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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

Working principle of mercury in glass thermometer is__________________?
A Volumetric expansion
B Pressure rise with temperature
C Linear expansion
D None of these
Correct Answer: Volumetric expansion
In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit__________________?
A Overdamped response
B Underdamped response
C Undamped response
D Unstable response
Correct Answer: Underdamped response
A typical example of a physical system with under damped characteristic is a____________________?
A U-tube manometer
B Spring loaded diaphragm valve
C CSTR with first order reaction
D Thermocouple kept immersed in a liquid filled thermowell
Correct Answer: Spring loaded diaphragm valve
“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?
A Bode stability
B Nyquist
C Routh stability
D None of these
Correct Answer: Bode stability
In a second order under damped system, the_________________?
A Time required for the response of first reach its ultimate value is called the response time
B Overshoot (which is a measure of how much the response exceeds the ultimate value) increase
C Decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of
D None of these
Correct Answer: Overshoot (which is a measure of how much the response exceeds the ultimate value) increase
Which of the following cannot measure a temperature of 1600°C ?
A Platinum resistance thermometer
B Thermocouple
C Photo-electric pyrometer
D Radiation pyrometer
Correct Answer: Platinum resistance thermometer
Which of the following instruments is not used for measuring sub-zero (<0°) temperatures ?
A Platinum resistance thermometer
B Mercury in glass thermometer
C Vapor pressure thermometer
D Radiation pyrometer
Correct Answer: Radiation pyrometer
Maximum differential pressure in liquid manometer is ______________ psi?
A 20
B 30
C 40
D 50
Correct Answer: 30
Which is the strongest paramagnetic gas ?
A CO2
B O2
C NO
D NO2
Correct Answer: O2
Liquid column manometers are used for measuring the pressure ______________ kgf/cm2?
A > 2 (gage)
B < 3 (gage)
C < 10 (gage)
D < atmospheric
Correct Answer: < 3 (gage)
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