Metal sleepers are superior to wooden sleepers with respect to
Cost
Life
Track circuiting
Fastening
Q.2.
Standard size of wooden sleeper for Broad Gauge track is
275x25x13 cm
180x20x11.5 cm
225x23x13 cm
250x26x12 cm
Q.3.
Tensile strength of steel used in rails should not be less than
450 MPa
500 MPa
700 MPa
850 MPa
Q.4.
Head width ofkg rail section is
61.9 mm
66.7 mm
67 mm
72.33 mm
Q.5.
Largest dimension of a rail is its
height
foot width
head width
any of the above
Q.6.
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
Q.7.
Pick up the incorrect statement from the following:
Sleepers hold the rails at proper gauge on straights
Sleepers provide stability to the permanent way
Sleepers act as an elastic cushion between rails and ballast
None of these
Q.8.
The gradient on which an additional engine is required to negotiate the gradient, is called
momentum gradient
pusher gradient
ruling gradient
steep gradient.
Q.9.
A treadle bar is used for
interlocking points and signal
setting points and crossings
setting marshalling yard signals
track maintenance
Q.10.
What is Permanent way?
It is the path of immense strength
In short, it is combination of rails, sleepers, ballast and subgrade fitted together
Very strong railway of high tensile and compressive strength
there is no such thing
Q.11.
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.12.
The nominal size of ballast used for point and crossing is _____
25 mm
40 mm
50 mm
100 mm
Q.13.
For acurve track diverging from a main curve ofin an opposite direction in the layout of a broad gauge yard, the cant to be provided for the branch track for maximum speed ofkm/h on the main line and ‘G’ = 1.m is (Permitted cant deficiency for the main line = 7.6 cm)
0.168 cm
-0.168 cm
7.432 cm
7.768 cm
Q.14.
Heel divergence is
Always less than flange-way clearance
Equal to flange-way clearance
Always greater than flange-way clearance
Sometimes greater than flange-way clearance
Q.15.
Effective length of a runway is the distance between
ends of the runway
point of intersection of the obstruction clearance line and the extended plane of the runway surface, and the other end of the runway
point of intersection of the glide path and the extended plane of the runway surface and the other end of the runway
ends of the clear way on either side.
Q.16.
The height of the rail forkg rail section is
143 mm
156 mm
172 mm
129 mm
Q.17.
Composite sleeper index determines
Number of sleepers per rail length
Suitability of wooden sleepers
Permissible stresses in steel sleepers
None of these
Q.18.
Sleepers with highest scrap value are made up of:
Concrete
Cast Iron
Wooden
Plastic
Q.19.
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.20.
What does ORR stand for?
Office of Rail and Road
Office of Rail Regulation
Overall Response Rate
Office of Regulation Review
Q.21.
Wear of rails is maximum in weight of
tangent track
sharp curve
tunnels
coastal area
Q.22.
The slipping of driving wheels of locomotives on the rail surface causes
wheel burns
hogging of rails
scabbing of rails
corrugation of rails
Q.23.
Largest percentage of material in the rail is in its
head
web
foot
head and foot both
Q.24.
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
Q.25.
The limiting value of cant gradient for all gauges is
1 in 360
1 in 720
1 in 1000
1 in 1200
Q.26.
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
Q.27.
Which of the following types of sleepers is preferred on joints ?
CST-9 sleeper
steel trough sleeper
wooden sleeper
concrete sleeper
Q.28.
Loose jaws of steel trough sleepers are made of
cast steel
mild steel
cast iron
spring steel
Q.29.
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
Q.30.
Maximum value of ‘throw of switch’ for Broad Gauge track is
89 mm
95 mm
100 mm
115 mm
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