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MCQs

Total Questions : 1634 | Page 12 of 164 pages
Question 111. A system with a double pole at the origin is unstable since the corresponding term in the time domain
  1.    Is a constant
  2.    Grows exponentially with time
  3.    Grows linearly with time
  4.    Decays linearly with time
 Discuss Question
Answer: Option C. -> Grows linearly with time
Question 112. Use of I-control along with P-control facilitates
  1.    Elimination of offset
  2.    Reduction of offset
  3.    Reduction of stability time
  4.    None of these
 Discuss Question
Answer: Option A. -> Elimination of offset
Question 113. Positioning controllers are used for
  1.    Low loads
  2.    Temperature changes
  3.    High loads
  4.    Flow rate changes
 Discuss Question
Answer: Option C. -> High loads
Question 114. Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.
  1.    Kelvin
  2.    Centigrade
  3.    Fahrenheit
  4.    Reaumer
 Discuss Question
Answer: Option C. -> Fahrenheit
Question 115. Mass spectrometer is used for the composition analysis of
  1.    Alloys
  2.    Solids
  3.    Isotopes
  4.    None of these
 Discuss Question
Answer: Option C. -> Isotopes
Question 116. The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by
  1.    Reducing value of Kc
  2.    Introducing integral control
  3.    Introducing derivative control
  4.    None of the above
 Discuss Question
Answer: Option B. -> Introducing integral control
Question 117. In a second order under damped system, the
  1.    Time required for the response of first reach its ultimate value is called the response time
  2.    Overshoot (which is a measure of how much the response exceeds the ultimate value) increase with the decrease of damping co-efficient e
  3.    Decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of overshoot
  4.    None of these
 Discuss Question
Answer: Option B. -> Overshoot (which is a measure of how much the response exceeds the ultimate value) increase with the decrease of damping co-efficient e
Question 118. Which of the following is not a composition measuring instrument?
  1.    Thermal conductivity cell
  2.    Mass spectrometer
  3.    Polarograph
  4.    Hot wire anemometer
 Discuss Question
Answer: Option D. -> Hot wire anemometer
Question 119. Which of the following is not a second order instrument?
  1.    Mercury in glass thermometer with covering
  2.    Bare mercury in glass thermometer
  3.    Pressure gauge with one bellow, two tubes and a tank
  4.    None of these
 Discuss Question
Answer: Option B. -> Bare mercury in glass thermometer
Question 120. Which of the following is not the triple point of water?
  1.    32°R
  2.    273°K
  3.    492°R
  4.    32°F
 Discuss Question
Answer: Option A. -> 32°R

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