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MCQs

Total Questions : 112 | Page 8 of 12 pages
Question 71. What is MMF?
  1.    Magnetic Machine Force
  2.    Magnetomotive Force
  3.    Magnetic Motion Force
  4.    Magnetomotion Force
 Discuss Question
Answer: Option B. -> Magnetomotive Force
Answer: (b).Magnetomotive Force
Question 72. The B/H characteristics can be determined using _______
  1.    Ammeter
  2.    Fluxmeter
  3.    Voltmeter
  4.    Multimeter
 Discuss Question
Answer: Option B. -> Fluxmeter
Answer: (b).Fluxmeter
Question 73. The equivalent of the current I in magnetic ohm’s law is?
  1.    Flux
  2.    Reluctance
  3.    MMF
  4.    Resistance
 Discuss Question
Answer: Option A. -> Flux
Answer: (a).Flux
Question 74. The B/H curve can be used to determine?
  1.    Iron loss
  2.    Hysteresis loss
  3.    Voltage loss
  4.    Eddy current loss
 Discuss Question
Answer: Option B. -> Hysteresis loss
Answer: (b).Hysteresis loss
Question 75. The B/H ratio is not constant for ________
  1.    Diamagnetic materials
  2.    Ferromagnetic materials
  3.    Paramagnetic materials
  4.    Non-magnetic materials
 Discuss Question
Answer: Option B. -> Ferromagnetic materials
Answer: (b).Ferromagnetic materials
Question 76. A substance whose permeability is less than the permeability of free space is?
  1.    Diamagnetic
  2.    Paramagnetic
  3.    Ferromagnetic
  4.    Not a magnetic substance
 Discuss Question
Answer: Option A. -> Diamagnetic
Answer: (a).Diamagnetic
Question 77. Which, among the following, have negative susceptibility?
  1.    Diamagnetic
  2.    Paramagnetic
  3.    Ferromagnetic
  4.    Not a magnetic substance
 Discuss Question
Answer: Option A. -> Diamagnetic
Answer: (a).Diamagnetic
Question 78. The unit for permeability of free space is?
  1.    Henry
  2.    Henry-m
  3.    Henry/m
  4.    Henry/m²
 Discuss Question
Answer: Option C. -> Henry/m
Answer: (c).Henry/m
Question 79. Which, among the following, have positive susceptibility?
  1.    Diamagnetic
  2.    Paramagnetic
  3.    Ferromagnetic
  4.    Both paramagnetic and ferromagnetic
 Discuss Question
Answer: Option D. -> Both paramagnetic and ferromagnetic
Answer: (d).Both paramagnetic and ferromagnetic
Question 80. A substance whose permeability is more than the permeability of free space is?
  1.    Diamagnetic
  2.    Paramagnetic
  3.    Ferromagnetic
  4.    Both paramagnetic and ferromagnetic
 Discuss Question
Answer: Option D. -> Both paramagnetic and ferromagnetic
Answer: (d).Both paramagnetic and ferromagnetic

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