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MCQs

Total Questions : 323 | Page 6 of 33 pages
Question 51. The speed of a locomotive is controlled by
  1.    Flywheel
  2.    Gear box
  3.    Applying brakes
  4.    Regulating steam flow to engine
 Discuss Question
Answer: Option A. -> Flywheel
Question 52. The friction at the track is proportional to
  1.    1/speed
  2.    1/(speed)²
  3.    Speed
  4.    None of the above
 Discuss Question
Answer: Option C. -> Speed
Question 53. The overall efficiency of steam locomotive is around
  1.    5 to 10 percent
  2.    15 to 20 percent
  3.    25 to 35 percent
  4.    35 to 45 percent
 Discuss Question
Answer: Option A. -> 5 to 10 percent
Question 54. When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when
  1.    Wheel base of axles is more
  2.    Degree of curvature is more
  3.    Both (A) and (B)
  4.    None of the above
 Discuss Question
Answer: Option C. -> Both (A) and (B)
Question 55. For which of the following locomotives the maintenance requirements are the least?
  1.    Steam locomotives
  2.    Diesel locomotives
  3.    Electric locomotives
  4.    Equal in all of the above
 Discuss Question
Answer: Option B. -> Diesel locomotives
Question 56. Which of the following is an advantage of electric traction over other methods of traction?
  1.    Faster acceleration
  2.    No pollution problems
  3.    Better braking action
  4.    All of the above
 Discuss Question
Answer: Option A. -> Faster acceleration
Question 57. Methods can bring the locomotive to dead stop.
  1.    Plugging braking
  2.    Rheostat braking
  3.    Regenerative braking
  4.    None of the above
 Discuss Question
Answer: Option A. -> Plugging braking
Question 58. The air resistance to the movement of the train is proportional to
  1.    speed
  2.    (speed)2
  3.    (speed)3
  4.    1/speed
 Discuss Question
Answer: Option B. -> (speed)2
Question 59. Which of the following braking systems is used on steam locomotives?
  1.    Hydraulic system
  2.    Pneumatic system
  3.    Vacuum system
  4.    None of the above
 Discuss Question
Answer: Option C. -> Vacuum system
Question 60. An ideal traction system should have
  1.    Easy speed control
  2.    High starting tractive effort
  3.    Equipment capable of withstanding large temporary loads
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above

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