Process Control And Instrumentation MCQ Questions & Answers

Process Control And Instrumentation MCQ Questions & Answers | Chemical Engineering

Learn Process Control And Instrumentation MCQ questions & answers are available for a Chemical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Process Control And Instrumentation MCQ question is the important chapter for a Chemical Engineering and GATE students. Page-1 section-4

Time constant is the

A) Time taken by the controlled variable to reach 63.2% of its full change B) Same as transportation lag C) Same as dead time D) Time required by the measured variable to reach 63.2% of its ultimate change

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Optical activity of a solution can be determined using a

A) Polarimeter B) Polarograph C) Dilatometer D) Refractrometer

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system?

A) 1 B) >1 C) < 1 D) None of these

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Working principle of radiation pyrometer is based on the

A) Wien's law B) Kirchoffs law C) Stafan-Boltzman law D) Seebeck effect

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following is never used as an element of industrial resistance thermometer?

A) Lead B) Nickel C) Copper D) 30% iron + 70% nickel

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire.

A) No change B) Decrease C) Increase D) Exponential decrease

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

On-off controllers are normally used for

A) Low loads B) Temperature changes C) Flow rate changes D) None of these

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A pyranometer is an instrument used for measuring the

A) Beam radiation B) Global radiation C) Bright sunshine period D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

A pyrheliometer is an instrument used for measuring the

A) Bright sunshine period B) Beam radiation C) Diffuse radiation D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Feed forward controller accounts for the __________ changes.

A) Set point B) Load C) Both A & B D) Neither A nor B

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board