Chemical Engineering · all questions

Process Control And Instrumentation
practice.

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318

Questions

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Q221

Open question

Which of the following is not a second order instrument?

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Q222

Open question

Which of the following is not the triple point of water?

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Q223

Open question

The frequency response of a first order system, has a phase shift with lower and upper bounds given by

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Q224

Open question

Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.

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Q225

Open question

pH meter has

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Q226

Open question

Phase margin is equal to

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Q227

Open question

Pick out the wrong statement

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Q228

Open question

Pick out the wrong statement.

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Q229

Open question

Pick out the wrong statement.

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Q230

Open question

Emf generated in a thermocouple depends on the temperature

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Q231

Open question

Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by

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Q232

Open question

Psychrometer determines the

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Q233

Open question

Temperature of __________ can not be measured by an optical or radiation pyrometer.

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Q234

Open question

The characteristic equation for the control system with a closed loop transfer function

\frac{G _{1}}{1 + G _{2}}

is given by

1 + G_{2} = 0

The characteristic equation for the control system

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Q235

Open question

Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?

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Q236

Open question

Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are

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Q237

Open question

The temperature range for which copper resistance thermometer can be used is __________ °C

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Q238

Open question

Number of poles in a system with transfer function

\frac{1}{s ^{2} + 2 s ^{2} + 1}

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Q239

Open question

Bourdon gauges are used for measuring pressure (kg/cm² )

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Q240

Open question

Which of the following is an undesirable dynamic characteristic of an instrument?

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Process Control And Instrumentationpractice.

Process Control And Instrumentation
practice.