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MCQs

Total Questions : 1634 | Page 129 of 164 pages
Question 1281. Thermal conductivity cell is the primary element of a/an __________ analyser.
  1.    Carbon monoxide
  2.    Oxygen
  3.    Sulphur dioxide
  4.    Carbon dioxide
 Discuss Question
Answer: Option D. -> Carbon dioxide
Question 1282. Which of the following is not a variable area flow meter?
  1.    Piston type meter
  2.    Rotameter
  3.    Magnetic flow meter
  4.    Orifice and tapered plug meter
 Discuss Question
Answer: Option C. -> Magnetic flow meter
Question 1283. 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.
  1.    630.74
  2.    1064.43
  3.    1261.93
  4.    961.93
 Discuss Question
Answer: Option A. -> 630.74
Question 1284. Which of the following thermocouples is capable of measuring a temperature of -50°C?
  1.    Chromel - alumel
  2.    Copper - constantan
  3.    Platinum - platinum + rhodium
  4.    Iron-constantan
 Discuss Question
Answer: Option C. -> Platinum - platinum + rhodium
Question 1285. The transfer function of a process is 1/(16s² + 8s + 4). If a step change is introduced into the system, then the response will be
  1.    Under damped
  2.    Over damped
  3.    None of these
  4.    Critically damped
 Discuss Question
Answer: Option A. -> Under damped
Question 1286. Reset rate is the another term used for __________ time.
  1.    Dead
  2.    None of these
  3.    Derivative
  4.    Integral
 Discuss Question
Answer: Option D. -> Integral
Question 1287. Which of the following thermocouples has the least temperature measurement range?
  1.    Chromel-alumel
  2.    Iron-constantan
  3.    Platinum-platinum/rhodium
  4.    Copper-constantan
 Discuss Question
Answer: Option D. -> Copper-constantan
Question 1288. The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly
  1.    Hyperbolic
  2.    Linear
  3.    Parabolic
  4.    Non-linear
 Discuss Question
Answer: Option B. -> Linear
Question 1289. Which thermocouple can be used to measure a temperature of around 1400°C ?
  1.    Platinum-platinum+rhodium
  2.    Aluminium-chromel
  3.    Copper-constantan
  4.    None of these
 Discuss Question
Answer: Option A. -> Platinum-platinum+rhodium
Question 1290. Thermal wells are used in the temperature measurement to
  1.    Reduce measuring lag
  2.    Increase the sensitivity
  3.    Guard against corrosive and oxidising action on thermocouple materials
  4.    Increase the fidelity
 Discuss Question
Answer: Option C. -> Guard against corrosive and oxidising action on thermocouple materials

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