Latest Railway Engineering Objective Questions For Freshers
1.60 R rails are mostly used in
Broad Gauge
Metre Gauge
Narrow Gauge
none of the above
ANSWER : : Metre Gauge
2.The standard length of rail for Broad Gauge and Meter Gauge are respectively
12 m and 12 m
12 m and 13 m
13 m and 12 m
13 m and 13 m
ANSWER : : 13 m and 12 m
3.The cross-sectional area of 52 kg flat footed rail is
6155 mm2
6615 mm2
7235 mm2
7825 mm2
ANSWER : : 6615 mm2
4.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
only (i)
both (i) and (ii)
both (ii) and (iii)
(i), (ii) and (iii)
ANSWER : : (i), (ii) and (iii)
5.The purpose of providing fillet in a rail section is to
increase the lateral strength
increase the vertical stiffness
avoid the stress concentration
reduce the wear
ANSWER : : avoid the stress concentration
6.The formation width for a single line meter gauge track in embankment as adopted on Indian Railways is
4.27 m
4.88 m
5.49 m
6.10 m
ANSWER : : 4.88 m
7.For developing thinly populated areas, the correct choice of gauge is
Broad Gauge
Meter Gauge
Narrow Gauge
any of the above
ANSWER : : Narrow Gauge
8.Tensile strength of steel used in rails should not be less than
450 MPa
500 MPa
700 MPa
850 MPa
ANSWER : : 700 MPa
9.The formation width for a railway track depends on the i) type of gauge ii) number of tracks to be laid side by side iii) slope of sides of embankment or cutting The correct answer is
only (i)
both (i) and (ii)
both (i) and (iii)
(i), (ii) and (iii)
ANSWER : : both (i) and (ii)
Explanation :
10.The slipping of driving wheels of locomotives on the rail surface causes
wheel burns
hogging of rails
scabbing of rails
corrugation of rails
ANSWER : : wheel burns
11.Ordinary rails are made of
mild steel
cast iron
wrought iron
high carbon steel
ANSWER : : high carbon steel
12.The main function of a fish plate is
to join the two rails together
to join rails with the sleeper
to allow rail to expand and contract freely
none of the above
ANSWER : : to join the two rails together
13.Head width of 52 kg rail section is
61.9 mm
66.7mm
67mm
72.33 mm
ANSWER : : 67mm
14.52 kg rails are mostly used in
Broad Gauge
Meter Gauge
Narrow Gauge
both (a) and (b)
ANSWER : : Broad Gauge
15.Two important constituents in the com-position of steel used for rail are
carbon and silicon
manganese and phosphorous
carbon and manganese
carbon and sulfur
ANSWER : : carbon and manganese
16.Gauge is the distance between
center to center of rails
running faces of rails
outer faces of rails
none of the above
ANSWER : : running faces of rails
17.The height of the rail for 52 kg rail section is
143 mm ,
156 mm
172 mm ‘
129mm
ANSWER : : 156 mm
18.Largest percentage of material in the rail is in its
head
web
foot
head and foot both
ANSWER : : head
19.The width of foot for 90 R rail section is
100 mm
122.2 mm
136.5 mm
146.0 mm
ANSWER : : 136.5 mm
20.Number offish bolts per fish plate is
2
4
5
6
ANSWER : : 4
21.Due to battering action of wheels over the end of the rails, the rails get bent down and are deflected at ends. These rails are called
roaring rails
hogged rails
corrugated rails
buckled rails
ANSWER : : hogged rails
22.Largest dimension of a rail is its
height
foot width
head width
any of the above
ANSWER : : height
23.Fish plate is in contact with rail at
web of rail
fishing plane
head of rail
foot of rail
ANSWER : : fishing plane
24.The following tests are conducted for rails: i) falling weight test ii) tensile test iii) hammer test The compulsory tests are
only (i)
(i)and(ii)
(ii) and (iii)
(i) and (iii)
ANSWER : : (i)and(ii)
25.At points and crossings, the total number of sleepers for 1 in 12 turnouts in Broad Gauge is
51
62
70
78
ANSWER : : 70
26.The total gap on both sides between the inside edges of wheel flanges and gauge faces of the rail is kept as
10mm
13mm
16mm
19 mm
ANSWER : : 19 mm
27.Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of size 275x25x13 cm with 75cm sleeper spacing is
15 cm
20 cm
25 cm
30cm
ANSWER : : 25 cm
28.When the rail ends rest on a joint sleeper, the joint is termed as
supported rail joint
suspended rail joint
bridge joint
base joint
ANSWER : : supported rail joint
29.Flat mild steel bearing plates are used
for points and crossings in the lead portion
with wooden sleepers at locations where creep is likely to be developed
on all joints and curves
on all the above
ANSWER : : for points and crossings in the lead portion
30.Loose jaws of steel trough sleepers are made of
cast steel
mild steel
cast iron
spring steel
ANSWER : : spring steel
31.The maximum degree of curvature for Meter Gauge is limited to
10�
16�
30�
40�
ANSWER : s: b
32.Staggered joints are generally provided
on curves
on straight track
when two different rail sections are required to be joined
none of the above
ANSWER : : on curves
33.The sleepers resting directly on girder are fastened to the top flange of girder by
hook bolts
dog spikes
fang bolts
rail screws
ANSWER : : hook bolts
34.Study the following statements regarding creep. i) Creep is greater on curves than on tangent railway track, ii) Creep in new rails is more than that in old rails, iii) Creep is more on steep gradients than on level track. The correct answer is
only (i)
(i)and(ii)
(ii) and (iii)
(i), (ii) and (iii)
ANSWER : : (i)and(ii)
35.The formation width for a double line Broad Gauge track in cutting (excluding drains) as adopted on Indian Railways is
6.10 m
8.84 m
10.21m
10.82 m
ANSWER : : 10.21m
36.The nominal size of ballast used for points and crossings is
25 mm
40 mm
50 mm
10mm
ANSWER : : 25 mm
37.Dog spikes are used for fixing rail to the
wooden sleepers
CST-9 sleepers
steel trough sleepers
concrete sleepers
ANSWER : : wooden sleepers
38.Which of the following types of sleepers is preferred on joints ?
CST-9 sleeper
steel trough sleeper
wooden sleeper
concrete sleeper
ANSWER : : wooden sleeper
39.Width of ballast section for Broad Gauge is
1.83 m
2.25 m
3.35 m
4.30 m
ANSWER : : 3.35 m
40.Creep is the
longitudinal movement of rail
lateral movement of rail
vertical movement of rail
difference in level of two rails
ANSWER : : longitudinal movement of rail
41.Standard size of wooden sleeper for Broad Gauge track is
275x25x13cm
180x20x11.5 cm
225x23x13 cm
250x26x12 cm
ANSWER : s: a
42.For a Broad Gauge route with M+7 sleeper density, number of sleepers per rail length is
18
19
20
21
ANSWER : : 20
43.Number of dog spikes normally used per rail seat on curved track is
one on either side
two outside and one inside
one outside and two inside
two outside and two inside
ANSWER : : two outside and one inside
44.Composite sleeper index is the index of
hardness and strength
strength and toughness
toughness and wear resistance
wear resistance and hardness
ANSWER : : hardness and strength
45.Sleeper density in India is normally kept as
M + 2 to M + 7
MtoM+2
M + 5toM+10
M
ANSWER : re M is the rail length in meters.
46.Anti creep bearing plates are provided on
bridges and approaches
joints
both (a) and (b)
none of the above
ANSWER : : none of the above
47.Number of keys used in CST-9 sleeper is
2
3
4
none of the above
ANSWER : : 2
48.The type of spike used for fixing chairs of bull headed rails to wooden sleepers is
dog spike
rail screw
elastic spike
round spike
ANSWER : : round spike
49.The type of bearing plate used in all joints and on curves to give better bearing area to the rails is
flat mild steel bearing plate
mild steel canted bearing plate
cast iron anti creep bearing plate
none of the above
ANSWER : : mild steel canted bearing plate
50.Minimum composite sleeper index pres-cried on Indian Railways for a track sleeper is
552
783
1352
1455
ANSWER : : 783
51.A Broad Gauge branch line takes off as a contrary flexure from a main line If the superelevation required for branch line is 10 mm and cant deficiency is 75 mm, the superelevation to be actually provided on the branch line will be
10 mm
64 mm
85 mm
65 mm
ANSWER : : 65 mm
52.Vertical curves are provided where algebraic difference between grades is equal to or
less than 2 mm/m
more than 2 mm/m
less than 4 mm/m
more than 4mm/m
ANSWER : : more than 4mm/m
53.The limiting value of cant excess for Broad Gauge is
55 mm
65 mm
75 mm
l00 mm
ANSWER : : 75 mm
54.Normally the limiting value of cant is
G/8
G/10
G/12
G/15
ANSWER : re G is the gauge.
55.Switch angle depends on i) heel divergence ii) length of tongue rail iii) flangeway clearance iv) throw of switch The correct answer is
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i)and(iv)
ANSWER : : (i) and (ii)
56.The compensation for curvature on gradient for Meter Gauge is given by
70/R
52.5/R
35/R
105/R
ANSWER : re R is radius of curve.
57.Cant deficiency occurs when a vehicle travels around a curve at
equilibrium speed
speeds higher than equilibrium speed
speeds lower than equilibrium speed
booked speed
ANSWER : : speeds higher than equilibrium speed
58.Switch angle is the angle between
the gauge face of the stock rail and tongue rail
the outer face of the stock rail and tongue rail
the gauge face of the stock rail and outer face of the tongue rail
the outer face of the stock rail and the gauge face of the tongue rail
ANSWER : : the gauge face of the stock rail and tongue rail
59.Number of switches provided on a Gaunt-letted track is
1
2
3
none of the above
ANSWER : : none of the above
60.If a is the angle of crossing, then the number of crossings ‘N’ according to right angle method is given by
Vi cot(cc/2)
cot(oc/2)
cot(a)
Vi cosec(a/2)
ANSWER : : cot(a)
61.Stretcher bar is provided
to permit lateral movement of the tongue rail
to maintain the two tongue rails at the exact distance
to ensure exact gauge at the toe of the switch as well as the nose of crossing
to prevent any vertical movement between the wing rail and nose of crossing
ANSWER : : to maintain the two tongue rails at the exact distance
62.Maximum value of ‘throw of switch’ for Broad Gauge track is
89 mm
95 mm
100 mm
115mm
ANSWER : : 115mm
63.The correct relation between curve lead (CL), switch lead (SL) and lead of cros�sing (L) is given by
CL = L – SL
L =CL-SL
SL = L + CL
L = (CL+SL)/2
ANSWER : s: b
64.The limiting value of cant gradient for all gauges is
1 in 360
1 in 720
1 in 1000
1 in 1200
ANSWER : : 1 in 720
65.Flangeway clearance is the distance
between the adjoining faces of the running rail and the check rail near the crossing
between the gauge faces of the stock rail and the tongue rail
through which the tongue rail moves laterally at the toe of the switch
none of the above
ANSWER : : between the adjoining faces of the running rail and the check rail near the crossing
66.Which of the following turnouts is most commonly used for goods train on Indian Railways ?
1 in 8’/2
1 in 12
1 in 16
1 in 20
ANSWER : : 1 in 8’/2
67.The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called
flangeway clearance
heel divergence
throw of the switch
none of the above
ANSWER : : throw of the switch
68.The desirable rate of change of cant deficiency in case of Meter Gauge is
20 mm/sec
35 mm/sec
55 mm/sec
65 mm/sec
ANSWER : : 35 mm/sec
69.The limiting value of cant deficiency for Meter Gauge routes is
40 mm
50mm
75mm
100mm
ANSWER : : 50mm
70.In a scissors cross-over, the crossings provided are i) 2 obtuse angle crossings ii) 4 obtuse angle crossings iii) 4 acute angle crossings iv) 6 acute angle crossings The correct answer is
(i) and (iii)
(i)and(iv)
(ii) and (iii)
(ii) and (iv)
ANSWER : : (i)and(iv)
71.One degree of curve is equivalent to
1600/R
1700/R
1750/R
1850/R
ANSWER : re R is the radius of curve in metres.
72.The steepest gradient permissible on a 2.5� curve for Broad Gauge line having ruling gradient of 1 in 200 is
1 in 250
1 in 222
1 in 235
1 in 275
ANSWER : : 1 in 250
73.Pandrol clips cannot be used with
wooden sleepers
concrete sleepers
CST-9 sleepers
steel trough sleepers
ANSWER : : CST-9 sleepers
74.Which of the following methods of designation of crossing is mostly used in India ?
centre line method
right angle method
isosceles angle method
none of the above
ANSWER : : right angle method
75.The shape of transition curve used by Indian Railways is
cubic parabola
spiral
sine curve
lemniscate of Bernoulli
ANSWER : : cubic parabola
76.Lead of crossing is the distance from the
heel of the switch to the toe of the switch
heel of the switch to the theoretical nose of the crossing
toe of the switch to the theoretical nose of crossing
toe of the switch to the actual nose of crossing
ANSWER : : heel of the switch to the theoretical nose of the crossing
77.Normally maximum cant permissible in Meter Gauge is
75 mm
90 mm
140 mm
165 mm
ANSWER : s: b
78.A train is hauled by 4-8-2 locomotive. The number of driving wheels in this locomotive is
4
8
12
14
ANSWER : : 8
79.The object of providing a point lock is
to ensure that each switch is correctly set
to ensure that the point may not be operated while the train is on it
to detect any obstruction between and tongue rail
none of the above
ANSWER : : to ensure that each switch is correctly set
80.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 ?
detectors
point lock
iock bar
stretcher bar
ANSWER : : iock bar
81.Which one of the following rail failures is caused by loose fish bolts at expansion joints?
crushed head
angular break
split head
transverse fissures
ANSWER : : crushed head
82.Wear of rails is maximum in weisht of
tangent track
sharp curve
tunnels
coastal area
ANSWER : : sharp curve
83.For a 8� curve track diverging from a main curve of 5� in an opposite direction in the layout of a broad gauge yard, the cant to be provided for the branch track for maximum speed of 45 km/h on the main line and ‘G’ = 1.676 m is (Permitted cant deficiency for the main line = 7.6 cm)
0.168 cm
-0.168 cm
7.432 cm
7.768 cm
ANSWER : : -0.168 cm
84.Consider the following statements about concrete sleepers. # They improve the track modulus. # They have good scrap value. # They render transportation easy. # They maintain the gauge quite satisfactorily. Of these statements
1 and 2 are correct
2 and 3 are correct
3 and 4 are correct
1 and 4 are correct
ANSWER : : 1 and 4 are correct
85.When semaphore and warner are installed on the same post, then the stop indication is given when
both arms are horizontal
semaphore arm lowered but warner arm horizontal
both semaphore and warner arms lowered
none of the above
ANSWER : : both arms are horizontal
86.On a single rail track, goods trains loaded with heavy iron material run starting from A to B and then empty wagons run from B to A. The amount of creep in the rails.
will be more in the direction of B to A
will be more in the direction of A to B
will be maximum at the middle of A andB
cannot be determined from the given data.
ANSWER : : will be more in the direction of A to B
87.A triangle is used for
changing the direction of engine
transferring wagons to and from parallel tracks without shunting
separating all the sidings and shunting lines from main lines
preventing the vehicles from running off the track
ANSWER : : changing the direction of engine
88.What will be the curve lead for a 1 in 8.5 turnout taking off from a straight broad gauge track?
28.49 m
21.04 m
14.24 m
7.45 m
ANSWER : : 28.49 m
89.For the purpose of track maintenance, the number of turn out equivalent to one track km are
1
2
5
10
ANSWER : : 10
90.Metal sleepers are superior to wooden sleepers with respect to
cost
life
track circuiting
fastening
ANSWER : : life
91.In a shunting signal if the red band is inclined at 45� it indicates
stop
proceed
proceed cautiously
none of the above
ANSWER : : proceed
92.A treadle bar is used for
interlocking points and signal
setting points and crossings
setting marshalling yard signals
track maintenance
ANSWER : : interlocking points and signal
93.Which of the following devices is used to transfer the wagons or locomotives to and from parallel tracks without any necessity of shunting ?
triangle
turntable
traverser
scotch block
ANSWER : : traverser
94.A train is hauled by 2-8-2 locomotive with 22.5 tonnes and on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive?
15.0 tonnes
22.5 tonnes
45.0 tonnes
90.0 tonnes
ANSWER : : 22.5 tonnes
95.Consider the following statements: Automatic signalling system results in # greater risk # higher efficiency # avoidance of block instruments # higher operating cost Of these statements
I and 2 are correct
3 and 4 are correct
1 and 4 are correct
2 and 3 are correct
ANSWER : : 2 and 3 are correct
96.Yellow lighthand signal indicates
stop
proceed
proceed cautiously
none of the above
ANSWER : s: c
97.The reception signal is i) outer signal ii) home signal iii) starter iv) advanced starter The correct answer is
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i)and(iv)
ANSWER : : (i) and (ii)
98.The load on each axle of a locomotive is 22 tonnes. If the coefficient of friction is 0.2, then the hauling capacity due to 3 pairs of driving wheels will be
26.41
19.81
13.21
6.61
ANSWER : : 13.21
99.To ensure exact gauge, the gauge tie plates are provided at
toe of the switch
nose of crossing
both (a) and (b)
none of the above
ANSWER : : both (a) and (b)
100.The treadle bar is provided
in the middle of the track a little in front of the toes of the tongue rail
near and parallel to inner side of one of the rails
at right angle to the rail
near and parallel to inner side of both the rails
ANSWER : : near and parallel to inner side of one of the rails
101.Consider the following surveys. # Reconnaissance survey # Preliminary survey # Traffic survey # Location survey The correct sequence in which these surveys are conducted before the alignment of a track is finalised is
1,3,2,4
1,3,4,2
3,1,4,2
3,1,2,4
ANSWER : : 3,1,2,4
102.The height of the centre of arm of a semaphore signal above the ground is
5.5m
6.5 m
7.5 m
8.5m
ANSWER : : 7.5 m
102.If ‘A’ is the angle formed by two gauge faces, the crossing number will be
tan A
cot A
sec A
Arad
ANSWER : s: b
103.For a sleeper density of (n+5), the number of sleepers required for constructing a broad gauge railway track of length 650 m is
975
918
900
880
ANSWER : : 900