Deck 3: Railway Track Design and Maintenance

Question 1

In a shunting signal if the red band is inclined at 45° it indicates

A)Stop
B)Proceed
C)Proceed cautiously
D)None of the above

Answer 1

Proceed

Question 2

If D is distance between centres of two parallel track of gauge G, then, total length of cross-over (from the point of commencement to the point of termination) with an intermediate straight portion and N crossing, is given by

A)DN + G [N + $\sqrt{1+N^2}$ )]
B)DN + G [2N + $\sqrt{1+N^2}$ )]
C)DN + G [3N + $\sqrt{1+N^2}$ ]
D)DN + G [4N + $\sqrt{1+N^2}$ ]

Answer 2

DN + G [3N + $\sqrt{1+N^2}$ ]

Question 3

Rail tops of a track are placed

A)Horizontal
B)At an inward slope of 1 in 20
C)At an outward slope of 1 in 20
D)At an outward slope of 1 in 30

Answer 3

At an inward slope of 1 in 20

Question 4

A train is hauled by 2-8-2 locomotive with 22.5 tonnes and on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive?

A)15.0 tonnes
B)22.5 tonnes
C)45.0 tonnes
D)90.0 tonnes

Question 5

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

A)Articulated
B)Undercut
C)Over riding
D)Straight cut

Question 6

For an effective administration, Indian railway system has been divided into

A)Four railway zones
B)Six railway zones
C)Seven railway zones
D)Nine railway zones

Question 7

If 'A' is the angle formed by two gauge faces, the crossing number will be

A)tan A
B)cot A
C)sec A
D)A rad

Question 8

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

A)100 mm
B)119 mm
C)125 mm
D)135 mm

Question 9

Pick up the incorrect statement from the following:

A)Ends of adjoining rails should be in true alignment
B)Rail joints should be as strong as the rail section itself
C)Rail joints should be elastic laterally as well as vertically
D)All the above

Question 10

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

A)450 MPa
B)500 MPa
C)700 MPa
D)850 MPa

Question 11

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

A)33 ft (10.06 m)
B)36 ft (10.97 m)
C)39 ft (11.89 m)
D)42 ft (12.8 m)

Question 12

Wing rails are provided

A)Near tongue rails
B)Near check rails
C)Near stock rails
D)In crossing

Question 13

The side slope of embankments for a railway track is generally taken as

A)1 : 1
B)1.5 : 1
C)2 : 1
D)1 : 2

Question 14

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

A)(H + 10S)/20
B)(S + 10H)/20
C)(20S + H)/10
D)(S + 20H)/10

Question 15

If D is the distance between parallel tracks G between theoretical noses of two crossings measured parallel to tracks, is

A)(D - G - G ?) cot ?
B)(D - G + G ?) cot ?
C)(D - G - G ?) tan ?
D)(D + G + G ?) cot ?

Question 16

To achieve best performance, the type of switch preferred to, is

A)Undercut switch
B)Straight-cut switch
C)Overriding switch
D)Both (a) and (b)

Question 17

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

A)510 m
B)520 m
C)530 m
D)540 m

Question 18

The limiting value of cant deficiency for Meter Gauge routes is

A)40 mm
B)50 mm
C)75 mm
D)100 mm

Question 19

The weight of the rails depends upon

A)Gauge of the tracks
B)Speed of trains
C)Spacing of sleepers
D)All the above

Question 20

The main advantage of a long rail over short one, is

A)It requires less number of rail fastenings
B)It provides smooth running of trains
C)It involves less maintenance cost
D)All the above

Question 21

In a scissors crossover, the crossings provided are
(i. 2 obtuse angle crossings
(ii. 4 obtuse angle crossings
(iii) 4 acute angle crossings
(iv. 6 acute angle crossings
The correct answer is

A)(i) and (iii)
B)(i) and (iv)
C)(ii) and (iii)
D)(ii) and (iv)

Question 22

Rail section first designed on Indian railways, was

A)Double headed
B)Bull headed
C)Flat footed
D)(a) and (b) simultaneously

Question 23

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

A)1 in 8½ B.G. and, in 12 M.G.
B)1 in 12 B.G. and, 1 in 16 M.G.
C)1 in 12 B.G. and 1 in 8½ M.G.
D)1 in 16 B.G. and 1 in 12 M.G.

Question 24

For the purpose of track maintenance, the number of turn out equivalent to one track km is

A)1
B)2
C)5
D)10

Question 25

Dimensions of a plate girder are:

A)851 mm × 851 mm
B)255 mm × 254 mm
C)851 mm × 254 mm
D)551 mm × 254 mm

Question 26

The check rails are placed opposite the crossing so that

A)It is symmetrically placed opposite nose of crossing
B)Its one-third length is ahead of the nose of crossing
C)Its two-third length is ahead of the nose of crossing
D)Its three fourth length is ahead of the nose of crossing

Question 27

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

A)1, 3, 2, 4
B)1, 3, 4, 2
C)3, 1, 4, 2
D)3, 1, 2, 4

Question 28

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

A)3°
B)5°
C)6°
D)8°

Question 29

Largest percentage of material in the rail is in its

A)Head
B)Web
C)Foot
D)Head and foot both

Question 30

The spread between the point and splice rails at a distance of 4.25 m is 50 cm. The size of the crossing is

A)1 in 6
B)1 in 8½
C)1 in 12
D)1 in 16

Question 31

Packing of ballast is done

A)Near the ends of sleepers
B)On the shoulders
C)Under sleepers
D)Between two rails

Question 32

The total gap on both sides between the inside edges of wheel flanges and gauge faces of the rail is kept as

A)10 mm
B)13 mm
C)16 mm
D)19 mm

Question 33

The rail section which is not used on Indian Broad Gauge tracks, is

A)35 R
B)40 R
C)45 R
D)55 R

Question 34

In a diamond crossing, numbers of noses are

A)2
B)3
C)4
D)6

Question 35

Number of cotters used in CST-9 sleepers is

A)2
B)3
C)4
D)5

Question 36

In Indian railways, plate laying is usually done by

A)Side method
B)Telescopic method
C)American method
D)All the above

Question 37

Pick up the correct statement from the following:

A)The line which connects a number of parallel tracks, and also provides an access to main track, is called a gathering line
B)With a diagonal gathering line, the length of the siding decreases with increase of its distance from main track
C)To have sidings of same length, a diagonal line is laid at one end and a parallel gathering line at the other end
D)All the above

Question 38

A Broad Gauge branch line takes off as a contrary flexure from a main line. If the superelevation required for branch line is 10 mm and cant deficiency is 75 mm, the super-elevation to be actually provided on the branch line will be

A)10 mm
B)64 mm
C)85 mm
D)65 mm

Question 39

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

A)Switch angle
B)Angle of crossing
C)Angle of turnout
D)None of these

Question 40

In permanent way, ballast

A)Transfers load from sleepers to the formation
B)Provides an elastic bed to the track
C)Provides a drainage of track
D)All the above

Question 41

Which of the following devices is used to transfer the wagons or locomotives to and from parallel tracks without any necessity of shunting?

A)Triangle
B)Turntable
C)Traverser
D)Scotch block

Question 42

If absolute levels of rails at the consecutive axles A, B, and C separated by 1.8 metres are 100.505 m, 100.530 m, and 100.525 m respectively, the unevenness of rails, is

A)0.065 m
B)0.055 m
C)0.045 m
D)0.035 m

Question 43

Spacing of sleepers

A)Throughout the length of a rail is kept uniform
B)Near rail joints, is kept closer
C)At the middle of rails, is kept closer
D)None of these

Question 44

For a 8° curve track diverging from a main curve of 5° in an opposite direction in the layout of a broad gauge yard, the cant to be provided for the branch track for maximum speed of 45 km/h on the main line and 'G' = 1.676 m is (Permitted cant deficiency for the main line = 7.6 cm)

A)0.168 cm
B)-0.168 cm
C)7.432 cm
D)7.768 cm

Question 45

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

A)40 mm
B)42 mm
C)44 mm
D)46 mm

Question 46

30 m long rails are used in

A)India
B)U.K.
C)Russia
D)U.S.A.

Question 47

The load on each axle of a locomotive is 22 tonnes. If the coefficient of friction is 0.2, then the hauling capacity due to 3 pairs of driving wheels will be

A)26.41
B)19.81
C)13.21
D)6.61

Question 48

Overall depth of a dog spike, is

A)120.6 mm
B)155.90 mm
C)135 mm
D)150 mm

Question 49

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

A)One key
B)Two keys
C)Three keys
D)Four keys

Question 50

52 kg rails are mostly used in

A)Broad Gauge
B)Metre Gauge
C)Narrow Gauge
D)Both (A) and (B)