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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

Radiation pyrometers as compared to thermocouples____________________?

A Has a slower speed of response

B Can measure higher temperature

C Can’t measure the temperature of moving objects

D Is more affected by corrosive atmosphere

Review Detailed Answer

Correct Answer: Can measure higher temperature

Number of poles in a system with transfer function 1/(s2 + 2s2 + 1) is ________________?

A 2

B 5

C 3

D 1

Review Detailed Answer

Correct Answer: 3

Thermocouple in a thermal well behaves as a true ________________?

A First order system

B Second order system (overdamped)

C Multiple first order system

D Second order system (underdamped)

Review Detailed Answer

Correct Answer: Multiple first order system

Stability of a control system containing a transportation lag can be best analysed by_______________?

A Routh test

B Root locus methods

C Frequency response methods

D None of these

Review Detailed Answer

Correct Answer: Frequency response methods

Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?

A Enhancement or attenuation of radiation occurs in the sighting path

B Object and surrounding are at almost the same temperature

C Object has varying emissivity

D Object is transparent

Review Detailed Answer

Correct Answer: Object and surrounding are at almost the same temperature

The open loop transfer function of a process is K [{(s + 1) (s + 4)}/{(s + 2) (s + 3)}]. In the root locus diagram, the poles will be at ___________________?

A -1, -4

B 1, 4

C -2, -3

D 2, 3

Review Detailed Answer

Correct Answer: -2, -3

Feed forward controller accounts for the ______________ changes?

A Set point

B Load

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Load

Thermal wells are used in the temperature measurement to____________________?

A Guard against corrosive and oxidising action on thermocouple materials

B Reduce measuring lag

C Increase the fidelity

D Increase the sensitivity

Review Detailed Answer

Correct Answer: Guard against corrosive and oxidising action on thermocouple materials

Liquid flow rate in a small channel is best measured by a/an____________________?

A Weir

B Pitot tube

C Vane meter

D Venturimeter

Review Detailed Answer

Correct Answer: Pitot tube

A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is______________?

A 45°

B -90°

C -180°

D -45°

Review Detailed Answer

Correct Answer: 45°

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Radiation pyrometers as compared to thermocouples____________________?

Number of poles in a system with transfer function 1/(s2 + 2s2 + 1) is ________________?

Thermocouple in a thermal well behaves as a true ________________?

Stability of a control system containing a transportation lag can be best analysed by_______________?

Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?

The open loop transfer function of a process is K [{(s + 1) (s + 4)}/{(s + 2) (s + 3)}]. In the root locus diagram, the poles will be at ___________________?

Feed forward controller accounts for the ______________ changes?

Thermal wells are used in the temperature measurement to____________________?

Liquid flow rate in a small channel is best measured by a/an____________________?

A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is______________?