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Process Control and Instrumentation

Process Control and Instrumentation
A system with transfer function (2S/4S) + 1 is of __________ order.

1st
3rd
2nd
Zero

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Process Control and Instrumentation
Pick out the one which is a first order instrument.

Bare metallic thermometer
Bare vapor pressure thermometer
Mercury in glass thermometer (without any covering or air gap)
All of these

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Process Control and Instrumentation
The open loop transfer function of a control system is KR/(1 + TS) . This represents

Dead time system
A second order system
A first order time lag
A first order system

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

Optical pyrometer
Specially designed thermocouple
None of these Here
Radiation pyrometer

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Process Control and Instrumentation
In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.

Ordinary
Triangular
Log-lag
Semi-log

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Process Control and Instrumentation
Which of the following is never used as an element of industrial resistance thermometer?

Nickel
Lead
Copper
30% iron + 70% nickel

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