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Process Control and Instrumentation

Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a primary element.

Bulb
Bourdon tube
Pointer
None of these

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Process Control and Instrumentation
Paramagnetism method is not used for the composition determination of __________ in gases.

Carbon dioxide
Oxygen
Oxides of nitrogen
Any of these

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Process Control and Instrumentation
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches

1
∞
-1

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Process Control and Instrumentation
The transfer function of a pure dead time system with dead time τd is

E-τds
Τds + 1
Eτds
1/(τds + 1)

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Process Control and Instrumentation
A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in

Voltage
Flux density
Light intensity
Current

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Process Control and Instrumentation
The operation of a rotameter is based on

Rotation of a turbine
Pressure drop across a nozzle
Pressure at a stagnation point
Variable flow area

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