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Process Control and Instrumentation

Process Control and Instrumentation
__________ thermometer can not measure sub-zero (< 0° C) temperature,

Resistance
Vapor pressure
Mercury in glass
Bimetallic

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Process Control and Instrumentation
Phase lag of the frequency response of a second order system to a sinusoidal forcing function

Approaches 180° asymptotically
Is 120°
Is 90° at the most
Is 30°

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Process Control and Instrumentation
Bode diagram are generated from output response of the system subjected to which of the following input?

Ramp
Step
Impulse
Sinusoidal

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Process Control and Instrumentation
Which of the following is not a speed measuring instrument?

All of these
Psychrometer
Tachometer
Stroboscope

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Process Control and Instrumentation
With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer

Decreases
Increases
Increases exponentially
Remains constant

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Process Control and Instrumentation
Which of the following is not a composition measuring instrument?

Polarograph
Mass spectrometer
Hot wire anemometer
Thermal conductivity cell

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