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Process Control and Instrumentation

Process Control and Instrumentation
Which thermocouple can be used to measure a temperature of around 1400°C ?

None of these
Platinum-platinum+rhodium
Aluminium-chromel
Copper-constantan

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Process Control and Instrumentation
A non-linear chemical system is exemplified by a/an

None of these
Non-isothermal CSTR
Mixer
Isothermal CSTR

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Process Control and Instrumentation
Thermistors are made of

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

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Process Control and Instrumentation
Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference?

Thomson effect
Seebeck effect
Peltier effect
None of these

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Process Control and Instrumentation
Concentration of sugar solution can be determined by the

Flame photometry
Emission spectroscopy
Polarimetry
Oscillometry

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

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