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MCQs

Total Questions : 575 | Page 1 of 58 pages
Question 1. The ratio of intensity of magnetisation to the magnetisation force is known as
  1.    flux density
  2.    susceptibility
  3.    relative permeability
  4.    none of the above
 Discuss Question
Answer: Option B. -> susceptibility
Question 2. What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?
  1.    22 x 10"8 N
  2.    22 x 10"7 N
  3.    22 x 10-6 N
  4.    22 x 10"5 N
 Discuss Question
Answer: Option D. -> 22 x 10"5 N
Question 3. The commonly used material for shielding or screening magnetism is
  1.    copper
  2.    aluminium
  3.    soft iron
  4.    brass
 Discuss Question
Answer: Option C. -> soft iron
Question 4. Ferrites are materials.
  1.    paramagnetic
  2.    diamagnetic
  3.    ferromagnetic
  4.    none of the above
 Discuss Question
Answer: Option C. -> ferromagnetic
Question 5. The uniform magnetic field is
  1.    the field of a set of parallel conductors
  2.    the field of a single conductor
  3.    the field in which all lines of magnetic flux are parallel and equidistant
  4.    none of the above
 Discuss Question
Answer: Option C. -> the field in which all lines of magnetic flux are parallel and equidistant
Question 6. Core of an electromagnet should have
  1.    low coercivity
  2.    high susceptibility
  3.    both of the above
  4.    none of the above
 Discuss Question
Answer: Option C. -> both of the above
Question 7. Fleming's left hand rule is used to find
  1.    Direction of magnetic field due to current carrying conductor
  2.    Direction of flux in a solenoid
  3.    Direction of force on a current carrying conductor in a magnetic field
  4.    Polarity of a magnetic pole
 Discuss Question
Answer: Option C. -> Direction of force on a current carrying conductor in a magnetic field
Question 8. Out of the following statements, concerning an electric field, which statement is not true?
  1.    The electric intensity is a vector quantity
  2.    The electric field intensity at a point is numerically equal to the force exerted upon a charge placed at that point
  3.    An electric field is defined as a point in space at which an electric charge would experience a force
  4.    Unit field intensity in the exertion of a force of one newton on a charge of one coulomb
 Discuss Question
Answer: Option B. -> The electric field intensity at a point is numerically equal to the force exerted upon a charge placed at that point
Question 9. The force between two long parallel conductors is inversely proportional to
  1.    Radius of conductors
  2.    Current in one conductor
  3.    Product of current in two conductors
  4.    Distance between the conductors
 Discuss Question
Answer: Option D. -> Distance between the conductors
Question 10. Ferrites are a sub-group of
  1.    non-magnetic materials
  2.    ferro-magnetic materials
  3.    paramagnetic materials
  4.    ferri-magnetic materials
 Discuss Question
Answer: Option D. -> ferri-magnetic materials

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