WorksheetsDay 118-Jan 29 worksheet-Btech-Ballast & formation
Total questions: 15
Worksheet time: 8mins
The primary function of ballast in a railway track is to
Increase speed of trains
Hold sleepers firmly and provide elasticity
Reduce fuel consumption
Protect rails from corrosion
Sand ballast is generally avoided on main lines because it
Is costly
Has poor drainage
Leads to rapid wear
Is difficult to pack
The depth of ballast is measured from the
Top of rail to formation
Bottom of sleeper to top of formation
Top of sleeper to bottom of formation
Rail head to subgrade
Broken stone ballast provides better drainage and track stability than sand ballast.
True
False
Brick bats ballast is recommended for all main and branch railway lines.
True
False
Ballast is laid below and around the (a) .
Granite is the best type of broken stone ballast but is (a) .
Gravel ballast is considered the (a) best ballast material.
Sand ballast is mostly used for packing under (a) sleepers.
Kankar ballast consists of (a) of various sizes.
Selected earth ballast is used to prevent (a) of good ballast.
The depth of ballast is represented by the symbol (a) .
The ballast quantity for MG track is approximately (a) m³ per meter.
Loose ballast between two adjacent sleepers is called ballast (a) .
Formation is also known as railway (a) .
