229) Due to battering action of wheels over the end of the rails, the rails get bent down and are deflected at ends. These rails are called

230) The slipping of driving wheels of locomotives on the rail surface causes

231) The width of foot for 90 R rail section is

232) The height of the rail for 52 kg rail section is

233) The formation width for a railway track depends on the i) type of gauge ii) number of tracks to be laid side by side iii) slope of sides of embankment or cutting The correct answer is