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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 ____________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature ?
A Pressure
B Volume
C Viscosity
D All A., B. and C.
Correct Answer: All A., B. and C.
Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an ?
A Insulator
B Conductor
C Solid semi-conductor
D Liquid semi-conductor
Correct Answer: Solid semi-conductor
Thermistors are used in ____________ devices?
A Voltage measuring
B Temperature measuring
C Temperature compensating
D Both B. & C.
Correct Answer: Both B. & C.
The ____________ of a vapor pressure thermometer is a secondary element ?
A Pointer
B Bourdon tube
C Bulb
D None of these
Correct Answer: Bourdon tube
In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the ____________ variable?
A Load
B Manipulated
C Controlled
D None of these
Correct Answer: Load
Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?
A Radiation/infrared pyrometer
B Filled system thermometer
C Mercury in glass thermometer
D Thermo electric pyrometer
Correct Answer: Radiation/infrared pyrometer
A pyrheliometer is an instrument used for measuring the_________________?
A Bright sunshine period
B Beam radiation
C Diffuse radiation
D None of these
Correct Answer: Beam radiation
On-off controllers are normally used for________________?
A Low loads
B Temperature changes
C Flow rate changes
D None of these
Correct Answer: Low loads
A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if________________?
A Kc is reduced
B Kc is increased
C Integral control action is introduced
D Derivative control action is introduced
Correct Answer: Kc is increased
The unit step response of the transfer function (2s – 1)/[(3s + 1) (4s + 1)] reaches its final steady state asymptotically after _____________?
A A monotonic increase
B A monotonic decrease
C Initially increasing and then decreasing
D Increasing decreasing and then increasing
Correct Answer: A monotonic increase
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