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Quiz 3
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Q.1
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
Q.2
The height of the rail for 52 kg rail section is
143 mm
156 mm
172 mm
129mm
Q.3
Head width of 52 kg rail section is
61.9 mm
66.7 mm
67 mm
72.33 mm
Q.4
Largest percentage of material in the rail is in its
head
web
foot
head and foot both
Q.5
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)
Q.6
Which one of the following rail failures is caused by loose fish bolts at expansion joints?
crushed head
angular break
split head
transverse fissures
Q.7
The side slope of embankments for a railway track is generally taken as
1:1
1.5:1
2:1
1:2
Q.8
Loose jaws of steel trough sleepers are made of
cast steel
mild steel
cast iron
spring steel
Q.9
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)
Q.10
Creep is the
Longitudinal movement of rail
Lateral movement of rail
Vertical movement of rail
Difference in level of two rails
Q.11
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
Q.12
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
Q.13
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)
Q.14
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)
Q.15
The sleepers resting directly on girder are fastened to the top flange of girder by
hook bolts
dog spikes
fang bolts
rail screws
Q.16
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
Q.17
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
Q.18
Yellow lighthand signal indicates
stop
proceed
proceed cautiously
none of the above
Q.19
Consider the following statements about concrete sleepers.
1. They improve the track modulus.
2. They have good scrap value.
3. They render transportation easy.
4. 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
Q.20
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
I and 2 are correct
3 and 4 are correct
1 and 4 are correct
2 and 3 are correct
Q.21
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
Q.22
Standard size of wooden sleeper for Broad Gauge track is
275x25x13 cm
180x20x11.5 cm
225x23x13 cm
250x26x12 cm
Q.23
Number of cotters used in CST-9 sleepers is
2
3
4
5
Q.24
One degree of curve is equivalent to (where R is the radius of curve in meters.)
1600/R
1700/R
1750/R
1850/R
Q.25
The rail is designated by its
length
weight
cross-section
weight per unit length
Q.26
A treadle bar is used for
interlocking points and signal
setting points and crossings
setting marshalling yard signals
track maintenance
Q.27
Flange-way 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
Q.28
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
Q.29
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)
Q.30
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)
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