Q. The advantages of providing a pair of tunnels as compared to only one large highway tunnel is :

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Q. The following operations are required for tunnelling in rocky terrain :

1. Removing the foul gases
2. Marking the tunnel profile
3. Setting up and drilling
4. Checking misfire
5. Mucking

The correct sequence is :

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Q. For highways, tunnelling is preferred to if the open cut exceeds :

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Q. Which one of the following methods of tunnelling does not require the use of time bearing :

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Q. Pick up the mechanical ventilation method used for tunnels from the following:

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Q. To attain the required shape of the tunnel section, we use :

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Q. Pick up the correct statement from the following during tunnel excavation,

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Q. The method of draining in the tunnels, is generally known as

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Q. For tunnels exceeding 300 m in length, the grade should be provided below

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Q. Pick up the correct statement regarding drilling a tunnel from the following:

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Q. Which one of the following methods is adopted for permanent drainage of tunnels :

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Q. For hauling muck from the tunnel, the following type of muck-car is used :

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Q. High pressure grouting is generally restored for concreting in the lining if the rock strata is:

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Q. The length of the needle beam used in needle beam method of tunnelling is usually

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Q. Pick up the correct statement from the following:

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Q. An overhead track on a large truss frame is required in case of car changer by

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Q. Which one of the following methods is generally adopted for tunnelling in firm ground

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Q. The tunnels, the artificial underground passages are constructed for :

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Q. For full face method, the excavation to be done is generally divided into

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Q. For initial surveys of tunnels, the following activities are involved:

1. Marking portal point with concrete pillars on the ground
2. Marking tunnel obligatory points on the topographical maps
3. Preliminary setting of the tunnel on the topographical Survey of India maps
4. Driving lines between the fixed obligatory points.

The correct sequence of the activities is :

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