railway engineering

Objective Type Questions14.1. Rail section is generally designated

by its(a) total weight (ib) total length(c) weight per metre length(d) area of its cross-section.

14.2. The arrangem ents of rails which permit trains to cross another track and also to divert to the other track, is called(a) diamond crossing(b) diamond crossing with single

slip(c) diamond crossing with double

slip(d) cross over.

14.3. Wing rails are provided (a) near tongue rails(ib) near check rails(c) near stock rails(d) in crossing.

14.4. Minimum gradient in station yards is generally limited to(a) 1 in 1000 (b) 1 in 500(c) 1 in 400 (d) zero.

14.5. A scissors cross over consists of one diamond and(a) one turnout(b) two turnouts(c) three turnouts(d) four turnouts.

14.6. The tread of wheels is provided on outward slope of(a) 1 in 10 (b) 1 in 15(c) 1 in 20 (d) 1 in 25.

14.7. An extra 75 cm ballast width is not provided on outer side on a curve, if its degree is

(a) 6 (b) 5(c) 4 (d) 3.

14.8. On Indian railways, number of crossing is defined as(a) sine of angle of crossing(b) cosine of angle of crossing(c) tangent of angle of crossing(d) cotangent of angle of crossins

14.9. The check rails are placed opposite the crossing so that(a) it is symmetrically placed oppo

site nose of crossing(b) its one-third length is ahead

the nose of crossing(c) its two-third length is ahead

the nose crossing(id) its three-fourth length is aheac

of the nose of crossing.14.10. Check rails are provided on inner

side of inner rails if sharpness of aB.G. curve, is more than (a) 3 (b) 5(c) 6 (d) 8 .

14.11. The grade com pensation of B.G.tracks on Indian Railways, is(a) 0.02% (b) 0.03%(c) 0.04% (d) 0.05% .

14.12. A triangle of railway consists of(a) three turnouts(b) one turnout and two diamonds(c) two turnouts and one split(d) one turnout, one split and one

diamond.14.13. The rail section which is not used

on Indian Broad Gauge tracks, is(a) 35 R (b) 40 R(c) 45 R (d) 55 R.

Railway Engineering 14.21

1.14. In India the rails are manufactured by(a) open hearth process(b) duplex process(c) both (a) and (b)(d) neither (a) nor (b).

14.15. In Indian Railways, the ratio of axle load and weight of rail, is(a) 312 (b) 412(c) 512 (d) 600.

14.16. On In d ian R ailw ays, angle of crossing between gauge faces of Vee is generally calculated by(a) Cole's method(b) Centre line method(c) Isosceles triangle method (id) Both (a) and (b).

14.17. 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.

14.18. Best wood for wooden sleepers is(a) chir (b) deodar(c) shesham (d) teak.

14.19. The type of switch generally used for B.G. and M.G. tracks, is(a) articulated (b) undercut (c) overriding (d) straightcut.

14.20. Straggered rail joints are generally provided(a) on curves (b) on tangents(c) on bridges (d) in tunnels.

14.21. M axim um can t d eficien cy prescribed on Indian Broad Gauge Railways, is(ia) 40 mm (b) 50 mm(c) 75 mm (d) 100 mm.

14.22. Heel of crossing is the line joining(a) ends of splice rail and point rail(b) ends of lead rails butting the

crossing(c) ends of zing rails(d) th roat and actu al nose of

crossing.

14.23. Rail tops of a track are placed(a) at an inward slope of 1 in 20(b) at an outward slope of 1 in 20(c) at an inward slope of 1 in 30(d) at an outward slope of 1 in 30.

14.24. The g rad ien t on w h ich an additional engine is required to negotiate the gradient is called(a) momentum gradient(b) pusher gradient(c) ruling gradient(d) sleep gradient.

14.25. The lengths of the standard crossing in Indian Railways for Broad gauge and Metre gauge tracks is same for(a) 1 in 8% B.G. and 1 in 12 M.G.(b) 1 in 12 B.G. and 1 in 16 M.G.(c) 1 in 12 B.G. and 1 in 8V4 M.G.(id) 1 in 16 B.G. and 1 in 12 M.G.

14.26. If S and H are stren gth and hardness index of a timber at 12% m oisture content, the com posite sleeper index, is

(a)

(c)

H + 10S 20

20S + H

(b)

(d)

S + 10H 20

S + 20H10 v ' 10

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

GV2 GV2() (*>

(c)

H

GV2(d)

17 R

G2V2127 R v~' 125

14.28. The side of a rail diamond may be obtained by dividing the gauge of track by(a) sine of acute crossing(b) cosine of acute crossing(c) tangent of acute crossing(d) cotangent of acute crossing

14.22 Civil Engineering (Objective Type)

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

(a )s = w + 2d (b) s = 3d + w

(c) s - 4rf + w (d) s = sd + w.14.30. If n is length of a rail in metres, the

number of sleepers per rail length generally varies from{a) n to (n + 2)(b) (n + 2) to (n + 4)(c) (n + 3) to (n + 6)(d) (n + 4) to (n + 5).

14.31. The spread between the point andsplice rails at a distance of 4.25 m is 50 cm. The size of the crossing is (a) 1 in 6 (b) 1 in 8%(c) 1 in 12 (d) 1 in 16.

14.32. A rrangem ent m ade to divert the trains from one track to another is known as(a) railway point (ib) railway crossing(c) turnout(d) railway junction.

14.33. A ccording to Railw ay Board, no diamond crossing should be flatter than(a) 1 in 6 (b) 1 in 8V2(c) 1 in 12 (d) 1 in 16.

14.34. If the stock rails are B.H. rails, the type of switch generally provided is(a) articulated (b) undercut(c) overriding (d) straight cut.

14.35. In railw ays a triangle is m ainly provided for(a) diverting trains from the main

line to branch line(b) crossing over between parallel

tracks(c) changing direction of engines

through 180.(d) shunting wagons in yards

14.36. The overall length of a turnout is the distance between the end of stock rail and(a) heel of crossing(b) actual nose of crossing(c) throat of choosing (1d) toe of crossing.

14.37. Pick up the in co rrect statem en from the following. Required tilt 1 in 20 is provided(a) to the tops of rails(b) at rail seats in bearing plates(c) all rail seats in chairs(d) all rail seats in metal sleepers.

14.38. W heels of a ro llin g stock are provided flanges on(a) outer side (b) inner side(c) both sides (d) neither side.

14.39. C.T.C. stands for(a) Critical track control(b) Critical traffic channeliser(c) Central track control(d) Centralised traffic control.

14.40. The phenomenon on misalignme of rails due to temperature change? is known as(a) Hogging (b) Creeping(c) Buckling (d) Bulging.

14.41. In a diamond crossing, the numberof noses is(a) 2 (b) 3(c) 4 (d) 6 .

14.42. A station having lines in 4 directions is called a(a) Crossing station(b) Flag station(c) Junction station (1d) Diamond junction.

14.43. Any movement of the locomotive in d ifferen t p lan es, e.g., vertical lo n g itu d in a l, tran sverse etc ., is known as(a) Hunting motion


14.46

14.47

(b) Oscillating motion(c) Rolling motion(,d) Shuttling motion.

14.44. The v ertica l com p onen t of the centrifugal forces due to balance weight is called(a) Thrust(b) Hammer blow(c) Dynamic force(d) Balancing force.

14.45. Sand is used as ballast in case of(a) Wooden sleepers(b) Cast iron sleepers(c) Steel sleepers(d) Reinforced concrete sleepers.The m aximum cant deficiency on metre gauge track is(a) 3.1 cm (b) 5.1 cm(c) 6.6 cm (d) 7.6 cm.

To reduce the intensity of pressure p articu larly of so ft v arie ty of sleep ers, a rectan g u lar p late is introduced betw een the rails and the sleepers. This plate is known as(a) Bearing plate(b) Saddle plate(c) Fish plate {d) Gang plate.

14.48. W hich one of the fo llow in g resistance is independent of speed?(a) Track irregularities(b) Frictional resistance(c) R esistan ce due to sw aying ,

oscillations, etc.(d) R esistan ce due to v ertica l

movement of wheels on rails.-.49 . Which type of crossing requires two

cross overs between two tracks?(a) Level crossing(b) Diamond crossing(c) Scissors crossing(d) None of the above.

14.50. The yards in w hich w agons are

stored and new trains are formed are called(a) Goods yards(b) Marshalling yards(c) Junction yards(d) Station yards.

14.51. Usually, the dead end of a siding or an end of any track of term inal stations is not kept bare but a form of stop or barrier is provided at the end of the track to p revent the vehicles from running off the track. Such a stop is known as(a) Dead stop (b) End stop(c) Buffer stop (d) Terminal stop.

14.52. W hich o f the fo llo w in g causes maximum damage to the track ?(a) Fast m oving but light weight

vehicles(b) Slow moving but heavy trains(c) Accelerating train(d) H eavy axle load u nevenly

distributed.14.53. The force which resists the forward

m ovem ent and speed of train is called(a) Friction(b) Tractive resistance(c) Hauling resistance(d) Track modulus.

14.54. In rainy season the dust in the ballast becomes mud and comes up by suction from below the rail joint. Such joint is called(a) Blowing joint(b) Mud joint(c) W ater joint(d) Pumping joint.

14.55. In case of broad gauge lines the maximum value of cant deficiency is(a) 150 mm (b) 100 mm(c) 50 mm (d) 40 mm.

14.56. The maximum rising gradient which is provided keeping the power of locomotive in view, is called


(a) Momentum gradient(b) Down gradient(c) Pusher gradient(d) Ruling gradient.

14.57. A signal of sm aller size than the ordinary stop signal which is placed below the stop signal on the same post so as to be visible to approaching driver when the stop signal is hidden by an obstacle, is known as(a) Warner signal(b) Co-acting signal(c) Caution signal(d) Shutting signal.

14.58. In which condition of rail surface, the coefficient of friction will be the least ?(a) Very wet(b) Very dry(c) Greasy(d) Average dampness.

14.59. The movable end of the tapered rail,by m eans of w h ich the flange wheels of the train are diverted from one track to another, is known as (a) Stud (b) Heel(c) Toe (d) Flare.

14.60. The sinuous path taken by an engine as against the alignment of the track is known as(a) Rolling motion (,b) Nosing motion(c) Hunting motion(d) Shuttling motion.

14.61. The rails of a track are placed(a) At an inward slope of 1 in 10(.b) At an inward slope of 1 in 15(c) At an inward slope of 1 in 20(d) At an inward slope of 1 in 25.

14.62. If V is the speed of train in km/hour and R is the radius of curve in metres, than the equilibrium super elevation for broad gauge, is

V2(a) e = 0.60 (b)e = 0.80 w R w R

, V V2(c) e = 0.95 (d) e = 1.35 .

14.63. When R is the radius of simple curve in metres, the length of transition curve is given by

(a) 1.75-v/R (b) 4.4VR

(c) 8.9VR (d) 12.12VR.14.64. The rectan g u lar p its in w hich

wheels of the locomotives are tak out for repairs, are known as(a) Siding pits(b) Inspection pits(c) Drop pits(d) Ash pits.

14.65. The gradient which requires one c: m ore ad d ition al locom otive hauling the load over the gra is called(a) Up-gradient(b) Sleep gradient(c) Pusher gradient(d) Momentum gradient.

14.66. The capacity of a railway(a) the m aximum load that

take(b) the maximum deflection

the given load(c) the maximum compressiv<

that the railway can wit(d) the hourly capacity of the :

to handle the trains safetv.: num ber of trains that C; safely run on a track per

14.67. The bed plates fixed betweenstock rail and tongue rail to pr the lateral bending of the tc rail, are known as(a) Studs (b) Flares(c) Heels {d) Toes.


The semaphore signals located in such positions from where trains start for their next destination, are known as U i Warner signals (r i Starter signals i) Repeater signals

( i ) Router signals.tify the incorrect statement

12 1 Shpping of wheels bums the top of the rail

b ) Slipping produces flat spots on the wheel treads

c * Slipping occurs due to overload S lip p in g occu rs due to bad application of brakes.

Match the following :Column I

(Colour painted on signal lever)

A. YellowB. Green C Blue D Red

Column II(Purpose)

1. Lever for warner2. Levers for locks3. Crossing gate4. Levers for stop

A B C D1 2 3 42 3 4 13 1 2 44 1 2 3.

The sleepers areI. Wooden sleepers

II. Steel sleepersIH. Cast iron sleepers IV- Concrete sleepers.The sleepers in order of increasingweight areIj i I, II, III and IV(*) I, III, IV and II(c) 0 , I, III and IV\d) IV, I, II and III.Fuel storage cham ber of a Locomotive is called I ) boiler (b) tender

(c) fire box (d) grate.14.73. Coning of w heels is done with a

taper of about(a) 1 in 100 (b) 1 in 60(c) 1 in 40 (d) 1 in 20.

14.74. The m axim um can t d eficien cy allowed in India in B.G. is(a) 38 mms (b) 51 mms(c) 62 mms (d) 76 mms.

14.75. Point is a group of(a) Switches (b) Stretcher bars (c) Stock rails (d) Tongue rails.

14.76. The broad gauge B.G., metre gauge M.G. and narrow gauge N.G. meet at the station of(a) Indore(b) Vijayawada(c) Bangalore city(d) Rampur.

14.77. Rails are made of (a) Mn-alloy steel Ib) W-alloy steel(c) H.C.S.(d) Alnico.

14.78. The ratio of maximum Cant e and gauge G in India is about(a) 1/100 (b) 1/50(c) 1/10 (d) 1/25.

14.79. The tool used for taking out the dogspikes from sleepers is(a) Cant board (b) Jun crow(c) Claw bar (d) Lighting jack.

14.80. Isolation and distribution of goods wagons is done at(a) Goods yard(b) Skids(c) Marshalling yard(d) None of the above.

14.81. The value by which actual cant falls short of equilibrium cant is knownas(a) Cant deficiency(b) Cant


(c) Offset(d) Shift.

14.82. When A is exposed area in m2 andV the wind velocity in kmph, the approxim ate w ind resistan ce is given by(a) 0.017 AV2 (1b) 0.0017 AV2(c) 0.00017 AV2(d) 0.000017 AV2.

14.83. Which of the following terms are not related to rail failure?(a) Transverse fissure(b) Split head(c) Bending(d) Horizontal fissure.

14.84. The bending of rails is done by(a) Jun crow (b) Beater(c) Pickaxe (d) Sledge hammer.

14.85. Which of the following is not used for preliminary survey(a) Stroboscope(b) Plane table(c) Dumpy level(d) Theodolite.

14.86. A metre gauge rail track is to be laidfor 10 km s len g th . The sleep er density is (n + 4). The quantity of rails needed for the purpose will be(a) 845 (b) 3380(c) 2535 (d) 1690.

Note : Using the information given for problem 14.86, reply problems 14.87 to 14.90.

14.87. The nu m ber o f b earin g p lates needed will be(a) 3,380 (b) 6,760(c) 26,860 (d) 13,430.

14.88. The required number of fish-plates will be(a) 3,380 (b) 13,430(c) 6,760 (d) 26,860.

14.89. Number of sleepers needed will be(a) 26,860 (b) 13,430(c) 6,760 (d) 3,380.

14.90. The chart used for recording conditions of track is known as(a) Dynamometer chart(b) Vibro-chart(c) Hallade chart(d) Rolling chart.

14.91. 'Crossing clearance' is the dist between crossing rail and (a) check rail (b) wing rail (c) tongue rail (d) point.

14.92. Vignoles rails are also known as(a) bull headed(b) double headed(c) flat footed rails(d) rack rail.

14.93. Form of transition curve comm adopted on Indian Railway is(a) Fraud's cubic parabola(b) Euler's spiral(c) Both of the above(d) Catenary.

14.94. Total num ber of zones in whiIndian Railways is distributed administrative purposes(a) 5 (b) 7(c) 11 (d) 9.

14.95. The m axim um allow able supe.elevation on B.G. in India is(a) 76 mms (b) 102 mms(c) 124 mms j (d) 165 mms.

14.96. The gap moved by two tongue r is known as(a) toe of switch(b) lead(c) throw of switch (.d) heel of switch.

14.97. TACV (Track Air Cushion Vehisuspended on cushion of air has in the shape of(a) dovetail (b) inverted T(c) V (d) Flats.

14.98. The ratio of wheel diameter D gauge width B is about

f

' i n g rvkTl 45


dl5tTi_-

- f J t rHlSr

Llfll

- : : 4

106.

(a) 0 .40 (b) 0.55(c) 0.75 (d) 0.90.

VSrhen angle of switch is 1.42, the heel d ivergence is 120 m m, the length of tongue rail will be (rt) 7.26 m (b) 2.42(c) 9.68 m (d) 4.84.

R ising g rad ien t fo llow ed by a following gradient is known as(a) ruling gradient(b) momentum gradient(c) pusher gradient id) angular gradient.The type of ra il crossin g leastpreferred is{a) diamond crossing(b) square crossing(c) acute crossing(d) double crossing.Goliath is the name of a {a) weigh-bridge(b) crane(c) water-colum n(d) engine shed.The train 'P lace on W heels' run between(a) Delhi and Agra via Rajasthan (t1) Delhi and Amritsar(c) Jaipur and Agra(d) Jaipur and Gwalior.On B.G. in India maximum allowedcrossing number is(a) 1 in 6 (b) 16(c) 6 (d) 1 in 16.

The primary function of ballast is to(a) maintain the gauge(b) provide elasticity(c) prevent growth of vegetation(d) to reduce creep.Which of the following is a part of a switch in a railway track?(a) Lead rail (b) Splice rail(c) Heel block (d) Wing rail.

14.107. Which sleeper will absorb the rolling vibration most?(a) W ooden (b) C&st iron(c) Steel (d) Concrete.

14.108. M etal sleep ers are su p erior to wooden sleepers with respect to(a) cost(b) life(c) track circuiting(d) fastening.

14.109. Carbon content of rail steel is (a) 0.055 to 0.068 per cent {b) 0.155 to 0.168 per cent(c) 0.55 to 0.68 per cent(d) 1.55 to 1.68 per cent.

14.110. A monoblock sleeper has(a) square section(b) rectangular section(c) trapezoidal section(id) semi-circular section.

14.111. In a hump type marshalling yard the steepest falling gradient is(a) 1 in 500 (b) 1 in 250(c) 1 in 125 (d) 1 in 50.

14.112. Switch is(ia) a tongue rail(b) a stock rail(c) combination of both tongue and

stock rail(d) tongue and stock rail

com bination but separated by flange way.

14.113. A hump yard is a type of(a) passenger.yard(b) marshalling yard(c) retarder(d) goods yard.

14.114. W hich one of the follow ing rail failure is caused by loose fish bolts at expansion joints?(a) Crushed head(b) Angular break(c) Split head(d) Transverse fissures.

14.115. A rail section is generally specified by(a) cross-sectional area (.b) moment of inertia(c) weight per metre(d) contours of cross-section.

14.116. Pandrol is(a) a rolling bar(b) a method of elastic fastening(c) rag bolt(d) rail crack detecting device.

14.117. Which of the following is a part of switch in the railway track?(n) Lead rail (b) Splice rail(c) Hing block (d) Wing rail.

14.118. The switch provided near the dead end of siding, w hich derails the vehicle, is called(a) trap switch(b) scotch block(c) roundhouse(d) bufferstop.

14.119. Which of the following statement about bridge sleepers is false?{a) They are th icker than the

standard sleepers(b) They are provided with bearing

plates*(c) They are invariably adazed(d) They are th ick er than the

standard sleepers.14.120. Maximum permissible gradient for

a station yard is(a) 1 in 1000 (b) 1 in 400(c) 1 in 500 (d) 1 in 300.

14.121. Wear of a rail is maximum in(a) tangent track(ib) sharp curve(c)* tunnels(d) coastal area.

14.122. Cant excess causes(a) discomfort to riders(b) more wear for rolling stock


(c) greater lateral stress(d) more pressure on the inner r

14.123. W hen a pair of track converges provision is made of(a) absolute block system(b) fouling mark(c) automatic signal(d) routing signal.

14.124. Steel truss bridges for railway trac are generally suitable for a simp1 span of(a) less than 50 m(b) 100 m to 200 m(c) 200 m to 500 m(d) any length.

14.125. Approximate permissible speed km ph on a cro ssin g can calculated from the crossing number N, as(a) 1.2 N (fe) 2.4 N(c) 3.6 N (d) 4.8 N.

14.126. The resistance to the movement trains is due to (/z) speed of the train(b) gradient and curve(c) friction and wave action(d) all of the above.

14.127. Rails are bent to correct curvatureif the degree of curve is more than(a) 5 (b) 2(c) 3 (d) 4.

14.128. An engine may be shifted from one track to a parallel track in restricted space by(a) triangle (b) cross over(c) turn buckle (d) traverser.

14.129. Adzing of wooden sleepers is doneto provide a cant of(a) 1 in 40 (b) 1 in 30(c) 1 in 25 (d) 1 in 20.

14.130. The treadle bar is provided(a) in the middle of the track a little

in front of toes of the tongue rail

Fm er ra_ ^verges

avtrack.- i siinr-tf

=peed x can benumber

m eat rr

n on-

-


(b) near and parallel to inner side of one of the rails

(c) at right angle to the rail(d) near and parallel to inner side

of both the rails.B 131 . An excess percentage of carbon in

steel, makes the rail(a) tougher(b) resistant to wear(c) resistant to vertical deformation(d) brittle.

L152. Disc signals are provided for the purpose of(a) shunting(b) dead slow movement(c) indicating busy platform(d) a possible danger ahead.

J3 3 . D uring n arro w in g dow n of adouble track for a short distance, the arrangement adopted is of(a) Gauntlet track(b) Herring bone grid(c) Double junction track(d) Tandem turnout.

L134. The longitudinal movement of the rails in a track technically known as(a) buckling(b) hogging(c) creeping(d) none of the above.

5. The sup er e lev a tio n 'e' to beprovided on rails is determined by

(a) e =GV

(c)e GV3

(b)e =

(d)e =

GV2

g *

GV2

' ' 8 ^ 1-4 I While aligning a hill road with a

rulling gradient of 6%, a horizontal curve of rad iu s 75 m etres is en cou n tered . The com pensated gradient of the curve will be (,7)1.4% (b) 5%(c) 1 .0% (d ) 7 % .

14.137. Flange way clearence is the distance(a) between the adjoining faces of

the running rail and the check rail near the crossing

(b) between the gauge faces of the stock rail and the tongue rail

(c) through which the tongue rail moves latterly at the toe of the switch

(d) b etw een ou ter faces of the running rail.

14.138. Consider the following operations1. Earth work2. Plate laying3. Ballasting.

The correct sequence of activities constituting the track construction is (a) 1, 2 and 3 (b) 2, 3 and 1(c) 3, 1 and 2 (d) 1, 3 and 2.

14.139. W hich one of the fo llow in g statement is correct with regard to the radius of curvature of an ideal transition curve?(a) It is inversely proportional to the

main circular curve(b) It is inversely proportional to its

distance front point of tangency(c) It is constant throughout the

length of the curve(d) It is directly proportional to the

lo n g itu d in a l sectio n of the curved portion of the road.

14.140. Rails are titled inwards while fixing on the sleep ers. C onsid er the following statements about this :

1. Wear and tear of rails is reduced2. Internal bending stresses are

reduced3. Corrugation in rails is reduced4. Gauge is maintained.

Out of these statements(a) 1 and 2 are correct(b) 1 and 3 are correct

I'iA -

,


(c) 1 and 4 are correct(d) all are correct.

14.141. The organisations which provide consultancy services on all aspects of ra ilw ay s from con cep t to completion, in India is(a) AREA (b) IRCON(c) RITES (d) CRRI.

14.142. A duplicate signal provided at a lower level on the same post of a single near a bridge is called(a) co-acting signal(b) repeating signal(c) calling-on signal(d) none of the above.

14.143. In a ra ilw ay track , the vertica l pressure will be almost uniform at a depth equal to x times the centre to centre spacing of sleepers. The value of x will be(a) 1.0 (b) 2 .0(c) 3.0 (d) 0.5.

14.144. For lay in g the ra ilw ay track , materials required areA. Rails B. Fish PlatesC. Fish bolts D. Bearing plates.

The quantities required for one km of B.G. track will be

A B C D(a) 154 308 308 154(b) 154 308 616 154(c) 77 154 308 77(d) 168 336 672 168.

14.145. Which of the following mechanical device(s) is/are used to ensure that route cannot be changed while the train is on the point even after putting back the signal?(a) Lock bar (b) Point lock(c) Detectors (d) Stretcher bar.

14.146. On * In d ian R ailw ays, the approximate weight of a rail section is determined from the formula

(a)

(b)

(c)

(d)

weight of the rail 1axial load of locomotive 110

weight of the rail _ 1axial load of locomotive 410



c r itica l h e ig h t of ai14.147. Theu nsu p p orted v e rtica l cut in cohesive soil is given for a railwav track as

() tan(45+/2)Y

() tan (45+ /2)

(c) tan (4 5 - /2)Y

{ d ) j ta n (4 5 -*/ 2 ).

where c = cohesion andy = unit height of soil

14.148. C harles Vignolo inverted which type of rail section, that is still being used?(a) Double Headed Rail (DHR)(b) Bull Headed Rail (BHR)(c) Flat Footed Rail (FFR)(d) Rectangular section.

14.149. Pick out the incorrect statement(a) For railway tracks, total curve

resistan ce and gradient resistance should not exceed the resistance due to perm issible ruling gradient

(b) A 4-6-2 locomotive indicates 4 front wheels, 6 central wheels and 2 rear wheels

(c) The gauge of railway track is the clear m inim um perpendicular


d istan ce b etw een centre to centre distance of rails

(d) The tractive effort of an engine balances the air resistance, static friction and the pull on draw bar.

Consider the following statements1. The tongue rail is connected with

the stock rail at the toe of switch2. The distance between the main

and the checks rails is called buffer

3. Interlocking improves safety of train movement

Of these, the correct statements are (a) 1 only (b) 2 and 3(c) 1 and 3 (d) 3 only.

14 151. Which one of the following relates to the P ercu ssio n theory for explaining the causes of creep?(a) Pushing the rails forward and

backward during starting and slowing

(b) Import of wheels at the rail end ahead at joints

(c) Pushing the rail of the track due to the thrust on driving wheels

(d) Form ation of vertical reverse curves beh ind and ahead of wheels.

14 152. W hich one of the fo llow in g in correctly represents the function of sleepers in the layout of rail tracks?(a) Sleepers hold the rails at proper

gauge on straight tracks(b) Sleepers transfer the load of

moving train to ballast(c) sleep ers act as a n on-elastic

m edium b etw een ra ils and ballast

(d) S leep ers hold rails at p respecified tilt along the track.

14.153. In the design of railway if a is the

switch angle and R-the radius of a curve at a turnout, w hich of the follow ing expression would give correctly, the length of the tongue rail?(a) R sin a (b) R sin a/2(c) R tan a (d) R tan a/2.

14.154. Adzing of wooden sleepers is done to provide a cant of(a) 1 in 40 (b) 1 in 30(c) 1 in 25 (d) 1 in 20.

14.155. Match List I with List II and select the correct answ er by using the codes given below the list :

List I List II(Length o f transi- (Condition)

tion curve)A. L = 72 e 1. Arbitrary gradient

in 720B. L = 0.036 e x Vmax 2. Rate of change of

super elevation

C. L = 4.4VR 3. Radialacceleration of 0.3048 m/s2

v3D. L = 3.28 4. Railway code

w here e = actu al cant of super elevation in cm; Vmax = maximum speed in kmph; R = radius of curve in metres, and v = 0.278 V where v is in mps.

Codes :A B C D

(a) 1 2 3 4(b) 4 3 2 1(c) 1 3 2 4(d) 1 2 4 3

14.156. Consider the following factors in the movement of a train

1 . gauge 2 . gradient3. curve 4. speed.

The resistance in the movement ofthe train is due to(a) 1, 2 3 (b) 1, 2, 4


14.165

14.166.

14.167.

(c) 1, 3, 4 (d) 2, 3, 4.14.157. W hen sem ap h ore and w arnar

signals are installed on the same 14.164. post, than the stop indication isgiven when(a) semaphore arm is lowered but

warner arm is horizontal(b) both sem aphore and w arner

arms are lowered(c) both arms are horizontal(d) none of the above

14.158. Sleeper density (M + 7) means(a) number of sleepers required per

km length is 1007.(b) number of sleepers between any

two station = distance in km +7

(c) num ber of s leep ers per rail length = length of rail in metres + 7

(d) spacing of sleepers = 107 cm c/c.14.159. The pit where wheels of locomotive

can be removed is called(a) ash pit(b) drop pit(c) examination pit(d) loco shed.

14.160. The width of top portion of a flat footed rail, is(a) 66.67 mm (b) 69.80 mm(c) 73.25 mm (d) 75.87 mm.

14.161. In coning of wheels, the wheels aregiven a slope of(a) 1 in 20 (b) 1 in 25(c) 1 in 30 (d) 1 in 40

14.162. To hold the adjoining ends of rails in correct horizontal and vertical planes, the rail fastenings used are(a) fish plates (b) spikes(c) anchors (d) bearing plates.

14.163. Stock rails are fitted(a) near tongue rails(b) near check rails

14.168.

14.169.

14.170.

14.171.

14.172.

(c) against tongue rails(d) against check rails.The rail seat is given a slope of (a) 1 in 10 (b) 1 in 20(c) 1 in 30 (d) 1 in 40.

For broad gauge track, in Ind' Railways the standard length of is(a) 10.06 m (b) 10.97 m(c) 11.89 m (d) 12.8 m.

For m etre gauge track, in Ind' Railways the standard length of is(a) 10.06 mm (b) 10.97 mm(c) 11.89 mm (d) 12.8 mm.

Sleepers wrhich satisfy all of requirements and are only suitab for track circuiting are(a) wooden sleepers(b) steel sleepers(c) cast iron sleepers {d) R.C.C. sleepers.The size of ballast used on Ind; - railways for wooden sleepers is (a) 2.5 cm (b) 3.8 cm(c) 4.3 cm (d) 5 cm.

Creeping of rails can be checked using(a) chairs (b) bearing plates(c) anchors (d) spikes.

The system of signalling used o single line working is(a) absolute block system(b) space interval system(c) time interval system(d) pilot guard system.No signals are provided in case o(a) ruling gradient(b) momentum gradient(c) pusher gradient(d) station yards gradient.The track from which train diverts is known as(a) turn out


ir> main line(c) crossing track(d) point.On In d ian ra ilw ay s, the grade compensation provided on broad ?auge curves is (a) 0.02 percent per degree m o .03 percent per degree(c) 0.04 percent per degree(d) 0.05 percent per degree.

I~4. The sleepers in the form of twobowls placed under each rail and connected together by a tee-bar, are known as

Vb^ box sleepers (c) plate sleepers

duplex sleepers.~5. The distance between two adjoining

axles fixed in a rigid frame is known as(a) gauge(b) wheel base distance(c) creep(d) both (a) and (b).

JL~6. In India, for broad gauge track, themaximum height of a loaded goods wagon is fixed as (ii) 3.40 m (b) 4.72 m(c) 5.32 m (d) 5.87 m.

JET". A warner signal, which is first seenbv the driver is known as(d) disc signal (b) home signal :'c) outer signal (d) routing signal.

In In d ia , the ru lin g gradient provided in p la in s for one locomotive tram, is(a) 1 in 150 to 1 in 200(b) 1 in 200 to 1 in 250(c) \ in 250 to 1 in 300(d) 1 in 300 to 1 in 350.

179. Adzing is done in the sleepers togive a slope of

(a) 1 in 10 (b) 1 in 20(c) 1 in 30 (d) 1 in 40.

14.180. Fish bolts are made of(a) cast iron(b) low carbon steel(c) high carbon steel(d) stainless steel.

14.181. The m inim um com posite sleeper index for wooden sleepers used over cross-overs is{a) 1352 (b) 1455(c) 1555 (d) 1652.

14.182. The m inim um com posite sleeper index for wooden sleepers used over bridge girders, is

VaN, Y i5T ^ 1455^ 1 5 5 5 V ^ W I .

14.183. A track is \ai& o^et(a) sleepers (b) formation (c) rails (d)\'>a\\as't.

14.184. The relation between the radius of curve (R) and its degree of curvature (D) is given by

(a) R = 1245 1546.8

(c) R =D1746.5

(b) R =

(d) R =

D1835.6

D D14.185. In case the block system fails, then

the system used is(a) space interval system(b) time interval system(c) pilot guard system(d) any one of the above.

14.186. Which of the following statement iscorrect ?(a) At every change of gauge, the

passengers have to change their train

(b) The timings of trains at gauge- chan ge p o in ts should not coincide

(c) During w ar tim es, change in gauge is convenient to the army for quick movement

(d) If the intensity of-traffic becomes more, it requires smaller gauge.

14.187. Between two rails, a gap provided for free expansion of the rails due to rise in temperature is(a) 15 to 3 mm(b) 3 mm to 6 mm(c) 6 mm to 9 mm(d) 9 mm to 12 mm.

14.188. To prevent the change in gauge and creep, the steel sleepers are fixed by clips, bolts and(a) one key (b) two keys(c) three keys (d) four keys.

14.189. The total effective area of the pot sleepers is(a) 0.26 m2 (b) 0.36 m2(c) 0.46 m2 (d) 0.56 m2.

14.190. The versine (h) for the curve is givenby(a) h = l2/ r (b) h = I2H r(c) h = l2/\r (d) h = I2/Sr.

where, I = length of rail on curve portion, and r = radius of curve.

14.191. The q u an tity of ston e b a llast required per metre tangent length for broad gauge is(a) 0.767 m 3 (b) 1.11 m3(c) 1.51 m3 (d) 2.11 m3.

14.192. On In d ian ra ilw ay s, the grade com pensation provided on metre gauge curves is(a) 0.02 percent per degree(b) 0.03 percent per degree(c) 0.04 percent per degree(d) 0.05 percent per degree.

14.193. A curve is represented by the degree of the curvature subtended by a chord of(a) 15 m (b) 20.8 m(c) 30.48 m (d) 40.8 m.

14.194. A track assembly used for diverting train from one track to another is known as(a) trun-out


(b) crossings(c) junction(d) none of the above.

14.195. A three-throw requires(a) two sets of sw itches and

crossings(b) three sets of switches and

crossings(c) two sets of switches and

crossings(d) three sets of switches and ti

crossings.14.196. When train passes on curves whi

have no super-elevation, it will gi thrust on the(a) inner rail(b) outer rail(c) inner side of inner rail(d) inner side of outer rail.

14.197. The overall depth of a dog spike is (a) 12.06 cm (b) 15.95 cm(c) 17.59 cm (d) 18.06 cm

14.198. The type of turn-out in which bo the turn-out rails are movable is known as(a) W harton safety switches(b) split switches(c) stub switches(d) none of the above.

14.199. Which of the following statement is wrong?(a) The coning of wheels is provided

for smooth running of trains(b) The coning of wheel prevents the

wear of the inner faces of rails(c) If the axle m oves laterally

towards one rail, the diameter of wheel rim increases on that rail

(d) On curves, the outer wheel has to travel lesser distance than the inner wheel.

14.200. Plate sleeper consists of a plate of dimensions(a) 454 mm x 254 mm


r) 551 mm x 254 mm .'I 851 mm x 254 mmd) 951 mm x 254 mm.

In order to counteract the increased Lateral thrust on curves, an extra shoulder provided on the outside of curves isU) 5 cm (b) 10 cm

rot \jxAs>, \yA\2c?v ^ %have recommended a gradient of t j) 1 in 100 (b) 1 in 200(c) 1 in 500 (d) 1 in 1000.

(c) inward slope of 1 in 30(d) outward slope of 1 in 30.

14.208. Gibb and cotters for connecting potsleep ers are so casted th at by in terch an g in g them gauge is slackened by(a) 3.18 mm (b) 6.18 mm(c) 8.81 mm (d) 13.8 mm.

sys, Tcocnfceret ^sv\*A\s> \o tora\ee\ one paw of fish plates to the rails are(a) two (b) four(c) six (d) eight.

According to railway code formula, 14.210. The m inim um len g th of thethe length of transition curve is equal to

2\ 1.4VR (b) 2.4VR

(ci 3.4vR (d) 4 .4V R .where, R = Radius of simple curve metres.The gradient where extra engine is required to push the train is known as

j > ruling gradient r momentum gradient c pusher gradient i station yards gradient.

Tr-je station where lines from three or more directions meet is called j .} crossing station 1* flag station - ;unction station

terminal station.At the tim e of co n stru ctio n of railw ay in In d ia , after long controversy, the gauge adopted as2 standard gauge was U 1.435 m (b) 1.524 mhn 1.676 m (d) 1.843 m.

T : reduce the wearing of rails, the are placed at an!) inward slope of 1 in 20

t ?utvvard slope of 1 in 20

transition curve is equal toSV SV

(*) ToT (b)

(c)

121SV175

153 SV

w here, S = Superelevation in mm, and

V = Maximum permissible speed in km/hr.

14.211. The sw itch ang le is the angle subtended between the gauge faces of the{a) tongue rail and check rail(b) stock rail and check rail(c) stock rail and tongue rail (,d) none of the above.

14.212. Minimum packing space provided between two sleepers is(a) 25 to 30 cm(b) 30 to 35 cm(c) 35 to 40 cm(d) 40 to 45 cm.

14.213. For a new embankments in black cotton soil, the m aterial used as blanket is(a) sand (b) moorum(c) coal ash (d) broken stone.

14.214. The maximum gradient in which a ra ilw ay track m ay be laid ir. a


particular section is known as(a) pusher gradient(b) ruling gradient(c) momentum gradient(d) all of the above.

14.215. The device provided to prevent the vehicles from moving beyond the end of rails at terminals is called (a) turn-tables (b) buffer stops(c) triangles (d) scotch blocks.

14.216. Which of the following statement is correct ?(a) Bearing plates are used in the

case of hard sleepers(b) Chairs are used for flat-footed

rails instead of bearing plates(c) Spacing of sleepers near the rail

joint is closer(d) Sp acin g of sleep ers in the

middle of the rail is closer.14.217. Which of the following statement is

correct ?(a) The coal ash is used in the initial

stages if new construction of steel sleepers are used

(b) The broken stone has very poor interlocking action

(c) The gravel ballast has very poor drainage property

(d) The sand ballast causes wear of rail-seats and keys.

14.218. The sup er e lev a tio n (S) to be provided on rails is determined by

V2G(a) S =

(c) S =

VG

v 3g

(b) s =

(d) S:

8R

v 4g

f * ' ' SRwhere V = Speed of train

G = GaugeR = Radius of curve, and g = Acceleration due to

gravity.

14.219. Which of the following statementsis wrong ?(a) The length of gap at crossing

b etw een tw o noses of a diamond crossing increases as the crossing angle decreases

(b) The sand hump is a device to check the movement of a vehicle

(c) The next signal after outer signal tow ards sta tio n is a routing signal

(d) A stop signal placed at the end of a platform is called a starter signal.

14.220. The maximum permissible speed (of trains for good order track or.transition curves is given by

(a) V -1 4 -V R -7 0

(b) V = 2 .4 V R -7 0

(c) V = 3 .4 V R -7 0

(d) V = 4 .4 V R -7 0 . w here, R = R ad iu s of curve u metres.

14.221. Which of the following statement is correct ?(a) The tongue rail should be longer

than the stock rail(b) The ton gu e ra il should be

smaller than rigid wheel base of the vehicle

(c) Track spacing is the distance betw een the running edge of stock and sw itch rails at the switch heel

(d) Facing points are such places in the track where trains first pass over sw itch es and the over crossings.

14.222. M atch the co rrect answ er from Group B for the statements given in group A

14.15. tc 14-22. ( l O .

1-436. U) 14-43. r

L4 ~L

* V

Group A Group B

1 in 100 to 1 in 150

The grade A.compensation provided on broad gauge curves isThe ruling B. 1 in 1000gradient provided in hilly tracks is The gradient C. recommended for station yards isThe grade D. compensation on narrow gauge curves is

IDDAA

0.02percent/degree

0.04percent/degree

14.223. M atch the co rrect answ er from Group B for the statements given in Group A.

Group A Group B

I. Distance between A. gaugetwo adjoining axles is called

n. Clear horizontal B. rail weardistance between inner faces of rails near tops is called

IH Longitudinal move- C. wheel base ment of rails in a distance track is called

IV. Flow of rail metal D. rail creepdue to abnormally heavy loads is called

Codes :


II III IV I II III IVB A C (a) A B C DA B c (b) B D C AB C D (c) C A B DD B C. id) C A D B

ANSW ERS

H . 1 (c) 14.2. (c) 14.3. (d) 14.4. (d) 14.5. (d) 14.6. (c) 14.7. (d)jL ^ (d) 14.9. (c) 14.10. (d) 14.11. (c) 14.12. (c) 14.13. (b) 14.14. (c)

M. 15. (c) 14.16, () 14.17. (c) 14.18. (d) 14.19. (c) 14.20 (a) 14.21. (d)(a) 14.23. (a) 14.24. (b) 14.25. (a) 14.26. (b) 14.27 (c) 14.28. (a)

a (a) 14.30. (c) 14.31. (b) 14.32. (c) 14.33. (b) 14.34. (d) 14.35. (c)M .56. () 14.37. (a) 14.38. (b) 1 4 .3 9 .(d) 14.40. (c) 14.41. (d) 14.42. (d)-4 4_?. (b) 14.44. (b) 14.45. (b) 14.46. (c) 14.47. (a) 14.48. (b) 14.49. (c)M. 50. 00 14.51. (c) 14.52. (d) 14.53. (b) 14.54. (d) 14.55. (b) 14.56. (d)

- (b) 14.58. (c) 14.59. (c) 14.60. (b) 14.61. (c) 14.62. (d) 14.63. (b)14. *4. (c) 14.65. (c) 14.66. (d) 14.67. (a) 14.68. (b) 14.69. (b) 14.70. (c)M. 71. () 14.72. (b) 14.73. (d) 1 4 .7 4 .(d) 14.75. (a) 14.76. (c) 14.77. (a)1-4 "S. (c) 14.79. (c) 14.80. (c) 14.81. (a) 14.82. (d) 14.83. (c) 14.84. (a)U. ?5. () 14.86. (d) 14.87. (c) 14.88. (a) 14.89. (b) 14.90. (c) 14.91. \b) i *2_ (C) 14.93. (a) 14.94. (d) 14.95. (d) 14.96. (c) 14.97. (b) 14.98. (ct


14.99. (d) 14.100. (b) 14.101. (b) 14.102. (b) 14.103. (a) 14.104. id) 14.105.14.106. (c) 14.107. (a) 14.108. (b) 14.109. (c) 14.110. (c) 14.111. (d) 14.112.14.113. (b) 14.114. (a) 14.115. (c) 14.116. (b) 14.117. (c) 14.118. (ia) 14.119.14.120. (b) 14.121. (b) 14.122. (d) 14.123. (b) 14.124. (a) 14.125. (b) 14.126.14.127. (d) 14.128. (d) 14.129. (d) 14.130. (b) 14.131. (d) 14.132. (a) 14.133.14.134. (c) 14.135. (b) 14.136. (b) 14.137. (a) 14.138. (a) 14.139. (b) 14.140.14.141. (b) 14.142. (a) 14.143. (a) 14.144. (c) 14.145. (a) 14.146. (c) 14.147.

14.148. (c) 14.149. (c) 14.150. (d) 14.151. (a) 14.152. (c) 14.153. (d) 14.154.14.155. (,d) 14.156. (d) 14.157. (c) 14.158. (c) 14.159. (b) 14.160. (a) 14.161.14.162. (a) 14.163. (c) 14.164. (b) 14.165. (c) 14.166. (d) 14.167. (a) 14.168.14.169. (c) 14.170. (b) 14.171. (b) 14.172. (b) 14.173. (c) 14.174. (a) 14.175.14.176. (b) 14.177. (c) 14.178. {a) 14.179. (b) 14.180. (c) 14.181. (a) 14.182.

14.183. (b) 14.184. (c) 14.185. (b) 14.186. (a) 14.187. (a) 14.188. (d) 14.189.14.190. (d) 14.191. (b) 14.192. (b) 14.193. (c) 14.194. (a) 14.195. (c) 14.196.14.197. (a) 14.198. (a) 14.199. (d) 14.200. (c) 14.201. (c) 14.202. (d) 14.203.14.204. (c) 14.205. (c) 14.206. (c) 14.207. (a) 14.208. (a) 14.209. (b) 14.210.14.211. (c) 14.212. (b) 14.213. (b) 14.214. (b) 14.215. (b) 14.216. (d) 14.217.

14.218. (b) 14.219. (c) 14.220. (d) 14.221. (d) 14.222. (b) 14.223. (d)

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railway engineering

Documents

bridges d

d straightcut

curves b

angle of crossing

isa articulated b undercut

weight of rail

number of crossing

heel of crossing