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Process Control and Instrumentation

Process Control and Instrumentation
Pressure of 0.0001 absolute psi can be measured by __________ gauge

None of these
Thermocouple
Pirani
Mcloid

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Process Control and Instrumentation
The unit of 'time constant' of a system is the same as that of

Velocity
(time)⁻¹
Time
None of these

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

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

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Process Control and Instrumentation
Temperature measuring instruments are standardised mostly with __________ points of pure substances.

Neither A nor B Here
Both A & B Here
Boiling
Melting

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

E-τds
Eτds
Τds + 1
1/(τds + 1)

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Process Control and Instrumentation
pH meter has

Three cells
Two cells
One cell
No cell

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