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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.

Identify an unbounded input from inputs whose transfer functions are given below______________?

A 1

B 1/S

C 1/S2

D 1/(S2 + 1)

Review Detailed Answer

Correct Answer: 1

The transfer function of a first order system is______________?

A 1/(Ts + 1)

B 1/Ts

C s/(Ts + 1)

D None of these

Review Detailed Answer

Correct Answer: 1/(Ts + 1)

Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1) ?

A w = 1/√14, Kc = 45/7 √14

B w = √(7/6), Kc = 46/3

C w = 1, Kc = 13

D w = √(7/8), Kc = 45/4

Review Detailed Answer

Correct Answer: w = √(7/6), Kc = 46/3

Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by__________________?

A Filling nitrogen under pressure in the stem

B Increasing the diameter of the tube

C Using steel tube in place of glass tube

D Accounting for the tube expansion

Review Detailed Answer

Correct Answer: Filling nitrogen under pressure in the stem

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

Review Detailed Answer

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

Review Detailed Answer

Correct Answer: 95

Thermistors are made of__________________?

A Ultra pure metals

B Metal oxides

C Iron-copper alloys

D Nickel-chromium alloys

Review Detailed Answer

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

Review Detailed Answer

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)]

Review Detailed Answer

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

Review Detailed Answer

Correct Answer: Of liquid oxygen

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Identify an unbounded input from inputs whose transfer functions are given below______________?

The transfer function of a first order system is______________?

Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1) ?

Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by__________________?

The initial value (t = 0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is__________________?

Stabilising time for the controllers is the time required for the response to reach _____________ percent of its ultimate value?

Thermistors are made of__________________?

A pyranometer is an instrument used for measuring the___________________?

The transfer function for an ideal proportional plus reset controller (reset time T) is_______________?

Radiation thermometer cannot measure the temperature ___________________?