Electric Traction
In India, electrification of railway track was done for the first time in which of the following years?

1940-1942
1920-1925
1935 - 1938
1925 - 1932

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Electric Traction
Locomotive having mono-motor bogies

All of the listed here
Has better coefficient of adhesion
Has better riding qualities due to the reduction of lateral forces
Are suited both for passenger as well as freight service

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