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Process Control and Instrumentation

Process Control and Instrumentation
Mcleoid gauge is used to measure the

Vacuum
Point velocity
Pressure
Flow rate

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Process Control and Instrumentation
Which of the following is a desirable characteristic of an instrument?

High drift
High fidelity
Poor reproducibility
High measuring lag

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Process Control and Instrumentation
Optical activity of a solution can be determined using a

Refractrometer
Dilatometer
Polarimeter
Polarograph

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Process Control and Instrumentation
Pick out the first order system from among the following.

Damped vibrator
Non-interacting system of two tanks in series
Mercury in glass thermometer kept in boiling water
Interacting system of two tanks in series

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Process Control and Instrumentation
The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is

1
4
3
2

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Process Control and Instrumentation
Which of the following thermometers is not suitable for distant reading upto 60 metres?

Vapor pressure thermometer
Mercury in glass thermometer
Resistance thermometer
Constant volume gas thermometer

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