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MCQs

Total Questions : 1634 | Page 20 of 164 pages
Question 191. A control system has the following transfer function F(s) = (s - 1)(s + 1)/s(s - 2)(s + 4)The initial value of the corresponding time function is
  1.    1
  2.    1/8
  3.    7/8
  4.    -1
 Discuss Question
Answer: Option A. -> 1
Question 192. In second order underdamped system,
  1.    Decay ratio = overshoot
  2.    Decay ratio = (overshoot)²
  3.    Overshoot increases for increasing damping co-efficient
  4.    Large damping co-efficient means smaller damping
 Discuss Question
Answer: Option B. -> Decay ratio = (overshoot)²
Question 193. Which of the following shows maximum dip effect (indicating reverse direction of temperature change)?
  1.    Mercury thermometer
  2.    Radiation pyrometer
  3.    Bimetallic thermometer
  4.    Thermocouple
 Discuss Question
Answer: Option A. -> Mercury thermometer
Question 194. Transfer function of transportation lag is
  1.    ETS
  2.    E-TS
  3.    1/(TS + 1)
  4.    None of these
 Discuss Question
Answer: Option B. -> E-TS
Question 195. Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the
  1.    Mercury in glass thermometer
  2.    Optical pyrometer
  3.    Iron-constantan thermocouple
  4.    Alcohol filled thermometer
 Discuss Question
Answer: Option B. -> Optical pyrometer
Question 196. Mcleoid gauge is used to measure the
  1.    Point velocity
  2.    Flow rate
  3.    Vacuum
  4.    Pressure
 Discuss Question
Answer: Option C. -> Vacuum
Question 197. Maximum differential pressure in liquid manometer is __________ psi.
  1.    20
  2.    30
  3.    40
  4.    50
 Discuss Question
Answer: Option B. -> 30
Question 198. In an exothermic chemical reactor, the manipulated variable is the flow rate of
  1.    Coolant
  2.    Reactants
  3.    Product
  4.    None of these
 Discuss Question
Answer: Option A. -> Coolant
Question 199. Which of the following measurements can be made by the measurement of emf?
  1.    PH value
  2.    Degree of hydrolysis
  3.    Composition of complex ions
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 200. Conversion formula for converting amplitude ratio (AR) into decibels is
  1.    Decibel = 20 log10 (AR)
  2.    Decibel = 20 loge (AR)
  3.    Decibel = 20 log10 (AR)0.5
  4.    Decibel = 20 loge (AR)0.5
 Discuss Question
Answer: Option A. -> Decibel = 20 log10 (AR)

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