Railway Engineering

181. Study the following statements regarding creep.
(i) Creep is greater on curves than on tangent railway track,
(ii) Creep in new rails is more than that in old rails,
(iii) Creep is more on steep gradients than on level track. The correct answer is

  1. Only (i)
  2. (i) and (ii)
  3. (ii) and (iii)
  4. (i), (ii) and (iii)

Correct answer: (B)
(i) and (ii)

182. Switch angle depends on
(i) Heel divergence
(ii) Length of tongue rail
(iii) Flange-way clearance
(iv) Throw of switch
The correct answer is

  1. (i) and (ii)
  2. (ii) and (iii)
  3. (iii) and (iv)
  4. (i) and (iv)

Correct answer: (A)
(i) and (ii)

183. Switch angle is the angle between

  1. The gauge face of the stock rail and tongue rail
  2. The outer face of the stock rail and tongue rail
  3. The gauge face of the stock rail and outer face of the tongue rail
  4. The outer face of the stock rail and the gauge face of the tongue rail

Correct answer: (A)
The gauge face of the stock rail and tongue rail

184. Tensile strength of steel used in rails should not be less than

  1. 450 MPa
  2. 500 MPa
  3. 700 MPa
  4. 850 MPa

Correct answer: (C)
700 MPa

185. The angle between the gauge faces of the stock rail and tongue rail, is called

  1. Switch angle
  2. Angle of crossing
  3. Angle of turnout
  4. None of these

Correct answer: (A)
Switch angle

186. The arrangement of rails which permit trains to cross another track and also to divert to the other track, is called

  1. Diamond crossing
  2. Diamond crossing with single slip
  3. Diamond crossing with double slip
  4. Cross over

Correct answer: (C)
Diamond crossing with double slip

187. The check rails are placed opposite the crossing so that

  1. It is symmetrically placed opposite nose of crossing
  2. Its one-third length is ahead of the nose of crossing
  3. Its two-third length is ahead of the nose of crossing
  4. Its three fourth length is ahead of the nose of crossing

Correct answer: (C)
Its two-third length is ahead of the nose of crossing

188. The compensation for curvature on gradient for Meter Gauge is given by

  1. 70/R
  2. 52.5/R
  3. 35/R
  4. 105/R Where 'R' is radius of curve

Correct answer: (B)
52.5/R

189. The correct relation between curve lead (CL), switch lead (SL) and lead of crossing (L) is given by

  1. CL = L - SL
  2. L =CL - SL
  3. SL = L + CL
  4. L = (CL + SL)/2

Correct answer: (B)
L =CL - SL

190. The cross-sectional area of 52 kg flat footed rail is

  1. 6155 mm2
  2. 6615 mm2
  3. 7235 mm2
  4. 7825 mm2

Correct answer: (B)
6615 mm2

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