can be used is __________ °C

-200 to 150
350 to 750
500 to 900
0 to 150

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