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Process Control and Instrumentation

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

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

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Process Control and Instrumentation
For an input forcing function, X(t) = 2t², the Laplace transform of this function is

2/s³
4/s²
4/s³
2/s²

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Process Control and Instrumentation
Which of the following instruments is not used for measuring sub-zero (<0°) temperatures?

Vapor pressure thermometer
Mercury in glass thermometer
Platinum resistance thermometer
Radiation pyrometer

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

Transient response
Frequency response
Regulator problem
Servo problem

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Process Control and Instrumentation
Dome temperature of blast furnace stove is most accurately measured by a

Radiation pyrometer
Iron-constantan thermocouple
Platinum-platinum/rhodium ther-mocuple
Platinum resistance thermometer

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Process Control and Instrumentation
With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer

Remains constant
Decreases
Increases exponentially
Increases

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MORE MCQ ON Process Control and Instrumentation

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