WorksheetsDAY 86 WORKSHEET ITI - Railway Track
Total questions: 15
Worksheet time: 8mins
Corrugated rails are mainly characterized by:
Longitudinal cracks in rail head
Minute concave depressions on rail surface
Excessive lateral displacement of rails
Sudden fracture of rail ends
Roaring sound due to corrugated rails is more pronounced when:
Loaded trains pass
Empty trains pass
Trains move at low speed
Rails are newly laid
Buckling of rails is most likely to occur during:
Cold weather
Rainy season
Foggy weather
Hot weather
Hogging of rails is mainly caused due to:
Excessive rail creep
Loose packing under joints and loose fish plates
High axle loads only
Improper ballast cushioning
Wheel burns on rails are caused primarily due to:
Excessive braking of coaches
Slipping of driving wheels on rail surface
Uneven rail joints
Improper cant of rails
Which theory of rail creep explains movement due to impact at rail joints?
Wave theory
Drag theory
Percussion theory
Expansion theory
Maximum permissible creep on standard gauge track as per Indian Railways is:
50 mm
100 mm
150 mm
200 mm
Buckling of rails can lead to derailment of trains.
True
False
Wheel burns are common on straight tracks with dry conditions.
True
False
Assertion (A): Creep of rails is the longitudinal movement of rails along the track. Reason (R): Creep occurs mainly due to thermal expansion of rails only.
A is true, R is true and R explains A
A is true, R is false
A is false, R is true
A is false, R is false
Corrugated rails generally show corrugations at intervals of __________ mm to __________ mm.
20
200
Buckling of rails occurs when rail (a) is prevented.
Hogged rails bend (a) at the rail ends.
Wheel burns are common at (a) gradients and rainy locations.
Kinks in rails cause defects in __________ and __________.
gauge
alignment
