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Process Control and Instrumentation

Process Control and Instrumentation
Continuous measurement of specific gravity of a liquid is done by

Hydrometer
Displacement meter
Contact-type electric indicators
Both A and C

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Process Control and Instrumentation
The function of a transducer is to

Convert the primary signal into a more useful quantity, usually an electric impulse
Modify the input signal
Codify/decodify the input signal
Amplify the input signal

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

Orifice meter
Cipolletti weir
V-notch
Rectangular weir

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Process Control and Instrumentation
An amplitude ratio of 0.1 corresponds to __________ decibels.

20
10
-10
-20

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

1500
400
1200
800

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

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

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