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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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.

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

Correct Answer: A monotonic increase

Thermal wells used in temperature measurements should have __________________?

A Very thick walls

B Low emissivity

C Polished surface

D High transmissivity of radiation

Review Detailed Answer

Correct Answer: High transmissivity of radiation

Pressure of 0.0001 absolute psi can be measured by _____________ gauge?

A Mcleod

B Pirani

C Thermocouple

D None of these

Review Detailed Answer

Correct Answer: Mcleod

Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is_______________?

A Chromel-alumel

B Iron-constantan

C Platinum-platinum + rhodium

D Either A., B. or C.

Review Detailed Answer

Correct Answer: Platinum-platinum + rhodium

Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion ?

A Nickel

B Brass

C Chromel

D Invar

Review Detailed Answer

Correct Answer: Brass

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the ____________ variable?

Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?

A pyrheliometer is an instrument used for measuring the_________________?

On-off controllers are normally used for________________?

A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if________________?

The unit step response of the transfer function (2s – 1)/[(3s + 1) (4s + 1)] reaches its final steady state asymptotically after _____________?

Thermal wells used in temperature measurements should have __________________?

Pressure of 0.0001 absolute psi can be measured by _____________ gauge?

Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is_______________?

Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion ?