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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

The initial value (t = 0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is__________________?
A 0
B ½
C 1
D 2
Correct Answer: ½
Stabilising time for the controllers is the time required for the response to reach _____________ percent of its ultimate value?
A 63.2
B 87.5
C 95
D 100
Correct Answer: 95
Thermistors are made of__________________?
A Ultra pure metals
B Metal oxides
C Iron-copper alloys
D Nickel-chromium alloys
Correct Answer: Metal oxides
A pyranometer is an instrument used for measuring the___________________?
A Beam radiation
B Global radiation
C Bright sunshine period
D None of these
Correct Answer: Global radiation
The transfer function for an ideal proportional plus reset controller (reset time T) is_______________?
A Kc[1 + (1/TS)]
B Kc(1 + TS)
C Kc/(1 + TS)
D Kc/[1 + (s/T)]
Correct Answer: Kc[1 + (1/TS)]
Radiation thermometer cannot measure the temperature ___________________?
A Inside a pressure vessel
B Of an object without coming in contact with it
C Of liquid oxygen
D Of moving objects at high temperature
Correct Answer: Of liquid oxygen
Which of the following thermocouples has the least temperature measurement range ?
A Copper-constantan
B Chromel-alumel
C Platinum-platinum/rhodium
D Iron-constantan
Correct Answer: Copper-constantan
Platinum resistance thermometer can be used upto antimony point which is ____________ °C, and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure?
A 961.93
B 630.74
C 1064.43
D 1261.93
Correct Answer: 630.74
Temperature of _____________ cannot be measured by an optical or radiation pyrometer?
A Hot blast (air) from stoves
B Molten slag flowing out of blast furnace
C Combustion space in boilers
D Rotary limestone calcination kiln
Correct Answer: Hot blast (air) from stoves
The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since______________?
A The function is exponential
B The Laplace transform of integral of exp(at) has finite values only for s > a
C The Laplace transform integral of exp(at) has initial values only for s > a
D The function exp(at) is piece-wise continuous only for s > a
Correct Answer: The Laplace transform of integral of exp(at) has finite values only for s > a
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