Railways

Question 1

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

Answer 1

two switch points, two acute angle crossings and four check rails

Question 2

Boxing of ballast is done

Answer 2

At the rails

Question 3

Best ballast contains stones varying in size from

Answer 3

2 to 5cm

Question 4

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

Answer 4

flat footed rails

Question 5

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

Answer 5

44 mm

Question 6

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

Answer 6

wooden sleepers

Question 7

Pot sleepers are in the form of

Answer 7

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

Question 8

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

Answer 8

4°

Question 9

A scissors cross-over consists of

Answer 9

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

Question 10

To prevent percolation of water into form

Answer 10

Black cotton soil

Question 11

Distance between inner faces of the flanges, is kept

Answer 11

slightly less than the gauge distance

Question 12

Over all depth of dog spike

Answer 12

120.6 mm

Question 13

The tread of wheels is provided an outward slope of

Answer 13

1 in 20

Question 14

Bearing plates are used to fix

Answer 14

flat footed rails to the wooden sleepers

Question 15

A welded rail joint is generally

Answer 15

Suspended

Question 16

Arrangement made to divert the trains from one track to another, is known as

Answer 16

Turnout

Question 17

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

Answer 17

4 fish bolts

Question 18

For providing the required tilt of rails, adazing of wooden sleepers, is done for

Answer 18

flat footed rails

Question 19

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

Answer 19

heel of crossing

Question 20

A scissors cross over consists of one diamond and

Answer 20

Four turnouts

Question 21

Type of switch rails generally adopted for modern track, is

Answer 21

Curve switch

Question 22

Composite sleeper index determines

Answer 22

suitability of wooden sleepers

Question 23

The place where a railway line and a road cross each other at the same level, is known as

Answer 23

Level crossing

Question 24

A triangle used for turning the face of locomotives, consists of

Answer 24

Two turnouts and one split

Question 25

Stock rails are

Answer 25

Fitted against toungue rail

Question 26

Gauge of a permanent way, is

Answer 26

minimum distance between running faces of rails

Question 27

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

Answer 27

switch angle

Question 28

Top surface of steel sleepers, is

Answer 28

provided a cant of 1 in 20 inward

Question 29

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

Answer 29

diamond crossing with double slip

Question 30

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

Answer 30

Overriding swith

Question 31

A turn-in-curve is defined as

Answer 31

a reverse curve introduced in continuity of a turn out

Question 32

Steel sleepers are

Answer 32

6 mm thick steel sheets with ends bent down

Question 33

Staggered rail joints are generally provided

Answer 33

on curves

Question 34

Bull headed rails are generally provided on

Answer 34

points and crossing

Question 35

Spacing of sleepers

Answer 35

at the middle of rails, is kept closer

Question 36

Packing of ballast is done

Answer 36

Under sleepers

Question 37

Rails are fixed on steel sleepers

Answer 37

By keys in lugs or jaws

Question 38

In a diamond crossing, number of noses are

Answer 38

6

Question 39

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

Answer 39

hogging

Question 40

The rails get out of their original positions due to insufficient expansion gap. This phenomenon is known

Answer 40

Buckling