Q. In need based directed track maintenance system, work is done round the clock.

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Q. Over the years what has led to an increase in necessity for maintenance and improvement in track structures?

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Q. What was the theory proposed by Zimmerman for the railway tracks?

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Q. On what factors does the mode of distribution of load on the track depends upon?

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Q. The load in kilograms per unit rail length required to produce one unit depression in the rail is known as ____

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Q. What is the unit of track modulus?

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Q. Studies by RDSO reveal that rail depression below the load is not directly proportional to the load in the whole load range.

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Q. Which among the following is not responsible for the variation in track modulus?

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Q. What are the types of track moduli?

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Q. Which of the following is not a type of force acting on the track?

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Q. Why is the value of dynamic load much more than that of static load?

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Q. What is the German formula for the speed factor of the train?

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Q. Which is the major force developed due to revolving masses like pins and coupling rods in the wheel?

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Q. How is the lateral displacement of rail balanced?

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Q. Hammer blow effect is because of the _____

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Q. In the Hammer blow effect formula H = Mr(2πn)² sinω/g, what does n stand for?

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Q. The maximum combined force of the Hammer blow, inertia of driving wheel, steam effect do not act simultaneously due to phase difference in position of counterweights.

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Q. As per the theory of Hertz the rail and wheel contact is similar to the contact between _____

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Q. The pattern of distribution of load under the sleepers does not depend on which of the following factors?

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Q. What is Photo-elastic method used for?

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