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Process Control and Instrumentation

Process Control and Instrumentation
Flow rate of a river is measured by a/an

Open weir
Vane meter
Pitot tube
Kennison nozzle

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Process Control and Instrumentation
When a bare thermocouple is covered by a protective sheath, the response becomes

Faster and non-oscillatory
Slower and oscillatory
Slower and non-oscillatory
Faster and oscillatory

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Process Control and Instrumentation
Stroboscope is used for the measurement of

Frequency of light
Depression of freezing point
Rpm of a flywheel
Liquid level under pressure

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Process Control and Instrumentation
0n-off control which is a special case of proportional control, has a band width of about __________ percent.

75
100
25

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Process Control and Instrumentation
__________ are analysed using a polarograph.

Gases
Liquids
Isotonic solutions
Solids

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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
1/(τds + 1)
Eτds

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