Engineering - Civil Enginnering

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25.

For accurate work, the steel band should always be used in preference to chain because the steel band                        
A. is lighter than chain B. is easier to handle
C. is practically inextensible and is not liable to kinks when in use D. can be easily repaired in the field



26.

For which of the following permanent adjustments of theodolite, the spire test is used ?                        
A. adjustment of plate levels B. adjustment of line of sight
C. adjustment of horizontal axis D. adjustment of altitude bubble and vertical index frame



27.

Height of instrument method of levelling is                        
A. more accurate than rise and fall method B. less accurate than rise and fall method
C. quicker and less tedious for large number of intermediate sights D. none of the above




28.

If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will                        
A. increase B. decrease
C. not change D. either 'a' or 'b'



29.

If in a closed traverse, the sum of the north latitudes is more than the sum of the south latitudes and also the sum of west departures is more than the sum of the east departures, the bearing of the closing line is in the                        
A. NE quadrant B. SE quadrant
C. NW quadrant D. SW quadrant



30.

If the length of a chain is found to be short on testing, it can be adjusted by                        
A. straightening the links B. removing one or more small circular rings
C. closing the joints of the rings if opened out D. all of the above



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