Chemical Engineering · all questions

Process Control And Instrumentation
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Q281

An aneroid barometer measures the __________ pressure.

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Q282

Meleoid gauge measures the __________ pressure.

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Q283

A manometer measures the __________ pressure.

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Q284

Which of the following thermocouples is capable of measuring a temperature of -50°C?

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Q285

Which of the following is not a variable area flow meter?

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Q286

Platinum resistance thermometer can be used upto antimony point which is __________ °C, and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure.

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Q287

Thermal conductivity cell is the primary element of a/an __________ analyser.

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Q288

Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their

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Q289

The transfer function of a process is

\frac{1}{16 s ^{2} + 8 s + 4} .

If a step change is introduced into the system, then the response will be

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Q290

Which of the following thermocouples has the least temperature measurement range?

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Q291

Which thermocouple can be used to measure a temperature of around 1400°C ?

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Q292

The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly

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Q293

Reset rate is the another term used for __________ time.

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Q294

Pyrometry refers to the measurement of temperature

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Q295

For measuring the temperature of a red hot furnace, which is the most suitable instrument?

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Q296

Thermal wells are used in the temperature measurement to

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Q297

Thermocouple in a thermal well behaves as a true

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Q298

Thermistors are made of

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Q299

For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a

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Q300

Suppose that the gain, time constant and dead time of a process with the following transfer function:G_c(s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain K_c of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as

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