Deck 2: Railway Track Components and Measurements

Question 1

Bearing plates are used to fix

A)Flat footed rails to the wooden sleepers
B)Double headed rails to the wooden sleepers
C)Bull headed rails to the wooden sleepers
D)Flat footed rails to the cast iron sleepers

Answer 1

Flat footed rails to the wooden sleepers

Question 2

On a single line track, 10 goods trains loaded with iron ore run from A to B and empty wagons return from B to A daily. Amount of creep of the rails will be

A)Zero
B)More in the direction A to B
C)More in the direction B to A
D)None of these

Answer 2

More in the direction A to B

Question 3

The desirable rate of change of cant deficiency in case of Metre Gauge is

A)20 mm/sec
B)35 mm/sec
C)55 mm/sec
D)65 mm/sec

Answer 3

35 mm/sec

Question 4

At a rail joint, the ends of adjoining rails, are connected with a pair of fish plates and

A)2 fish bolts
B)4 fish bolts
C)6 fish bolts
D)8 fish bolts

Question 5

If the standard length of a B.G. crossing is 597 cm, the number of crossing, is

A)1 in 8½
B)1 in 12
C)1 in 16
D)None of these

Question 6

Switch angle is the angle between

A)The gauge face of the stock rail and tongue rail
B)The outer face of the stock rail and tongue rail
C)The gauge face of the stock rail and outer face of the tongue rail
D)The outer face of the stock rail and the gauge face of the tongue rail

Question 7

Pick up the incorrect statement from the following:

A)Sleepers transfer the load of moving locomotive to the girders of the bridges
B)Sleepers act as a non-elastic medium between the rails and ballast
C)Sleepers hold the rails at 1 in 20 tilt inward
D)Sleepers hold the rails loose on curve

Question 8

On Broad Gauge main lines with maximum traffic loads, the rail section preferred to, is

A)29.8 to 37.3 kg/m
B)32.5 to 42.5 kg/cm
C)44.7 to 56.8 kg/m
D)None of these

Question 9

The treadle bar is provided

A)In the middle of the track a little in front of the toes of the tongue rail
B)Near and parallel to inner side of one of the rails
C)At right angle to the rail
D)Near and parallel to inner side of both the rails

Question 10

Heel of crossing is the line joining

A)Ends of splice rail and point rail
B)Ends of lead rails butting the crossing
C)Ends of wing rails
D)Throat and actual nose of crossing

Question 11

The main advantage of a cement concrete sleeper, is:

A)Its heavy weight which improves the track modulus
B)Its capacity to maintain gauge
C)Its suitability for track circuiting
D)All the above

Question 12

Stock rails are

A)Parts of crossing
B)Fitted against check rails
C)Fitted against tongue rails
D)Laid between heel of switch and nose of crossing

Question 13

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

A)Welding ends of a wire to each rail
B)Placing an insulated plate underneath the rails
C)Placing insulation in expansion gaps
D)None of these

Question 14

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

A)1 and 2 are correct
B)2 and 3 are correct
C)3 and 4 are correct
D)1 and 4 are correct

Question 15

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

A)Diamond crossing
B)Diamond crossing with single slip
C)Diamond crossing with double slip
D)Cross over

Question 16

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

A)150 mm
B)165 mm
C)175 mm
D)185 mm

Question 17

In a B.G. railway track, the specified ruling gradient is 1 in 250. The horizontal curve of 3° on a gradient of 1 in 250 will have the permissible gradient of

A)1 in 257
B)1 in 357
C)1 in 457
D)1 in 512

Question 18

A CST-9 sleeper consists of

A)Two inverted triangular pots on either side of rail seat
B)A central plate with a projected key and box on the top of plate
C)A tie bar and 4 cotters to connect two cast iron plates
D)All the above

Question 19

Staggered rail joints are generally provided

A)On curves
B)On tangents
C)On bridges
D)In tunnels

Question 20

The following tests are conducted for rails:
(i) Falling weight test
(ii) Tensile test
(iii) Hammer test
The compulsory tests are

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

Question 21

Pick up the incorrect statement from the following:

A)Fish plates fit the underside of the rail head
B)Fish plates fit the top of the rail foot
C)Fish plates fit the web of the rail section
D)Cross sectional area of fish plates, is normally the same as that of the rail section

Question 22

Pick up the correct statement from the following:

A)Length of tongue rail should be greater than rigid wheel base of vehicle
B)Stock rail should be longer than tongue rail
C)Length of stock rail ahead of the toe should be a minimum of 1.65 m
D)All the above

Question 23

Fish plate is in contact with rail at

A)Web of rail
B)Fishing plane
C)Head of rail
D)Foot of rail

Question 24

In railways a triangle is mainly provided for

A)Diverting trains from the main line to branch line
B)Crossing over between parallel tracks
C)Changing direction of engines through 180°
D)Shunting wagons in yards

Question 25

Minimum gradient in station yards is generally limited to

A)1 in 1000
B)1 in 750
C)1 in 500
D)Zero

Question 26

If L₁ and L₂ are actual and theoretical lengths of a tongue rail, d is heel divergence and t is thickness

A)sin ^-1 (d - t/L₁)
B)tan ^-1 (d - t/L₁)
C)sin ^-1 (d - t/L₂)
D)tan ^-1 (d - t/L₂)

Question 27

If a is average number of peaks more than 10 mm of unevenness 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

A)Ic = 10 - a - b - c/4
B)Ic = 20 - a - b - c/4
C)Ic = 30 - a - b - c/4
D)Ic = 40 - a - b - c/4

Question 28

Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of size 275 × 25 × 13 cm with 75 cm sleeper spacing is

A)15 cm
B)20 cm
C)25 cm
D)30 cm

Question 29

On a straight railway track, absolute levels at point A on two rails are 100.550 m and 100.530 m and the absolute levels at point B 100 m apart are 100.585 m and 100.515 m respectively, the value of twist of rails per metre run, is

A)0.4 mm
B)0.5 mm
C)0.7 mm
D)0.8 mm

Question 30

The sleepers resting directly on girder are fastened to the top flange of girder by

A)Hook bolts
B)Dog spikes
C)Fang bolts
D)Rail screws

Question 31

The sleepers which satisfy the requirements of an ideal sleeper, are

A)Cast iron sleepers
B)R.C.C. sleepers
C)Steel sleepers
D)Wooden sleepers

Question 32

The side of a rail diamond may be obtained by dividing the gauge of track by

A)Sine of acute crossing
B)Cosine of acute crossing
C)Tangent of acute crossing
D)Cotangent of acute crossing

Question 33

The standard length of rail for Broad Gauge and Meter Gauge are respectively

A)12 m and 12 m
B)12 m and 13 m
C)13 m and 12 m
D)13 m and 13 m

Question 34

Coning of wheels is provided

A)To check lateral movement of wheels
B)To avoid damage to inner faces of rails
C)To avoid discomfort to passengers
D)All the above

Question 35

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

A)Cole's method
B)Centre line method
C)Isosceles triangle method
D)Both (a) and (b)

Question 36

Which of the following factors govern the choice of the gauge?
(i. Volume and nature of traffic
(ii. Speed of train
(iii) Physical features of the country
The correct answer is

A)Only (i)
B)Both (i) and (ii)
C)Both (ii) and (iii)
D)(i), (ii) and (iii)

Question 37

Ballast packed below and around the sleepers to transfer the load from sleepers to formation, generally consists of

A)Broken stones
B)Gravels
C)Moorum
D)All the above

Question 38

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

A)Weight of the rail/axial load of locomotive = 1/10
B)Weight of the rail/axial load of locomotive = 1/410
C)Weight of the rail/axial load of locomotive = 1/510
D)Weight of the rail/axial load of locomotive = 1/610

Question 39

The maximum degree of curvature for Meter Gauge is limited to

A)10°
B)16°
C)30°
D)40°

Question 40

The grade compensation on B.G. tracks on Indian Railways, is

A)0.02 %
B)0.03 %
C)0.04 %
D)0.05 %

Question 41

The factor for deciding the type of sleeper, is

A)Easy fixing and removal of rails
B)Provision of sufficient bearing area for rails
C)Initial and maintenance costs
D)All the above

Question 42

Number of keys used in CST-9 sleeper is

A)2
B)3
C)4
D)None of the above

Question 43

Wheels of a rolling stock are provided flanges on

A)Outer side
B)Inner side
C)Both sides
D)Neither side

Question 44

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

A)One hole
B)Two holes
C)Three holes
D)Four holes

Question 45

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

A)70/R
B)52.5/R
C)35/R
D)105/RR

Question 46

To design a cross-over between parallel tracks, the required components are:

A)Two switch points, two acute angle crossings and two check rails
B)Two switch points, two acute angle crossings and four check rails
C)Two switch points, two acute angle crossings and six check rails
D)None of these

Question 47

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

A)3.35 m
B)3.53 m
C)2.30 m
D)2.50 m

Question 48

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

A)CL = L - SL
B)L =CL - SL
C)SL = L + CL
D)L = (CL + SL)/2

Question 49

Pot sleepers are in the form of

A)A number of bowls connected together with a tie bar
B)Two bowls placed under each rail and connected together with a tie bar
C)Two bowls placed under two rails and the one between the rails
D)None of these

Question 50

Bending of rail ends due to loose packing under a joint and loose fish Bolts, is known

A)Buckling
B)Hogging
C)Creeping
D)None of these