Discussion
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- Question
Thermisters which have a very high temperature co-efficient of resistivity belong to the class of solid called
Options- A. dielectrics
- B. insulators
- C. semi conductors
- D. conductors
- Correct Answer
- semi conductors
- 1. Compositional analysis of flue gas coming out of a furnace in respect of O2 and CO2% can be continuously done by a/an
Options- A. orsat apparatus
- B. thermal conductivity cell
- C. zirconia probe
- D. chromatograph Discuss
- 2. When the damping co-efficient (?) is unity, the system is
Options- A. Overdamped.
- B. Critically damped.
- C. Underdamped.
- D. Highly fluctuating. Discuss
- 3. Which is the symbol for "pneumatic control valve"?
Options- A.
- B.
- C.
- D. none of these Discuss
- 4. The term analogous to voltage in a single tank system is the
Options- A. heat content of the system.
- B. liquid volume in the tank.
- C. flow rate.
- D. level of liquid. Discuss
- 5. Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing
Options- A. helium
- B. nitrogen
- C. hydrogen
- D. none of these Discuss
- 6. Which of the following is never used as an element of industrial resistance thermometer?
Options- A. Lead
- B. Nickel
- C. Copper
- D. 30% iron + 70% nickel Discuss
- 7. __________ is an example of distributed parameter system
Options- A. Tubular reactor
- B. CSTR
- C. On-off controller
- D. none of these Discuss
- 8. "An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall". This is the working principle of a
Options- A. pH meter
- B. polarimeter
- C. chromatograph
- D. polarograph Discuss
- 9. Silver point temperature is __________ °C.
Options- A. 760.5
- B. 860.5
- C. 960.5
- D. 1060.5 Discuss
- 10. Platinum resistance thermometer can be used upto antimony point which is __________ °C, and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure.
Options- A. 961.93
- B. 630.74
- C. 1064.43
- D. 1261.93 Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: thermal conductivity cell
Correct Answer: Critically damped.
Correct Answer:
Correct Answer: level of liquid.
Correct Answer: helium
Correct Answer: Lead
Correct Answer: Tubular reactor
Correct Answer: pH meter
Correct Answer: 960.5
Correct Answer: 630.74
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