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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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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.

All Topics  9594

Typical specifications for design stipulates the gain margin and phase margin to be respectively__________________?
A > 1.7 and > 30°
B 30°
C < 1.7 and 1.7 and < 30°
D
Correct Answer: > 1.7 and > 30°
Instrumentation in a plant offers the advantage of_______________?
A Greater safety of operation
B Better quality of product
C Greater operation economy
D All A., B. and C.
Correct Answer: All A., B. and C.
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their ?
A Low thermal conductivity
B Low electrical conductivity
C High viscosity index
D Low flash point
Correct Answer: Low electrical conductivity
Routh stability method uses ______________ loop transfer function?
A Open
B Closed
C Either A. or B.
D Neither A. nor B.
Correct Answer: Closed
The function of a transducer is to _______________ ?
A Modify the input signal
B Amplify the input signal
C Convert the primary signal into a more useful quantity, usually an electric impulse
D Codify/decodify the input signal
Correct Answer: Convert the primary signal into a more useful quantity, usually an electric impulse
_______________ thermometer cannot measure sub-zero (< 0° C) temperature ?
A Mercury in glass
B Bimetallic
C Vapor pressure
D Resistance
Correct Answer: Bimetallic
A mercury thermometer cannot be used to measure the temperature below the freezing point of mercury, which is _____________ °C?
A -38.9
B -11.9
C -60.9
D -80.9
Correct Answer: -38.9
The second order system with the transfer function 4/(s2 + 2s + 4) has a damping ratio of ___________________?
A 2.0
B 0.5
C 1.0
D 4.0
Correct Answer: 0.5
The calibration data of a thermocouple with its cold junction at 0°C are given below. The hot junction of the thermocouple is placed in a bath at 80°C, while its cold junction is at 20°C. What is the emf of thermocouple ?
A 3.26 mv
B 0.80 mv
C 2.46 mv
D 2.43 mv
Correct Answer: 2.46 mv
Presence of a small amount of water in the organic systems can be determined by the _____________ method?
A Electrical conductivity
B Polarimetry
C Emission spectroscopy
D Dielectric constant end loss factor
Correct Answer: Dielectric constant end loss factor
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