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You Are On Multi Choice Question Bank SET 559

27951. Distance between inner faces of the flanges, is kept

27952. Wooden sleepers used on the girders of bridges, are generally made of

27953. If D is distance between centres of two parallel track of gauge G, then, total length of cross-over (from the point of commencement to the point of termination) with an intermediate straight portion and N crossing, is given by

27954. If a 0.7% upgrade meets a 0.65% downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is

27955. Overall depth of a dog spike, is

27956. Best wood for wooden sleepers is

27957. The rail section which is not used on Indian metre gauge tracks, is

27958. Dimensions of a plate girder, are :

27959. Rail joint supported on a single sleeper, is known

27960. Maximum wheel base distance provided on Indian B.G. tracks, is

27961. The tread of wheels is provided an outward slope of

27962. On a straight railway track, absolute levels at point A on two rails are 100.550 m and 100.530 m and the absolute levels at point B 100 m apart are 100.585 m and 100.515 m respectively, the value of twist of rails per metre run, is

27963. Bearing plates are used to fix

27964. A welded rail joint is generally

27965. Safe speed (V) on a curve of radius 970 metres provided with two transition curves on Board Gauge track, is

27966. Two pipe systems can be said to be equivalent,when the following quantities are same:

27967. If α is switch angle and R is radius of the turnout, the length of the tongue rail, is

27968. The quantity of stone ballast required per metre tangent length, is

27969. The type of switch generally used for B.G. and M.G. tracks, is

27970. For flat bottom sleepers, maximum size of ballast, is

27971. Coning of wheels

27972. The sleepers which satisfy the requirements of an ideal sleeper, are

27973. Arrangement made to divert the trains from one track to another, is known as

27974. At a rail joint, the ends of adjoining rails, are connected with a pair of fish plates and

27975. Width of the top portion of a flat footed, rail, is

27976. For providing the required tilt of rails, adazing of wooden sleepers, is done for

27977. The life of a wooden sleeper depends upon

27978. The spread between the point and splice rails at a distance of 4.25 rn is 50 cm. The size of the crossing is

27979. Minimum packing space provided between two sleepers, is between

27980. The overall length of a turn out is the distance between the end of stock rail and

27981. According to Railway Board, no diamond crossing should be flatter than

27982. Coning of wheels is provided

27983. A scissors cross over consists of one diamond and

27984. For pipes,transition flow occurs when Reynolds number is:

27985. Heel divergency, the distance between the running faces of stock rail and gauge face of tongue rail, as recommended for Indian B.G. tracks, is

27986. Type of switch rails generally adopted for modern track, is

27987. If sleeper density is M + 7 for 13 m rails, the minimum depth of ballast under wooden sleepers (25 cm x 13 cm), is

27988. By interchanging gibs and cotters of a pot sleeper, gauge may be slackened by

27989. Composite sleeper index determines

27990. Indian Railways detects the rail flow by

27991. The rail section which is not used on Indian Broad Gauge tracks, is

27992. Ballast packed below and around the sleepers to transfer the load from sleepers to formation, generally consists of

27993. A wing rail is renewed or reconditioned if its maximum vertical wear is

27994. The place where a railway line and a road cross each other at the same level, is known as

27995. On Indian Railways standard length of rails for B.G. track, is

27996. Heel of crossing is the line joining

27997. A mono-block sleeper has

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