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Process Control and Instrumentation

Process Control and Instrumentation
Liquid discharge from a tank or reservoir can not be measured by

Mouthpieces
Notches
Orificemeters
Weirs

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Process Control and Instrumentation
The response of two tanks of same size and resistance in series is

Under damped
None of these
Critically damped
Over damped

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Process Control and Instrumentation
The transfer function of a process is 1/(16s² + 8s + 4). If a step change is introduced into the system, then the response will be

None of these
Over damped
Critically damped
Under damped

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Process Control and Instrumentation
A non-linear chemical system is exemplified by a/an

None of these
Mixer
Isothermal CSTR
Non-isothermal CSTR

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Process Control and Instrumentation
Starting temperature of optical radiation pyrometer is __________ °C.

400
1200
800
1500

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Process Control and Instrumentation
A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency. This is __________ criterion.

Bode stability
None of these
Nyquist
Routh stability

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