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MCQs

Total Questions : 120 | Page 6 of 12 pages
Question 51. Servo operated electromagnetic flow meter is _________________
  1.    Zero order system
  2.    First order system
  3.    Second order system
  4.    Third order system
 Discuss Question
Answer: Option C. -> Second order system
Answer: (c).Second order system
Question 52. Which of the following factors electromagnetic flow meters are sensitive to?
  1.    Temperature of fluid
  2.    Viscosity of fluid
  3.    Density of fluid
  4.    None of the mentioned
 Discuss Question
Answer: Option D. -> None of the mentioned
Answer: (d).None of the mentioned
Question 53. Which of the following device is used for measuring emf between electrodes?
  1.    Low impedance type voltmeter
  2.    High impedance voltmeter
  3.    No specification for voltmeter
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> High impedance voltmeter
Answer: (b).High impedance voltmeter
Question 54. Electromagnetic flow meter is based on ________________
  1.    Coulomb’s law
  2.    Law of electromagnetic induction
  3.    Kirchhoff law
  4.    Newton’s law
 Discuss Question
Answer: Option B. -> Law of electromagnetic induction
Answer: (b).Law of electromagnetic induction
Question 55. Which for the following represents condition for maximum emf?
  1.    Electrodes parallel to pipe length
  2.    Electrodes parallel to flow
  3.    Electrodes across flow
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Electrodes across flow
Answer: (c).Electrodes across flow
Question 56. Why feedback in accelerometer systems are applied to?
  1.    To increase the range
  2.    To increase accuracy
  3.    To increase accuracy and bandwidth
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> To increase accuracy and bandwidth
Answer: (c).To increase accuracy and bandwidth
Question 57. Feedback torque developed due to the application of LVDT will be __________________
  1.    Equal to inertial torque
  2.    Greater than inertial torque
  3.    Less than inertial torque
  4.    No relation with inertial torque
 Discuss Question
Answer: Option A. -> Equal to inertial torque
Answer: (a).Equal to inertial torque
Question 58. PMMC system is used for providing ______________
  1.    Feedback torque
  2.    Damping
  3.    Feedback torque and damping
  4.    Sufficient magnetic field
 Discuss Question
Answer: Option C. -> Feedback torque and damping
Answer: (c).Feedback torque and damping
Question 59. Internal torque of the coil, while operation is _____________
  1.    M.r
  2.    M.r²
  3.    M.r².x’’(t)
  4.    M.r.x(t)
 Discuss Question
Answer: Option D. -> M.r.x(t)
Answer: (d).M.r.x(t)
Question 60. Which of the following is measured in open loop accelerometer system?
  1.    Absolute displacement of a proof mass
  2.    Relative displacement between the proof mass and external environment
  3.    Relative displacement between the proof mass and housing
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Relative displacement between the proof mass and housing
Answer: (c).Relative displacement between the proof mass and housing

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