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Process Control and Instrumentation

Process Control and Instrumentation
Identify an unbounded input from inputs whose transfer functions are given below

1/S
1/(S² + 1)
1
1/S²

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Process Control and Instrumentation
Alphatron measures pressure __________ microns.

< 3
< 0.1
> 3
< 1

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

Mouthpieces
Weirs
Notches
Orificemeters

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

Orifice meter
V-notch
Rectangular weir
Cipolletti weir

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Process Control and Instrumentation
Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is

Paraffin
Ethylene glycol
Water
Carbon tetrachloride

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Process Control and Instrumentation
A typical example of a physical system with under damped characteristic is a

Thermocouple kept immersed in a liquid filled thermowell
CSTR with first order reaction
Spring loaded diaphragm valve
U-tube manometer

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