Important Electric Traction Multiple Choice Questions and Answers


36.  Quadrilateral speed time curve pertains to which of the following services ?


   A. Main line service

   B. Urban service

   C. Sub Urban service

   D. Urban and suburban service


✔ View Answer


D. Urban and suburban service

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37.  Due to which of the following coefficient of adhesion improves?


   A. Rust on the rails

   B. Dust on the rails

   C. Sand on the rails

   D. All of the above


✔ View Answer


D. All of the above

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38.  Coefficient of radiation reduces due to the presence of which of the following ?


   A. Sand on rails

   B. Dew on rails

   C. Oli on the rails

   D. Both B and C


✔ View Answer


D. Both B and C

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39.  The normal value of adhesion friction is


   A. 0.12

   B. 0.25

   C. 0.40

   D. 0.75


✔ View Answer


B. 0.25

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40.  The value of coefficient of adhesion will be high when rails are


   A. Greased

   B. Wet

   C. Sprayed with oil

   D. Cleaned with sand


✔ View Answer


D. Cleaned with sand

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