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MCQs

Total Questions : 120 | Page 4 of 12 pages
Question 31. Force exerted by magnetic field in Hall Effect transducers is ____________
  1.    Lorentz force
  2.    Hall Effect force
  3.    Magnetic force
  4.    Electric force
 Discuss Question
Answer: Option A. -> Lorentz force
Answer: (a).Lorentz force
Question 32. Which of the following represents correct expression for Lorentz force?
  1.    BeV
  2.    BV
  3.    eV
  4.    B
 Discuss Question
Answer: Option A. -> BeV
Answer: (a).BeV
Question 33. Hall Effect transducer can be used to measure ___________
  1.    Magnetic field
  2.    Angular displacement
  3.    Linear displacement
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 34. Hall Effect transducers attain equilibrium instantaneously.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 35. Which of the following represents the output of Hall Effect transducer?
  1.    Hall potential
  2.    Emf
  3.    Applied voltage
  4.    Lorentz Voltage
 Discuss Question
Answer: Option A. -> Hall potential
Answer: (a).Hall potential
Question 36. Which of the following can be measured using tachometers?
  1.    Angular speed
  2.    Linear speed
  3.    Acceleration
  4.    Vibration
 Discuss Question
Answer: Option A. -> Angular speed
Answer: (a).Angular speed
Question 37. Electrodynamic vibration transducers are based on _____________
  1.    Magnetostriction
  2.    Electromagnetic induction
  3.    Self inductance
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Electromagnetic induction
Answer: (b).Electromagnetic induction
Question 38. Which of the following is applicable for the electromagnetic flow meter?
  1.    It causes obstruction to flow
  2.    It doesn’t cause obstruction t flow
  3.    It cannot be used in slurries
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> It doesn’t cause obstruction t flow
Answer: (b).It doesn’t cause obstruction t flow
Question 39. Which of the following is used for measuring emf between plates of transducers?
  1.    Low impedance voltmeter
  2.    High impedance voltmeter
  3.    Any voltmeter
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> High impedance voltmeter
Answer: (b).High impedance voltmeter
Question 40. Two phase induction motor can be used as AC tachometers.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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