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Process Control and Instrumentation

Process Control and Instrumentation
Degree to which an instrument indicates the changes in measured variable without dynamic error is called its

Speed of response
Fidielity
Reproducibility
Static characteristics

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Process Control and Instrumentation
The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to

D⁴
D²
D
D³

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Process Control and Instrumentation
Liquid levels in autocalves are measued by

Differential float type manometer
None of these
Glass gauge
Simple float

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Process Control and Instrumentation
The initial value (t=0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is

43832
2
1

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Process Control and Instrumentation
Compositional analysis of __________ is done using mass spectrometer.

A solid
An isotope
An alloy
Natural gas

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Process Control and Instrumentation
Stroboscope is used for the measurement of

Frequency of light
Rpm of a flywheel
Liquid level under pressure
Depression of freezing point

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