Question 1

Largest dimension of a rail is its

Accepted Answer

A) Height 
B) Foot width 
C) Head width 
D) Any of the above

Question 2

If D is distance between centres of two parallel tracks of gauge G with entire curved leads and equal angles of crossing, total length of crossover, is

Accepted Answer

A) $\sqrt{D (4R - 2G - 
D) }$ 
B) $\sqrt{D (3R - 2G -
D) }$ 
C) $\sqrt{D (3R + 2G - 
D) }$ 
D) $\sqrt{D (4 + 2G - 
D) }$

Question 3

Rails are fixed on steel sleepers

Accepted Answer

A) By bearing plates 
B) By dog spikes 
C) By keys in lugs or jaws 
D) None of these

Question 4

Metal sleepers are superior to wooden sleepers with respect to

Accepted Answer

A) Cost 
B) Life 
C) Track circuiting 
D) Fastening

Question 5

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

Accepted Answer

A) 3° or less 
B) 3° to 4½° 
C) More than 4½° 
D) None of these

Question 6

Consider the following statements:Automatic signalling system results in
1) Greater risk
2) Higher efficiency
3) Avoidance of block instruments
4) Higher operating cost
Of these statements

Accepted Answer

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

Question 7

Which of the following mechanical devices is used to ensure that route cannot be changed while the train is on the point even after putting back the signal?

Accepted Answer

A) Detectors 
B) Point lock 
C) Iock bar 
D) Stretcher bar

Question 8

The limiting value of cant excess for Broad Gauge is

Accepted Answer

A) 55 mm 
B) 65 mm 
C) 75 mm 
D) 100 mm

Question 9

Rail joint supported on a single sleeper, is known

Accepted Answer

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

Question 10

For developing thinly populated areas, the correct choice of gauge is

Accepted Answer

A) Broad Gauge 
B) Meter Gauge 
C) Narrow Gauge 
D) Any of the above

Question 11

The formation width for a double line Broad Gauge track in cutting (excluding drains) as adopted on Indian Railways is

Accepted Answer

A) 6.10 m 
B) 8.84 m 
C) 10.21 m 
D) 10.82 m

Question 12

The height of the rail for 52 kg rail section is

Accepted Answer

A) 143 mm 
B) 156 mm 
C) 172 mm 
D) 129 mm

Question 13

The rail section which is not used on Indian metre gauge tracks, is

Accepted Answer

A) 25 R 
B) 30 R 
C) 35 R 
D) 40 R

Question 14

A kink is made in stock rails, ahead of the toe of switch at a distance of

Accepted Answer

A) 10 cm 
B) 15 cm 
C) 20 cm 
D) 30 cm

Question 15

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

Accepted Answer

A) a = L/4R 
B) a = L²/4R 
C) h = L²/8R 
D) h = L²/16R

Question 16

Regional Indian railways use different types of sleepers according to their

Accepted Answer

A) Availability 
B) Economy 
C) Suitability 
D) All the above

Question 17

Pot sleepers are used if degree of the curve does not exceed

Accepted Answer

A) 4° 
B) 5° 
C) 6° 
D) 7°

Question 18

A triangle of railway consists of

Accepted Answer

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

Question 19

A treadle bar is used for

Accepted Answer

A) Interlocking points and signal 
B) Setting points and crossings 
C) Setting marshalling yard signals 
D) Track maintenance

Question 20

The spike commonly used to fix rails to wooden sleepers in Indian railways, is

Accepted Answer

A) Dog spike 
B) Screw spike 
C) Round spike 
D) All the above

Exam 4: Railway Track Design and Construction