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Process Control and Instrumentation

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

Thomson effect
None of these
Seebeck effect
Peltier effect

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Process Control and Instrumentation
Typical specifications for design stipulates the gain margin and phase margin to be respectively

< 1.7 and < 30°
> 1.7 and < 30°
> 1.7 and > 30°
< 1.7 and > 30°

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Process Control and Instrumentation
High temperature of around 2000°C of incandescent gas mantles is measured by a/an

Radiation pyrometer
None of these Here
Optical pyrometer
Specially designed thermocouple

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Process Control and Instrumentation
Thermistors are made of

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

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Process Control and Instrumentation
Which of the following is not the triple point of water?

273°K
32°R
492°R
32°F

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Process Control and Instrumentation
Response of a system to a sinusoidal input is called __________ response.

Unit step
None of these
Impluse
Frequency

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