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Process Control and Instrumentation

Process Control and Instrumentation
Response of a linear control system for a change in set point is called

Regulator problem
Frequency response
Servo problem
Transient response

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Process Control and Instrumentation
A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is

0.5
1
1/√2
0.25

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Process Control and Instrumentation
Which is the most suitable instrument for measuring pressure below 3 microns?

Bourdon guage
Alphatron
Mcleoid gauge
Ionisation gauge

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Process Control and Instrumentation
Thermocouple is suitable for measuring

Both high and low temperatures
Liquid temperatures only
Very low temperatures only
Very high temperatures only

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Process Control and Instrumentation
A barometer measures the __________ pressure.

Dynamic
Gauge
Absolute
Absolute as well as gauge

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Process Control and Instrumentation
Turbine flow meters are suitable for

Both B and C
Very limited flow ranges
Aerospace and in air borne applications
Cryogenic flow measurements

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