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
2. Coefficient of adhesion is
- (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
- (B) Gradient
- (C) Distance between stops
- (D) All of the above
7. _______ was the first city in India to adopt electric traction.
- (A) Delhi
- (B) Madras (Chennai)
- (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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