Process Control & Instrumentation Mcqs for Chemical

Q.  An aneroid barometer measures the _____________ pressure?

a. Atmospheric
b. Absolute
c. Vacuum
d. Gage


ANSWER: See Answer
 
No explanation is available for this question!
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MCQs:  The experimental response of the controlled variable y(t) for a step change of magnitude ‘P’ in the manipulated variable x(t) is shown below: The appropriate transfer function of the process is_________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Mercury manometer (U-tube type) exemplifies a ______________ order system?
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MCQs:  Liquid argon level in a pressurised storage tank (at 3 kg/cm2) is measured by a/an ____________________?
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MCQs:  E.m.f. generated by thermocouples is of the order of ________________?
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MCQs:  The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Paramagnetism method is not used for the composition determination of ______________ in gases?
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MCQs:  Suppose that the gain, time constant and dead time of a process with the following transfer function: Gc(s) = 10 exp( – 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Transfer function of transportation lag is___________________?
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MCQs:  An amplitude ratio of 0.1 corresponds to _____________ decibels?
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MCQs:  Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is ___________________?
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MCQs:  What is the dynamic error in a critically damped second order instrument for a ramp input (At) ?
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MCQs:  Which of the systems having the following transfer function is stable ?
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MCQs:  Which of the following fluid flow measuring devices can measure the largest flow rate ?
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MCQs:  The operation of a Rotameter is based on ________________?
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MCQs:  The unit step response of the transfer function 1/(s2 + 2s + 3) _______________________?
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MCQs:  Bode stability method uses ____________ loop transfer function?
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MCQs:  For an input forcing function, X(t) = 2t2, the Laplace transform of this function is________________?
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MCQs:  The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly__________________?
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MCQs:  Thermal conductivity cell is the primary element of a/an _____________ analyser?
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MCQs:  The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an _____________ thermocouple?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts