M C Q s D r i v e

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.

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_________________?
A (Q/P) e-(Q/R)S/(TdS + 1)
B (Q/R) e-TdS/(Q/P) (S + 1)
C (Q/P) e-TdS/(Q/R) (S + 1)
D (Q/R) e-(P/Q)S/(TdS + 1)
Correct Answer: (Q/P) e-TdS/(Q/R) (S + 1)
Smoke density of the flue gas going out of the chimney is measured by a __________________?
A Polarograph
B Thermal conductivity meter
C Photo electric cell
D Chromatograph
Correct Answer: Photo electric cell
Characteristic equation is the denominator of ____________ loop transfer function?
A Open
B Closed
C Both A. and B.
D Neither A. nor B.
Correct Answer: Closed
Measurement of sub-zero Celsius temperature in industry is done most commonly by __________________?
A Thermocouples
B Resistance thermometers
C Gas thermometers
D Bi-metallic thermometers
Correct Answer: Resistance thermometers
Which of the following is not the triple point of water ?
A 32°R
B 273°K
C 492°R
D 32°F
Correct Answer: 32°R
Flow rate through an orifice is _____________ the pressure differential?
A Proportional to
B Inversely proportional to the square root of
C Proportional to the square root of
D Inversely proportional to the square of
Correct Answer: Proportional to
What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?
A 1
B > 1
C < 1
D None of these
Correct Answer: 1
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?
A Thermocouple
B Resistance thermometer
C Mercury in glass thermometer
D Vapor pressure thermometer
Correct Answer: Thermocouple
Time constant is the __________________?
A Time taken by the controlled variable to reach 63.2% of its full change
B Same as transportation lag
C Same as dead time
D Time required by the measured variable to reach 63.2% of its ultimate change
Correct Answer: Time taken by the controlled variable to reach 63.2% of its full change
The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C?
A 250
B 500
C 750
D
Correct Answer: 500