Question bank for Limited Departmental Competitive Examination (LDC) examination (Soil mechanics)

Categories: Interview questions and answers Indian Railway Recruitment Study

Question bank for Limited Departmental Competitive Examination (LDC) examination (Soil mechanics) 

 

1. Centre to Centre spacing of formation for double railway line for Broad Gauge is

  1. 1676 mm
  2. 4725 mm
  3. 4265mm
  4. 5300 mm

Answer: 5300 mm

 

2. Earthwork in embankment for railway with manual compaction should be done in layers not exceeding--------------

  1. 15 centimeters
  2. 20 centimeters
  3. 25 centimeters
  4. 30 centimeters

Answer: 30 centimeters

 

3. To provide inverted filter to improve the hearing capacity of soil the plasticity index of blanketing material should not be greater than

  1. 15
  2. 20
  3. 27
  4. 35

Answer: 15

 

4. The bottom of side drains should be below the formation level by at least------------

  1. 45 cm
  2. b )30 cm
  3. 15 cm
  4. 60 cm

Answer: 30 cm

 

5. Cross slope of the formation to have good drainage of Ballast section is

  1. 1 in 40
  2. 1 in 50
  3. 1 in 30
  4. 1 in 20

Answer: 1 in 40

 

6. To provide inverted filter to improve the bearing capacity of soil the liquid limit of blanketing material should not be greater than

  1. 5
  2. 20
  3. 27
  4. 35

Answer: 35

 

7. The side slope of formation in embankment is

  1. 2: 1
  2. 1: 1
  3. 1:5
  4. 1:3

Answer: 2: 1

 

8. The side slope of formation in embankment /cutting depends on

  1. Shearing strength of soil and its angle of repose
  2. Angle of repose
  3. Bearing capacity of the soil
  4. Optimum moisture content of the soil

Answer: Shearing strength of soil and its angle of repose

 

9. The recommended width of Double line cutting formation for B G is

  1. 10210 mm
  2. 10 975 mm
  3. 11555 mm
  4. 10 820 mm

Answer: 11555 mm

 

10. The recommended width of Single line formation cutting for BG excluding drain is

  1. 6250 mm
  2. 6850mm
  3. 54 90mm
  4. 6100mm

Answer: 6250 mm

 

11. In case of compaction of soil by sheep foot roller maximum thickness of layer should not exceed buy more than -------------- centimeter of length of their teeth

  1. 5 centimeter
  2. 4 centimeter
  3. 3 centimeter
  4. 2 centimeter

Answer: 5 centimeter

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