Q.

Aluminum is not used as winding wire for the armature of dc machine because it 

  • AIs costlier 
  • BIs of low resistivity 
  • CIs of lower thermal conductivity
  • DRequires large winding space 
Correct Answer : (D)

Requires large winding space 

Hints :

Aluminum is not used as winding wire for the armature of dc machine because it Requires large winding space.

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