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MCQs

Total Questions : 1634 | Page 4 of 164 pages
Question 31. Composition of natural gas is determined by the
  1.    Haldane apparatus
  2.    Mass spectrometer
  3.    Chromatograph
  4.    Both B and C
 Discuss Question
Answer: Option D. -> Both B and C
Question 32. Thermocouple is suitable for measuring
  1.    Liquid temperatures only
  2.    Very high temperatures only
  3.    Very low temperatures only
  4.    Both high and low temperatures
 Discuss Question
Answer: Option D. -> Both high and low temperatures
Question 33. Continuous measurement of moisture content of paper in paper industry is done by measuring the
  1.    Thermal conductivity through the paper
  2.    Electrical resistance through the paper
  3.    Magnetic susceptibility
  4.    None of these
 Discuss Question
Answer: Option B. -> Electrical resistance through the paper
Question 34. Degree to which an instrument indicates the changes in measured variable without dynamic error is called its
  1.    Speed of response
  2.    Reproducibility
  3.    Fidielity
  4.    Static characteristics
 Discuss Question
Answer: Option C. -> Fidielity
Question 35. Measurement of sub-zero Celcius temperature in industry is done most commonly by
  1.    Thermocouples
  2.    Resistance thermometers
  3.    Gas thermometers
  4.    Bi-metallic thermometers
 Discuss Question
Answer: Option B. -> Resistance thermometers
Question 36. Concentration of sugar solution can be determined by the
  1.    Polarimetry
  2.    Flame photometry
  3.    Emission spectroscopy
  4.    Oscillometry
 Discuss Question
Answer: Option A. -> Polarimetry
Question 37. To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with
  1.    Air
  2.    A metal powder or graphite
  3.    Oil
  4.    Mercury
 Discuss Question
Answer: Option A. -> Air
Question 38. The response of two tanks of same size and resistance in series is
  1.    Under damped
  2.    Critically damped
  3.    Over damped
  4.    None of the above
 Discuss Question
Answer: Option B. -> Critically damped
Question 39. The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is
  1.    1
  2.    3
  3.    4
  4.    2
 Discuss Question
Answer: Option B. -> 3
Question 40. Phase lag of the frequency response of a second order system to a sinusoidal forcing function
  1.    Is 30°
  2.    Is 90° at the most
  3.    Approaches 180° asymptotically
  4.    Is 120°
 Discuss Question
Answer: Option C. -> Approaches 180° asymptotically

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