MCQsDrive | MCQsDrive

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.

What is the dynamic error in a critically damped second order instrument for a ramp input (At) ?

A 0.5 AT

B 2 AT

C √(AT)

D 1.5 AT

Review Detailed Answer

Correct Answer: 2 AT

Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is ___________________?

A Chromel-alumel

B Iron-constantan

C Platinum-rhodium

D Platinum-platinum + rhodium

Review Detailed Answer

Correct Answer: Iron-constantan

An amplitude ratio of 0.1 corresponds to _____________ decibels?

A 20

B -20

C 10

D -10

Review Detailed Answer

Correct Answer: 20

Transfer function of transportation lag is___________________?

A eTS

B e-TS

C 1/(Ts + 1)

D None of these

Review Detailed Answer

Correct Answer: e-TS

Suppose that the gain, time constant and dead time of a process with the following transfer function: Gc(s) = 10 exp( – 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as________________?

A 8, 0.6, 0.08

B 12, 0.6, 0.12

C 8, 0.6, 0.12

D 12, 0.4, 0.08

Review Detailed Answer

Correct Answer: 12, 0.6, 0.12

Paramagnetism method is not used for the composition determination of ______________ in gases?

A Oxygen

B Oxides of nitrogen

C Carbon dioxide

D Any of these

Review Detailed Answer

Correct Answer: Carbon dioxide

The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?

A e-ηS

B (T1S + 1)/(T2S + 1)

C (T1S/(T2S + 1)

D (T1S + 1)/(T2S

Review Detailed Answer

Correct Answer: e-ηS

E.m.f. generated by thermocouples is of the order of ________________?

A Milli volts

B Micro volts

C Volts

D Kilo volts

Review Detailed Answer

Correct Answer: Milli volts

Liquid argon level in a pressurised storage tank (at 3 kg/cm2) is measured by a/an ____________________?

A Gage glass

B External float gage

C Differential pressure gage

D None of these

Review Detailed Answer

Correct Answer: Differential pressure gage

Mercury manometer (U-tube type) exemplifies a ______________ order system?

A Zero

B First

C Second

D Third

Review Detailed Answer

Correct Answer: Second

Showing 221 to 230 of 320 results

Contact Info

Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

What is the dynamic error in a critically damped second order instrument for a ramp input (At) ?

Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is ___________________?

An amplitude ratio of 0.1 corresponds to _____________ decibels?

Transfer function of transportation lag is___________________?

Paramagnetism method is not used for the composition determination of ______________ in gases?

The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?

E.m.f. generated by thermocouples is of the order of ________________?

Liquid argon level in a pressurised storage tank (at 3 kg/cm2) is measured by a/an ____________________?

Mercury manometer (U-tube type) exemplifies a ______________ order system?