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Process Control and Instrumentation

Process Control and Instrumentation
Thermistors are made of

Ultra pure metals
Iron-copper alloys
Metal oxides
Nickel-chromium alloys

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Process Control and Instrumentation
Use of I-control along with P-control facilitates

Reduction of stability time
Elimination of offset
None of these
Reduction of offset

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Process Control and Instrumentation
Which is the most suitable instrument for measuring pressure below 3 microns?

Alphatron
Ionisation gauge
Bourdon guage
Mcleoid gauge

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Process Control and Instrumentation
A manometer measures the __________ pressure.

Atmospheric
Absolute
None of these
Gauge

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Process Control and Instrumentation
Thermistors are used in __________ devices.

Voltage measuring
Temperature measuring
Both B & C
Temperature compensating

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Process Control and Instrumentation
Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.

- 39 and 350
- 51 and 439
- 10 and 425
- 79 and 395

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