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Process Control and Instrumentation

Process Control and Instrumentation
Mass spectrometer is used for the composition analysis of

Solids
Alloys
None of these
Isotopes

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Process Control and Instrumentation
Which of the following is an undesirable dynamic characteristic of an instrument?

Dead zone
Reproducibility
Time lag
Static error

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

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

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Process Control and Instrumentation
Platinum resistance thermometer can be used upto antimony point which is __________ °C, and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure.

1261.93
961.93
1064.43
630.74

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Process Control and Instrumentation
Nitrogen gas constant volume thermometer is suitable for measuring a temperature of __________ °C.

> 100
< 0
> 50
0-100

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

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

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