227) 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

228) For developing thinly populated areas, the correct choice of gauge is

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