Railway Engineering

41. Coal ash (or cinder) is used in initial stages of a new construction of railway for

  1. Wooden sleepers
  2. Steel sleepers
  3. Cast iron sleepers
  4. None of these

Correct answer: (A)
Wooden sleepers

42. Composite sleeper index determines

  1. Number of sleepers per rail length
  2. Suitability of wooden sleepers
  3. Permissible stresses in steel sleepers
  4. None of these

Correct answer: (B)
Suitability of wooden sleepers

43. Composite sleeper index is the index of

  1. Hardness and strength
  2. Strength and toughness
  3. Toughness and wear resistance
  4. Wear resistance and hardness

Correct answer: (A)
Hardness and strength

44. Coning of wheels

  1. Prevent lateral movement of wheels
  2. Provide smooth running of trains
  3. Avoid excessive wear of inner faces of rail
  4. All the above

Correct answer: (D)
All the above

45. Coning of wheels is provided

  1. To check lateral movement of wheels
  2. To avoid damage to inner faces of rails
  3. To avoid discomfort to passengers
  4. All the above

Correct answer: (D)
All the above

46. Consider the following statements about concrete sleepers.
1. They improve the track modulus.
2. They have good scrap value.
3. They render transportation easy.
4. They maintain the gauge quite satisfactorily. Of these statements

  1. 1 and 2 are correct
  2. 2 and 3 are correct
  3. 3 and 4 are correct
  4. 1 and 4 are correct

Correct answer: (D)
1 and 4 are correct

47. Consider the following statements:
Automatic signalling system results in
1. Greater risk
2. Higher efficiency
3. Avoidance of block instruments
4. Higher operating cost
Of these statements

  1. 1 and 2 are correct
  2. 3 and 4 are correct
  3. 1 and 4 are correct
  4. 2 and 3 are correct

Correct answer: (D)
2 and 3 are correct

48. Consider the following surveys.
1. Reconnaissance survey
2. Preliminary survey
3. Traffic survey
4. Location survey
The correct sequence in which these surveys are conducted before the alignment of a track is finalised is

  1. 1, 3, 2, 4
  2. 1, 3, 4, 2
  3. 3, 1, 4, 2
  4. 3, 1, 2, 4

Correct answer: (D)
3, 1, 2, 4

49. Continuity of electric current across welded rail joints, is maintained by

  1. Welding ends of a wire to each rail
  2. Placing an insulated plate underneath the rails
  3. Placing insulation in expansion gaps
  4. None of these

Correct answer: (D)
None of these

50. Creep is the

  1. Longitudinal movement of rail
  2. Lateral movement of rail
  3. Vertical movement of rail
  4. Difference in level of two rails

Correct answer: (A)
Longitudinal movement of rail

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