Electric Traction
When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when

Both of the listed here
Wheel base of axles is more
None of the listed here
Degree of curvature is more

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Electric Traction
Coefficient of adhesion is

All of the listed here
Low in case of D.C. traction than in the case of AC. traction
Equal in both AC. and D.C. traction
High in case of D.C. traction than in the case of AC. traction

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