Chemical Engineering MCQs

Page No. 390

Compositional analysis of ______________ is done using mass spectrometer?


aAn isotope

✓


bNatural gas

✖


cA solid

✖


dAn alloy

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View Answer An isotope

Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference ?


aPeltier effect

✖


bThomson effect

✓


cSeebeck effect

✖


dNone of these

✖


View Answer Thomson effect

Liquid discharge from a tank or reservoir cannot be measured by __________________?


aOrificemeter

✓


bWeirs

✖


cWeirs

✖


dNotches

✖


View Answer Orificemeter

Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the ________________?


aMercury in glass thermometer

✖


bOptical pyrometer

✓


cIron-constantan thermocouple

✖


dAlcohol filled thermometer

✖


View Answer Optical pyrometer

Which of the following is a desirable characteristic of an instrument ?


aHigh drift

✖


bHigh fidelity

✓


cHigh measuring lag

✖


dPoor reproducibility

✖


View Answer High fidelity

Working principle of radiation pyrometer is based on the ________________?


aWien’s law

✖


bKirchoff’s law

✖


cStefan-Boltzmann law

✓


dSeebeck effect

✖


View Answer Stefan-Boltzmann law

The response of two tanks of same size and resistance in series is __________________?


aUnder damped

✖


bCritically damped

✓


cOver damped

✖


dNone of the above

✖


View Answer Critically damped

Which of the systems having following transfer functions is stable ?


a1/(s2 + 2)

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b1/(s2 – 2s + 3)

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c1/(s2 + 2s + 2)

✓


dexp (-20s)/(s2 + 2s – 1)

✖


View Answer 1/(s2 + 2s + 2)

Emission spectroscopy is used for__________________?


aSolids and metal analysis

✓


bDetermining water purity

✖


cDetermination of CO2 in gases

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dNOx determination

✖



Starting temperature of optical radiation pyrometer is ______________ °C?


a800

✓


b400

✖


c1200

✖


d1500

✖


View Answer 800

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