Ballast MCQs : Here you will find MCQ Questions related to "Ballast" in Railway Engineering. These Ballast MCQ Questions Will help you to improve your Railway Engineering knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations
Maximum size of Ballast is?
A. 2.0 cm
B. 3.0 cm
C. 4.0 cm
D. 5.0 cm
Explanation: Ballast maximum size is 1.9 to 5.0 cm with some reasonable proportion of intermediate sizes.
The maximum depth/thickness of ballast should be?
A. 6 inch to 24 inch
B. 1 inch to 10 inch
C. 10 inch to 15 inch
D. 6 inch to 30 inch
Explanation: The depth/thickness of ballast should be 6 inch to 24 inches. The depth is measured from top of sub grade to bottom of sleepers
The ballast top should be?
A. 0.0 to 1.0 inch
B. 0.5 to 1.0 inch
C. 0.0 to 5.0 inch
D. 1.0 to 10.0 inch
Explanation: The ballast top should be 0.5 to 1.0 inch below the rail bottom to allow rain water flow
Which of the following is true about Ballast?
A. Ballast allows for maintaining correct track levels without disturbing the rail road bed
B. It protect the surface of formation
C. Drain the water immediately
D. All of the above
Explanation: All of the above true about ballast.
Does ballast should be renewed from time to time?
C. Can be yes or no
D. Can not say
Explanation: The ballast should be renewed from time to time, because due to continuous hammering the ballast converted into the powder form. This powder along with dust, sand ashes from locomotive form an impervious layer and prevent the ease flow of water through ballast.
Which of the following materials can not be used as ballast material?
Explanation: Rubber materials can not be used as ballast material.
The ballast material should be not elastic?
C. Can be true or false
D. Can not say
Explanation: The ballast material should be elastic and should be provided in enough thickness such that to uniformly distribute the weight of train on the formation.
Which element transfers its load directly to the Ballast?
Explanation: The sleepers transfer the load imposed on it directly to the ballast. The Ballast which in turn transfers it to the formation and thus works efficiently.
Where can sand ballast be used with wooden and steel trough sleepers?
A. Only coarse sand can be used
B. Areas with low traffic density
C. Areas with steep slope
D. Areas with less rainfall
Explanation: Sand ballast is usually used for cast iron pots. It can be used with steel and wooden sleepers where traffic density is low.
Which of the following is the correct formula for calculating the depth of ballast cushion?
A. Sleeper spacing = width of the sleeper + 3 × depth of ballast
B. Sleeper spacing = width of the sleeper + depth of ballast
C. Sleeper spacing = 3 x width of the sleeper + 2 × depth of ballast
D. Sleeper spacing = width of the sleeper + 2 × depth of ballast
Explanation: The depth of the ballast cushion can be calculated by using the sleeper spacing and width of sleeper. Sleeper spacing = width of the sleeper + 2 × depth of ballast.