Q. What does ‘S’ stand for in the CSI equation?

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Q. Which of the following is not an advantage of the wooden sleepers?

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Q. Which of the following is not a major reason for less service life of wooden sleepers?

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Q. Centre heart, knots, split ends are basically the types of ______ found in wooden sleepers.

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Q. According to the recommendations of the committee of the railway board what should be used compulsorily when traffic density exceeds 20GMT on BG routes?

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Q. Which type of sleepers do not require any treatment and can be directly laid on the track?

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Q. What will happen if Non-durable type of sleepers are used without any treatment?

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Q. What is timber produced from trees with broad leaves also known as?

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Q. The sleepers made of wood from naturally durable species are classified as ______

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Q. What is another name of Full cell method?

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Q. In which process maximum retention of hot creosote oil is practiced?

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Q. Why a final vacuum is applied in the Full cell process?

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Q. Empty cell (Rueping) process is used for treating which type of timber?

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Q. Where are Fir sleepers used?

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Q. What is the order for recovery of preservatives in these processes?

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Q. Why is prophylactic treatment of sleepers done?

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Q. What is used for removing the moisture content in Boulton process?

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Q. Seasoning of sleepers is done to remove the excess preservative from the wood?

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Q. Which of the following is not a way of stacking of sleepers?

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Q. In which type of sleepers the heartwood side is kept upwards and the sapwood side downwards?

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