Deck 5: Railway Track and Infrastructure Maintenance

Question 1

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

A)2°
B)4°
C)6°
D)8°

Answer 1

6°

Question 2

60 R rails are mostly used in

A)Broad Gauge
B)Metre Gauge
C)Narrow Gauge
D)None of the above

Answer 2

Metre Gauge

Question 3

A welded rail joint is generally

A)Supported on a sleeper
B)Supported on a metal plate
C)Suspended
D)None of these

Answer 3

Suspended

Question 4

If the standard length of a crossing is 480 cm, the number of crossing is

A)1 in 8½ of B.G.
B)1 in 8½ of M.G.
C)Both (a) and (b)
D)None of these

Question 5

Width of ballast section for Broad Gauge is

A)1.83 m
B)2.25 m
C)3.35 m
D)4.30 m

Question 6

Minimum length of a transition curve required for

A)2° curves for a maximum permissible speed of 135 km/hr, is 220 metres
B)4° curves for a maximum permissible speed of 95 km/hr, is 220 metres
C)6° curves for a maximum permissible speed of 80 km/hr, is 220 metres
D)All the above

Question 7

For points and crossings, maximum size of ballast, is

A)50 mm
B)40 mm
C)30 mm
D)25 mm

Question 8

Which of the following methods of designation of crossing is mostly used in India?

A)Center line method
B)Right angle method
C)Isosceles angle method
D)None of the above

Question 9

For calculating the length of curve lead (C.L.), the correct formula is

A)C.L. = G. cot ?/2
B)C.L. = $\sqrt{2IG}$
C)C.L. = 2 GN
D)all the above

Question 10

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

A)G + 0.1 mm
B)G + 1.5 mm
C)G - 1.0 mm
D)G - 1.5 mm

Question 11

Yellow light-hand signal indicates

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

Question 12

The first Indian railway was laid in

A)1775
B)1804
C)1825
D)1853

Question 13

Sand may be used as ballast for

A)Wooden sleepers
B)Steel sleepers
C)Cast iron sleepers
D)All the above

Question 14

What will be the curve lead for a 1 in 8.5 turnout taking off from a straight broad gauge track?

A)28.49 m
B)21.04 m
C)14.24 m
D)7.45 m

Question 15

A scissors cross-over consists of

A)Two pairs of points, four acute angle crossings and two obtuse angle crossings
B)Four pairs of points, four acute angle crossings and four obtuse angle crossings
C)Four pairs of points, six acute angle crossings and two obtuse angle crossings
D)Two pairs of points, six acute angle crossings and four obtuse angle crossings

Question 16

The effective bearing area of all types of sleepers, is

A)0.40 m²
B)0.42 m²
C)0.44 m²
D)0.46 m²

Question 17

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

A)6155 mm²
B)6615 mm²
C)7235 mm²
D)7825 mm²

Question 18

If ? is switch angle and R is radius of the turnout, the length of the tongue rail, is

A)R sin ?
B)R tan ?
C)R sin ?/2
D)R tan ?/2

Question 19

Steel sleepers are

A)Rectangular is cross section throughout
B)Hollow circular pipes
C)6 mm thick steel sheets with ends bent down
D)6 mm thick steel sheets with ends bent up

Question 20

Number of dog spikes normally used per rail seat on curved track is

A)One on either side
B)Two outside and one inside
C)One outside and two inside
D)Two outside and two inside

Question 21

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

A)1455
B)1355
C)1255
D)1155

Question 22

The shape of transition curve used by Indian Railways is

A)Cubic parabola
B)Spiral
C)Sine curve
D)Lemniscates of Bernoulli

Question 23

Gauge of a permanent way, is

A)Minimum distance between running faces of rails
B)Minimum distance between outer faces of rails
C)Distance between centres of rails
D)Width of formation

Question 24

If w is width of sleepers, s is sleeper spacing and d is depth of ballast then

A)d = (s - w)/2
B)d = (s - w)/3
C)d = (s - w)/4
D)d = (s - w)/5

Question 25

The reception signal is
(i. Outer signal
(ii. Home signal
(iii) Starter
(iv. Advanced starter
The correct answer is

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

Question 26

The standard width of ballast for B.G. Track in Indian Railways, is kept

A)3.35 m
B)3.53 m
C)2.35 m
D)2.53 m

Question 27

In India, metre gauge permanent way was adopted in

A)1855
B)1860
C)1866
D)1871

Question 28

Which one of the following rail failures is caused by loose fish bolts at expansion joints?

A)Crushed head
B)Angular break
C)Split head
D)Transverse fissures

Question 29

Best wood for wooden sleepers is

A)Chir
B)Deodar
C)Sal
D)Teak

Question 30

Bull headed rails are generally provided on

A)Points and crossing
B)Straight tangents
C)Curved tracks
D)Metre gauge tracks

Question 31

The type of bearing plate used in all joints and on curves to give better bearing area to the rails is

A)Flat mild steel bearing plate
B)Mild steel canted bearing plate
C)Cast iron anti-creep bearing plate
D)None of the above

Question 32

For holding a rail in position, no chairs are used for

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

Question 33

Cast iron sleeper, is

A)Pot sleeper
B)Box sleeper
C)Duplex sleeper
D)All the above

Question 34

Gauge is the distance between

A)Center to center of rails
B)Running faces of rails
C)Outer faces of rails
D)None of the above

Question 35

Pick up the correct statement from the following:

A)Rails are directly laid over hard wooden sleepers and fixed with spikes
B)Adzing is done on hard wooden sleepers
C)Bearing plates are used on soft wooden sleepers
D)All the above

Question 36

Rail section is generally designated by its

A)Total weight
B)Total length
C)Weight per metre length
D)Area of its cross-section

Question 37

At points and crossings, the total number of sleepers for 1 in 12 turnouts in Broad Gauge is

A)51
B)62
C)70
D)78

Question 38

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

A)1.15 m³
B)1.14 m³
C)1.13 m³
D)1.11 m³

Question 39

Weight and cross section of the rails are decided on

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

Question 40

Number of switches provided on a Gaunt-letted track is

A)1
B)2
C)3
D)None of the above

Question 41

If S is cant deficiency in centimetres and V is maximum permissible speed in kmph, the maximum length of transition curves, is

A)SV/13.6
B)SV/19.8
C)SV/127
D)SV/16.8

Question 42

A train is hauled by 4-8-2 locomotive. The number of driving wheels in this locomotive is

A)4
B)8
C)12
D)14

Question 43

Maximum cant deficiency prescribed on Indian Board Gauge Railways, is

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

Question 44

Vertical curves are provided where algebraic difference between grades is equal to or

A)Less than 2 mm/m
B)More than 2 mm/m
C)Less than 4 mm/m
D)More than 4mm/m

Question 45

A scissors cross over consists of one diamond and

A)one turn out
B)Two turn outs
C)Three turn outs
D)Four turn outs

Question 46

The slipping of driving wheels of locomotives on the rail surface causes

A)Wheel burns
B)Hogging of rails
C)Scabbing of rails
D)Corrugation of rails

Question 47

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

A)Sal
B)Chir
C)Teak
D)Deodar

Question 48

To ensure exact gauge, the gauge tie plates are provided at

A)Toe of the switch
B)Nose of crossing
C)Both (A) and (B)
D)None of the above

Question 49

If G is gauge is metres, V is speed of trains in km/hour and R is radius of a curve in metres, the equilibrium super elevation is

A)GV²/R
B)GV²/17R
C)GV²/127R
D)GV²/130R

Question 50

The height of the center of arm of a semaphore signal above the ground is

A)5.5 m
B)6.5 m
C)7.5 m
D)8.5 m

Question 51

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

A)9.5 m
B)7.5 m
C)5.5 m
D)5.0 m

Question 52

The steepest gradient permissible on a 2.5° curve for Broad Gauge line having ruling gradient of 1 in 200 is

A)1 in 250
B)1 in 222
C)1 in 235
D)1 in 275

Question 53

The tread of wheels is provided an outward slope of

A)1 in 10
B)1 in 15
C)1 in 20
D)1 in 25

Question 54

When the rail ends rest on a joint sleeper, the joint is termed as

A)Supported rail joint
B)Suspended rail joint
C)Bridge joint
D)Base joint

Question 55

To prevent percolation of water into formation, moorum is used as a blanket for

A)Black cotton soil
B)Sandy soil
C)Clayey soil
D)All the above

Question 56

Number of fish bolts per fish plate is

A)2
B)4
C)5
D)6

Question 57

For flat bottom sleepers, maximum size of ballast, is

A)50 mm
B)40 mm
C)33 mm
D)25 mm

Question 58

Which of the following turnouts is most commonly used for goods train on Indian Railways?

A)1 in 8'/2
B)1 in 12
C)1 in 16
D)1 in 20

Question 59

On Indian Railways standard length of rails for M.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 60

The nominal size of ballast used for points and crossings is

A)25 mm
B)40 mm
C)50 mm
D)10 mm

Question 61

The overall length of a turn out is the distance between the end of stock rail and

A)Heel of crossing
B)Actual nose of crossing
C)Throat of crossing
D)Toe of crossing

Question 62

The width of foot for 90 R rail section is

A)100 mm
B)122.2 mm
C)136.5 mm
D)146.0 mm

Question 63

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

A)1857
B)1867
C)1877
D)1887

Question 64

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

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

Question 65

Minimum packing space provided between two sleepers, is between

A)20 to 25 cm
B)25 to 30 cm
C)30 to 35 cm
D)35 to 40 cm

Question 66

Dog spikes are used for fixing rail to the

A)Wooden sleepers
B)CST-9 sleepers
C)Steel trough sleepers
D)Concrete sleepers

Question 67

Distance between inner faces of the flanges, is kept

A)Equal to the gauge distance
B)Slightly less than the gauge distance
C)Slightly more than the gauge distance
D)None of these

Question 68

Anti-creep bearing plates are provided on

A)Bridges and approaches
B)Joints
C)Both (A) and (B)
D)None of the above

Question 69

A mono-block sleeper has

A)Square section
B)Rectangular section
C)Trapezoidal section
D)Semi-circular section

Question 70

The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called

A)Flange-way clearance
B)Heel divergence
C)Throw of the switch
D)None of the above

Question 71

Coal ash (or cinder) is used in initial stages of a new construction of railway for

A)Wooden sleepers
B)Steel sleepers
C)Cast iron sleepers
D)None of these

Question 72

Normally the limiting value of cant is

A)G/8
B)G/10
C)G/12
D)G/15

Question 73

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

A)69.85 mm
B)63.50 mm
C)66.77 mm
D)136.52 mm

Question 74

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

A)1°
B)2°
C)3°
D)4°

Question 75

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

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

Question 76

Boxing of ballast is done

A)Under rails
B)At the rails
C)In between two rails
D)In between two sleepers

Question 77

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

A)4.096 m
B)5.096 m
C)6.096 m
D)7.096 m