MCQ Practice Test on Electric Traction - Set 02 - ObjectiveBooks

Practice Test: Question Set - 02

1. Which of the following is the advantage of electric braking?
(A) It avoids wear of track
(B) Motor continues to remain loaded during braking
(C) It is instantaneous
(D) More heat is generated during braking

(A) High in case of D.C. traction than in the case of AC. traction
(B) Low in case of D.C. traction than in the case of AC. traction
(C) Equal in both AC. and D.C. traction
(D) Any of the above

3. The normal value of adhesion friction is
(A) 0.12
(B) 0.25
(C) 0.40
(D) 0.75

4. Methods can bring the locomotive to dead stop.
(A) Plugging braking
(B) Rheostat braking
(C) Regenerative braking
(D) None of the above

5. Locomotive having mono-motor bogies
(A) Has better coefficient of adhesion
(B) Are suited both for passenger as well as freight service
(C) Has better riding qualities due to the reduction of lateral forces
(D) Has all above qualities

6. Specific energy consumption is affected by which of the following factors?
(A) Retardation and acceleration values
(C) Distance between stops
(D) All of the above

7. _______ was the first city in India to adopt electric traction.
(A) Delhi
(C) Calcutta (Kolkata)
(D) Bombay (Mumbai)

8. Suri transmission is
(A) Electrical pneumatic
(B) Mechanical electrical
(C) Hydro mechanical
(D) Hydro pneumatic

9. Watt-hours per tonne km is usually the specific energy consumption for suburban services.
(A) 15 - 20
(B) 50 -75
(C) 120 -150
(D) 160 - 200

10. When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when
(A) Wheel base of axles is more
(B) Degree of curvature is more
(C) Both (A) and (B)
(D) None of the above

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