Discussion
Home ‣ Chemical Engineering ‣ Process Control and Instrumentation Comments
- Question
Photoelectric pyrometers are suitable in the temperature range of __________ °C.
Options- A. 400-1600
- B. 800-1600
- C. 800-2500
- D. 400-1000
- Correct Answer
- 800-1600
- 1. Which of the following thermocouples is capable of measuring a temperature of -50°C?
Options- A. Platinum - platinum + rhodium
- B. Chromel - alumel
- C. Iron-constantan
- D. Copper - constantan Discuss
- 2. A non-linear system will have __________ steady state values.
Options- A. one
- B. more than one
- C. two
- D. three Discuss
- 3. Mcleoid gauge is used to measure the
Options- A. point velocity
- B. flow rate
- C. vacuum
- D. pressure Discuss
- 4. Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are
Options- A. air to open valve with the controller direct acting.
- B. air to close valve with the controller indirect acting.
- C. air to open valve with the controller indirect acting.
- D. air to close valve with the controller direct acting. Discuss
- 5. Bimetal strips are not used in
Options- A. bimetallic thermometers.
- B. thermocouples.
- C. thermostats.
- D. relays for opening & closing of electrical circuits. Discuss
- 6. The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since
Options- A. the function is exponential.
- B. the Laplace transform of integral of exp(at) has finite values only for s > a.
- C. the Laplace transform integral of exp(at) has initial values only for s > a.
- D. the function exp(at) is piece-wise continuous only for s > a. Discuss
- 7. The pressure sensing element of elastic type pressure gauge is never made in the form of a
Options- A. bellow
- B. diaphragm
- C. strip
- D. Bourdon tube Discuss
- 8. A stable system is the one
Options- A. for which the output response is bounded for all bounded input.
- B. which exhibits an unbounded response to a bounded input
- C. which satisfies the conditions for a servo problem.
- D. none of these. Discuss
- 9. In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is
Options- A.
- B.
- C.
- D.
Discuss
- 10. Bourdon tube is never made of
Options- A. phosphor bronze
- B. monel metal
- C. stainless steel
- D. cast iron Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: Platinum - platinum + rhodium
Correct Answer: more than one
Correct Answer: vacuum
Correct Answer: air to open valve with the controller indirect acting.
Correct Answer: thermocouples.
Correct Answer: the Laplace transform of integral of exp(at) has finite values only for s > a.
Correct Answer: strip
Correct Answer: for which the output response is bounded for all bounded input.
Correct Answer:
Correct Answer: cast iron
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.