railway

Question 1

A CST-9 sleeper consists of

Answer 1

two inverted triangular pots on either side of rail seat
a central plate with a projected key and box on the top of plate
a tie bar and 4 cotters to connect two cast iron plates
a single two way key provided on the gauge side to hold the rail to sleeper

Question 2

Charles Vignoles invented the flat footed rails in

Answer 2

1836

Question 3

Minimum depth of ballast prescribed of B.G. trunk lines of Indian Railways, is

Answer 3

20~25 cm

25 cm on indiabix

Question 4

Best ballast contains stones varying in size from

Answer 4

Minimum ballast size 19mm.

Maximum size 50.8 mm.

Question 5

Distance between the inner rail and check rail provided on sharp curve, is

Answer 5

44 mm for BG and MG routes and 41 mm for NG routes.

Question 6

Pot sleepers are in the form of

Answer 6

two bowls placed under each rail and connected together with a tie bar

Question 7

A kink is made in stock rails, ahead of the toe of switch at a distance of

Answer 7

15 cm

Question 8

Rails are bent to correct curvature if the degree of curve, is more than

Answer 8

3 degree other sources

4 degree indiabix

Question 9

In India the rails are manufactured by

Answer 9

[A]. open hearth process

[B]. duplex process

Question 10

A scissors cross-over consists of angles

Answer 10

four pairs of points, six acute angle crossings and two obtuse angle crossings

Question 11

Wooden sleepers used on the girders of bridges, are generally made of

Answer 11

teak

Question 12

Overall depth of a dog spike, is

Answer 12

120.6 mm

Question 13

Maximum wheel base distance provided on Indian B.G. tracks

Answer 13

6.096 m

Question 14

what are used to fix flat footed rails to the wooden sleepers

Answer 14

bearing plates

Question 15

The quantity of stone ballast required per metre tangent length, is

Answer 15

BG = 1.11 m3
and
MG = .767. m3

Question 16

The type of switch generally used for B.G. and M.G. tracks, is

Answer 16

Undercut switch: used for N.G track.
Overriding: For B.G & M.G track.
Straight cut: For bull-headed Rail.

Question 17

For flat bottom sleepers, maximum size of ballast, is

Answer 17

For wooden sleeper 50mm. (indiabix)
For steel sleeper 40mm.
For RCC 25mm.

Question 18

Width of the top portion of a flat footed, rail, is

Answer 18

66.77 mm

Question 19

Minimum packing space provided between two sleepers, is between

Answer 19

the distance b/w the two sleepers at the joint is 30-35cm or to max 55cm, and rest of that up to 75cm

Question 20

A scissors cross over consists of one diamond and _____ turnouts ?

Answer 20

4 turnouts

Question 21

Heel divergency, the distance between the running faces of stock rail and gauge face of tongue rail, as recommended for Indian B.G. tracks, is

Answer 21

BG=135.

MG=119&.
NG=100.

Question 22

Type of switch rails generally adopted for modern track, is

Answer 22

curved switch

Question 23

By interchanging gibs and cotters of a pot sleeper, gauge may be slackened by

Answer 23

3.2 mm

Question 24

Composite sleeper index determines

Answer 24

suitability of wodden sleepers

Composite sleeper index The composite sleeper index (CSI), which evolved from a combination of the properties of strength and hardness, is an index used to determine the suitability of a particular timber for use as a sleeper from the point of view of mechanical strength.

Question 25

Indian Railways detects the rail flow by

Answer 25

Kraut Kramer Rail flow detector.

Question 26

A wing rail is renewed or reconditioned if its maximum vertical wear is

Answer 26

9.5m

Question 27

Monnier, the inventor of R.C.C., suggested the introduction of reinforced cement concert sleepers for the railways in

Answer 27

1877

Question 28

Type of sleeper -- Minimum CSI

Answer 28

Track sleeper -- 783 Crossing sleeper -- 1352 Bridge sleeper -- 1455

Question 29

If S and H are strength and hardness index of a timber at 12% moisture content, the composite sleeper index, is

Answer 29

(S+ 10.H ) / 20

Question 30

In Indian railways, plate laying is usually done by

Answer 30

telescopic method

Question 31

Maximum cant deficiency prescribed on Indian Board Gauge Railways, is

Answer 31

For upto 100 kmph. Speed CD=7.6 cm & for speed > 100 kmp CD=10 cm.

Question 32

On Indian Railways standard length of rails for M.G. track, is

Answer 32

11.89 m

Question 33

The standard dimensions of a wooden sleeper for M.G. railway track are

Answer 33

Bg - 2.75m*25cm*.13cM. Mg - 1.83m*20cm*11cm. Ng - 1.54m*15cm*.10cm.

Question 34

To avoid the damage of nose of crossing, the wing rails are ramped so that nose of crossing remains at a lower level by

Answer 34

3 mm

Question 35

Smitch diamond is provided if the angle of diamond is less than

Answer 35

6 degree

Question 36

The distance between theoretical nose of crossing and actual nose of crossing for practical purposes, is

Answer 36

Nose thickness x cot α

Question 37

Widening of gauge is provided if degree of the curve, is

Answer 37

more then 4.5°

Question 38

Sand may be used as ballast for

Answer 38

cast iron sleepers

Question 39

cast iron sleeper is

Answer 39

Cast iron sleeper, is ``` [A]. pot sleeper [B]. box sleeper [C]. Duplex sleeper [D]. plate sleeper all correct ```

Question 40

On Indian Railways, angle of crossing between gauge faces of Vee, is generally calculated by

Answer 40

cole's method

Question 41

In a railway track, permissible gauge with tolerance under loaded condition, is

Answer 41

G + 1.5 mm

Question 42

The lengths of the standard crossings in India for Broad gauge and Metre gauge tracks is same for

Answer 42

1 in 8.5 B.G. and, 1 in 12 M.G

Question 43

On either side of the centre line of rails, a cant of 1 in 20 in the sleeper is provided for a distance of

Answer 43

175 mm

Question 44

On Indian Railways, the approximate weight of a rail section is determined from the formula

Answer 44

weight of rail / axial load of locomotive = 1 / 510

Question 45

Steel sleepers are

Answer 45

6 mm thick steel sheets with ends bent down

Question 46

The check rails are placed opposite the crossing wrt nose of crossing

Answer 46

The check rails are placed opposite the crossing so that its two-third length is ahead of the nose of crossing

Question 47

Staggered rail joints are generally provided

Answer 47

on curves

Question 48

Bull headed rails are generally provided on

Answer 48

points and crossing

Question 49

Length of stock rail ahead of the toe should be

Answer 49

Length of stock rail ahead of the toe should be a minimum of 1.65 m

Question 50

For metal sleepers with rounded edges, maximum size of ballast, is

Answer 50

40mm

Question 51

Check rails are provided on inner side of inner rails if sharpness of a B.G. curve, is more than

Answer 51

> 8°

Question 52

Burnettising is done for the preservation of

Answer 52

wooden sleepers

Question 53

For inspection and packing of ballast, each pot sleeper is provided with ____ holes

Answer 53

three holes

Question 54

The effective bearing area of all types of sleepers, is

Answer 54

0.46 m2

Question 55

Pick up the correct statement from the following: A. An extra width of 7.5 cm ballast isprovided on outside a curve if track is laid with short welded rails B. An extra width of 7.5 cm ballast isprovided on outside a curve sharper than 3° on B.G. and M.G. tracks C. An extra width of 15 cm ballast is provided on each shoulder if the track is laid with welded rails D. All the above.

Answer 55

Pick up the correct statement from the following: A. An extra width of 7.5 cm ballast isprovided on outside a curve if track is laid with short welded rails B. An extra width of 7.5 cm ballast isprovided on outside a curve sharper than 3° on B.G. and M.G. tracks C. An extra width of 15 cm ballast is provided on each shoulder if the track is laid with welded rails D. All the above.

Question 56

For points and crossings, maximum size of ballast, is

Answer 56

25 mm else 50 mm

Question 57

If a is average number of peaks more than 10 mm of uneveness per kilometre, b is average number peaks more than 6 mm for gauge variation per kilometre and c is average number of peaks more than 2 mm twist per metre, then composite current recording index (Ic), as recommended by Indian Northern Railways, is

Answer 57

Ic = 40 - a - b - c/4

Question 58

The standard width of ballast for M.G. track in Indian Railways, is kept

Answer 58

2. 30 m 3. 35 m for B.G. 1. 8 m for N.G.

Question 59

To prevent creep in rails, the steel sleepers are fixed with rails by clips, bolts and ____ keys

Answer 59

4

Question 60

In Indian railways, the ratio of axle load and weight of rail, is

Answer 60

512

Question 61

Minimum composite sleeper index for wooden sleepers used over bridge girders, is

Answer 61

1455

Question 62

f the stock rails are B.H. rails, the type of switch generally provided, is

Answer 62

straight cut.

Question 63

On B.G. tracks the distance of outer signal from station limit is kept

Answer 63

BG - 540m. MG - 400m. Fouling mark is 305m.