Question 1

Safe speed (V) on a curve of radius 970 metres provided with two transition curves on Board Gauge track, is
A)112 km/hour
B)122 km/hour
C)132 km/hour
D)142 km/hour

Accepted Answer

The safe speed (V) on a curve, especially for railway tracks, can be calculated using specific formulas that take into account factors such as the radius of the curve, cant, cant deficiency, and other parameters related to the track and vehicle dynamics. For a curve of radius 970 meters with transition curves on a Broad Gauge track, and without specific details on cant and cant deficiency, a general formula or empirical relation is often used in railway engineering to estimate safe speed. The given options suggest a specific context where empirical or standardized calculations are applied. The correct answer (C) 132 km/hour, likely follows from such a calculation specific to the standards or empirical formulas used in the railway sector for Broad Gauge tracks.

Question 2

Widening of gauge is provided if degree of the curve, is
A)3° or less
B)3° to 4½°
C)More than 4½°
D)None of these

Accepted Answer

Widening of gauge on railway tracks is typically provided for curves with a degree greater than 4½° to accommodate the longer wheelbase of the vehicles, ensuring that the wheels can negotiate the curve without undue flange friction or risk of derailment.

Question 3

The height of the rail for 52 kg rail section is
A)143 mm
B)156 mm
C)172 mm
D)129 mm

Accepted Answer

B

Question 4

The life of a wooden sleeper depends upon
A)Quality of its timber
B)Ability to resist decay
C)Resistance to weathering
D)All the above

Accepted Answer

The life of a wooden sleeper depends on the quality of its timber, its ability to resist decay, and its resistance to weathering, making all the options relevant.

Question 5

Anti-creep anchors are fixed to rails by
A)Wedging
B)Spring grip
C)Clamping
D)All the above

Accepted Answer

Anti-creep anchors can be fixed to rails using various methods including wedging, spring grip, and clamping.

Question 6

Sleeper density in India is normally kept as
A)(M + 2) to (M + 7)
B)M to (M + 2)
C)(M + 5) to (M + 10)
D)MM

Accepted Answer

Sleeper density in India is normally kept as (M + 2) to (M + 7), where M is the length of the rail in meters. This formula helps in determining the number of sleepers required per rail length to ensure stability and proper load distribution of the tracks.

Question 7

Composite sleeper index determines
A)Number of sleepers per rail length
B)Suitability of wooden sleepers
C)Permissible stresses in steel sleepers
D)None of these

Accepted Answer

The answer of Composite sleeper index determines
A)Number of sleepers per...

Question 8

If G is gauge distance and a is crossing, the distance between the nose of acute crossing and nose of obtuse crossing of a rail diamond, measured along the rail not forming the diamond, is
A)G cot ?
B)G tan ?
C)G sin ?
D)G cos ?

Accepted Answer

The correct formula for the distance between the nose of acute crossing and nose of obtuse crossing of a rail diamond, measured along the rail not forming the diamond, is given by G cot ?, where G is the gauge distance and ? represents the angle of the crossing.

Question 9

Loose jaws of steel trough sleepers are made of
A)Cast steel
B)Mild steel
C)Cast iron
D)Spring steel

Accepted Answer

The answer of Loose jaws of steel trough sleepers are...

Question 10

Regional Indian railways use different types of sleepers according to their
A)Availability
B)Economy
C)Suitability
D)All the above

Accepted Answer

Regional Indian railways select different types of sleepers based on their availability, economy, and suitability to ensure efficient and cost-effective rail infrastructure.

Question 11

In Indian railways, the ratio of axle load and weight of rail, is
A)312
B)412
C)512
D)600

Accepted Answer

The correct ratio of axle load to the weight of rail in Indian railways is generally considered to be 5:1.2, which simplifies to 5/1.2 = 4.17, closely approximating option C when rounded.

Question 12

Maximum value of 'throw of switch' for Broad Gauge track is
A)89 mm
B)95 mm
C)100 mm
D)115 mm

Accepted Answer

The maximum value of 'throw of switch' for Broad Gauge track is 115 mm, which is the standard measurement used in railway engineering for this type of track.

Question 13

Top surface of steel sleepers, is
A)Kept level throughout
B)Provided a cant of 1 in 20 inward
C)Provided a cant of 1 in 20 outward
D)None of these

Accepted Answer

The top surface of steel sleepers is provided a cant of 1 in 20 inward to facilitate proper drainage and ensure the correct positioning of the rails.

Question 14

If D gle of crossing, the distance between the noses of crossing measured parallel to the main track, is
A)D tan ?
B)D sec ?
C)D cosec ?
D)D cot ?

Accepted Answer

The answer of If D gle of crossing, the distance...

Question 15

Metal sleepers are superior to wooden sleepers with respect to
A)Cost
B)Life
C)Track circuiting
D)Fastening

Accepted Answer

Metal sleepers have a longer lifespan than wooden sleepers.

Question 16

Charles Blacker Vignoles invented the flat footed rails in
A)1814
B)1836
C)1846
D)1856

Accepted Answer

Charles Blacker Vignoles introduced the flat-bottomed rail, a significant advancement in railway technology, in 1836. This design became widely adopted and is still in use today, known as the "Vignoles rail."

Question 17

A triangle of railway consists of
A)Three turn outs
B)One turn out and two diamonds
C)Two turn outs and one split
D)One turn out, one split and one diamond

Accepted Answer

The answer of A triangle of railway consists of
A)Three turn...

Question 18

A treadle bar is used for
A)Interlocking points and signal
B)Setting points and crossings
C)Setting marshalling yard signals
D)Track maintenance

Accepted Answer

A treadle bar is used for interlocking points and signals to ensure the safe movement of trains by detecting the presence of a train on a track section.

Question 19

If L is length of a rail and R is the radius of a curve, the versine h for the curve, is
A)a = L/4R
B)a = L²/4R
C)h = L²/8R
D)h = L²/16R

Accepted Answer

The correct formula for the versine (h) of a curve is h = L²/8R, where L is the length of the rail and R is the radius of the curve. This formula is used in railway engineering to calculate the elevation of the outer rail on a curve to counteract the effect of centrifugal force.

Question 20

For metal sleepers with rounded edges, maximum size of ballast, is
A)50 mm
B)40 mm
C)30 mm
D)25 cm

Accepted Answer

For metal sleepers with rounded edges, the maximum size of ballast recommended is 40 mm. This size is chosen to ensure proper support and stability for the sleepers while allowing for adequate drainage and minimizing the risk of ballast crushing under load.

Quiz 4: Railway Track Design and Construction

Safe speed (V) on a curve of radius 970 metres provided with two transition curves on Board Gauge track, is

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

The height of the rail for 52 kg rail section is

The life of a wooden sleeper depends upon

Anti-creep anchors are fixed to rails by

Sleeper density in India is normally kept as

Composite sleeper index determines

If G is gauge distance and a is crossing, the distance between the nose of acute crossing and nose of obtuse crossing of a rail diamond, measured along the rail not forming the diamond, is

Loose jaws of steel trough sleepers are made of

Regional Indian railways use different types of sleepers according to their

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

Maximum value of 'throw of switch' for Broad Gauge track is

Top surface of steel sleepers, is

If D gle of crossing, the distance between the noses of crossing measured parallel to the main track, is

Metal sleepers are superior to wooden sleepers with respect to

Charles Blacker Vignoles invented the flat footed rails in

A triangle of railway consists of

A treadle bar is used for

If L is length of a rail and R is the radius of a curve, the versine h for the curve, is

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