Armature Cores and Windings Quiz

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Questions and Answers

What is the purpose of using thin laminated circular steel disks in the armature core?

  • To enhance mechanical strength
  • To reduce eddy current losses (correct)
  • To increase the weight of the armature
  • To improve electrical conductivity

What is the function of air ducts in the armature core?

  • To facilitate axial air flow for cooling (correct)
  • To insulate the armature winding
  • To reduce the weight of the armature
  • To increase magnetic flux

What is the purpose of insulating the armature conductors from each other and from the armature core?

  • To increase electrical resistance
  • To decrease the weight of the armature
  • To prevent short circuits (correct)
  • To enhance magnetic flux

Why are double layer lap or wave windings generally used in armature winding?

<p>To achieve better commutation (B)</p> Signup and view all the answers

What is the function of the armature core in a DC machine?

<p>To act as the rotor (B)</p> Signup and view all the answers

Why are armature conductors insulated from each other and from the armature core?

<p>To prevent short circuits (D)</p> Signup and view all the answers

What is the purpose of using thin laminated circular steel disks in the armature core?

<p>To reduce eddy current losses (B)</p> Signup and view all the answers

What type of winding is commonly used in armature winding?

<p>Double layer lap or wave winding (C)</p> Signup and view all the answers

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