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Process Control and Instrumentation

Process Control and Instrumentation
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Log-log
Semi-log
Triangular
Ordinary

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Process Control and Instrumentation
The time constant of a first order process with resistance R and capacitance C is

RC
R - C
1/RC
R + C

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Process Control and Instrumentation
A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is

0.5
1
0.25
1/√2

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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?

None of these
Seebeck effect
Peltier effect
Thomson effect

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Process Control and Instrumentation
In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the __________ variable.

None of these
Controlled
Load
Manipulated

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Process Control and Instrumentation
Polarisation of light forms the working principle of a

Polarimeter
Polarograph
Chromatograph
Spectrometer

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