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Process Control and Instrumentation

Process Control and Instrumentation
The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.

750
1000
250
500

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Process Control and Instrumentation
Turbine flow meters are suitable for

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

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Process Control and Instrumentation
Flame photometry is used for the determination of compositional analysis of

Natural gas
Isotopes
Solids
Alkali metals

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Process Control and Instrumentation
Phase lag of the sinusoidal response of a first order system is

90°
120°
30°
180°

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Process Control and Instrumentation
A sinusoidal variation in the input passing through a linear first order system

Gets amplified (magnitude increases)
Becomes more oscillatory (frequency increases)
Becomes less oscillatory (frequency decreases)
Gets attenuated (magnitude decreases)

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Process Control and Instrumentation
A stable system is the one

None of these
Which satisfies the conditions for a servo problem
Which exhibits an unbounded response to a bounded input
For which the output response is bounded for all bounded input

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