Discussion
Home ‣ Chemical Engineering ‣ Process Control and Instrumentation Comments
- Question
Polarograph is meant for the analysis of
Options- A. gaseous mixture
- B. miscible liquids
- C. solids
- D. isotopes
- Correct Answer
- solids
- 1. Which of the following fluid flow measuring devices can measure the largest flow rate?
Options- A. V-notch
- B. Rotameter
- C. Orificemeter
- D. Weir Discuss
- 2. Zirconia probe is used for the measurement of
Options- A. humidity of air.
- B. % CO2 in flue gas.
- C. % O2 in flue gas.
- D. speed of a submarine. Discuss
- 3. Phase lag of the frequency response of a second order system to a sinusoidal forcing function
Options- A. is 30°
- B. is 90° at the most
- C. approaches 180° asymptotically
- D. is 120° Discuss
- 4. Stalagmometer is used for the measurement of
Options- A. kinematic viscosity
- B. surface tension
- C. refractive index
- D. optical activity Discuss
- 5. The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to
Options- A. d
- B. d2
- C. d3
- D. d4 Discuss
- 6. The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches
Options- A. -1
- B. 0
- C. 1
- D. ? Discuss
- 7. E.m.f. generated by thermocouples is of the order of
Options- A. millivolts
- B. microvolts
- C. volts
- D. kilo volts Discuss
- 8. Which of the following flow-metering instru-ments is an areameter?
Options- A. Venturimeter
- B. Rotameter
- C. Pitot tube
- D. Hot wire anemometer Discuss
- 9. Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the
Options- A. mercury in glass thermometer.
- B. optical pyrometer.
- C. iron-constantan thermocouple.
- D. alcohol filled thermometer. Discuss
- 10. Thermal conductivity cell is the primary element of a/an __________ analyser.
Options- A. oxygen
- B. carbon dioxide
- C. carbon monoxide
- D. sulphur dioxide Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: Weir
Correct Answer: % O2 in flue gas.
Correct Answer: approaches 180° asymptotically
Correct Answer: surface tension
Correct Answer: d4
Correct Answer: ?
Correct Answer: millivolts
Correct Answer: Rotameter
Correct Answer: optical pyrometer.
Correct Answer: carbon dioxide
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