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- Question
The operation of a rotameter is based on
Options- A. variable flow area.
- B. rotation of a turbine.
- C. pressure drop across a nozzle.
- D. pressure at a stagnation point.
- Correct Answer
- variable flow area.
- 1. The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.
Options- A. 250
- B. 500
- C. 750
- D. 1000 Discuss
- 2. Compositional analysis of __________ is done using mass spectrometer.
Options- A. an isotope
- B. natural gas
- C. a solid
- D. an alloy Discuss
- 3. Nichol's chart deals with
Options- A. A.R. vs. phase lag of first order.
- B. A.R. vs. phase lag of second order.
- C. closed loop values vs. open loop values.
- D. frequency response values of controllers. Discuss
- 4. Volumetric expansion is the working principle of the __________ thermometers.
Options- A. mercury in glass
- B. constant volume gas
- C. vapor pressure
- D. bimetallic Discuss
- 5. In a single tank system, the transfer function of level to inlet flow rate is
Options- A. R/TS
- B. R/(TS + 1)
- C. l(TS + l)
- D. 1/TS Discuss
- 6. Which of the following will give maximum gas conversion?
Options- A. Fixed bed reactor.
- B. Fluidised bed reactor.
- C. Semi-fluidised bed reactor.
- D. Plug-flow catalytic reactor. Discuss
- 7. A first order reaction requires two equal sized CSTR. The conversion is
Options- A. less when they are connected in series.
- B. more when they are connected in series.
- C. more when they are connected in parallel.
- D. same whether they are connected in series or in parallel. Discuss
- 8. The reaction between oxygen and organic material is a/an __________ reaction.
Options- A. exothermic
- B. endothermic
- C. biochemical
- D. photochemical Discuss
- 9. 6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant?
Options- A. 100%
- B. 95%
- C. 75%
- D. 20% Discuss
- 10. Pick out the correct statement
Options- A. Reactions with high activation energies are very temperature sensitive.
- B. Chemical equilibrium is a static state.
- C. A photochemical reaction is catalysed by light.
- D. A chemical reaction occurs when the energy of the reacting molecule is less than the activation energy of the reaction. Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: 500
Correct Answer: an isotope
Correct Answer: closed loop values vs. open loop values.
Correct Answer: mercury in glass
Correct Answer: R/(TS + 1)
Correct Answer: Semi-fluidised bed reactor.
Correct Answer: more when they are connected in series.
Correct Answer: exothermic
Correct Answer: 95%
Correct Answer: Reactions with high activation energies are very temperature sensitive.
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