Civil Engineering MCQs

Page No. 136

Flangeway clearance is the distance_________________?


a between the adjoining faces of the running rail and the check rail near the crossing


b between the gauge faces of the stock rail and the tongue rail


c through which the tongue rail moves laterally at the toe of the switch


dnone of the above



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 ?


adetectors


bpoint lock


ciock bar


d stretcher bar


View Answer iock bar

The object of providing a point lock is_________________?


ato ensure that each switch is correctly set


b to ensure that the point may not be operated while the train is on it


c to detect any obstruction between and tongue rail


dnone of the above



A triangle is used for__________________?


achanging the direction of engine


btransferring wagons to and from parallel tracks without shunting


c separating all the sidings and shunting lines from main lines


d preventing the vehicles from running off the track



When semaphore and warner are installed on the same post, then the stop indication is given when___________________?


aboth arms are horizontal


bsemaphore arm lowered but warner arm horizontal


cboth semaphore and warner arms lowered


dnone of the above



For the purpose of track maintenance, the number of turn out equivalent to one track km are__________________?


a1


b 2


c 5


d10


View Answer 10

Which of the following statements regarding ballast materials are correct ?


a Brick ballast has poor drainage characteristics.


b Coal ash is not used as ballast with steel or cast iron sleepers.


c Gravel ballast gives better performance on soft formation.


d Sand ballast causes excessive wear on top of rail



Which one of the following rail failures is caused by loose fish bolts at expansion joints ?


acrushed head


b angular break


csplit head


d transverse fissures


View Answer crushed head

Consider the following statements about concrete sleepers_________________? 0 1. They improve the track modulus. 2. They have good scrap value. 3. They render transportation easy. 4. They maintain the gauge quite satisfactorily.Of these statements


a1 and 2 are correct


b2 and 3 are correct


c 3 and 4 are correct


d1 and 4 are correct


View Answer 1 and 4 are correct

A train is hauled by 2-8-2 locomotive with 22.5 tonnes and on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive?


a 15.0 tonnes


b 22.5 tonnes


c 45.0 tonnes


d90.0 tonnes


View Answer 22.5 tonnes

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