Chemical Engineering MCQs

Page No. 390

Compositional analysis of ______________ is done using mass spectrometer?


aAn isotope


bNatural gas


cA solid


dAn alloy


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)


b1/(s2 – 2s + 3)


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


dNOx determination



Starting temperature of optical radiation pyrometer is ______________ °C?


a800


b400


c1200


d1500


View Answer 800

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