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Process Control and Instrumentation

Process Control and Instrumentation
The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly

Parabolic
Non-linear
Linear
Hyperbolic

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

3rd
2nd
Zero
1st

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Process Control and Instrumentation
The level of a liquid under pressure can be determined using

Differential pressure manometer
Air-trap system
Bubbler system
Diaphragm box system

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Process Control and Instrumentation
Which of the following thermocouples is capable of measuring a temperature of -50°C?

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

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Process Control and Instrumentation
Which of the following controllers has the least maximum deviation?

P-D controller
P-I-D controller
P-controller
P-I controller

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Process Control and Instrumentation
The unit step response of the transfer function 1/(s² + 2s + 3)

Has a non-zero slope at the origin
Is overdamped
Is unstable
Has a damped oscillatory characteristics

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