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Process Control and Instrumentation

Process Control and Instrumentation
A control system has the following transfer function F(s) = (s - 1)(s + 1)/s(s - 2)(s + 4)The initial value of the corresponding time function is

-1
1
44020
43838

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Process Control and Instrumentation
Which of the following thermocouples has the widest temperature measurement range?

Chromel-alumel
Iron-constantan
Platinum-platinum/rhodium
Copper-constantan

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Process Control and Instrumentation
Liquid flow rate in an open channel can not be measured by a/an

Orifice meter
Rectangular weir
Cipolletti weir
V-notch

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

Chromatograph
Polarimeter
Polarograph
Spectrometer

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Process Control and Instrumentation
If response of a control system is to be free of offset and oscillation, the most suitable controller is

Proportional-integral (PI) controller
Proportional controller
Proportional-derivative(PD)controller
Proportional integral-derivative (PID) controller

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

1st
2nd
Zero
3rd

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