25. Draftman Grade I Department Kerala Port

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100 questions

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- Q1The general method of determining the distance of boundaries during reconnaissance surveyTachcometryDirect methodSpeedometerPacing30s
- Q2The Bowditch rule is based on the assumption that probable error of closure of a traverse is proportional to : Where l is the length of the line ?√ l1√ ll23√ l30s
- Q3The methods of plane surveying can be done for an area, not more than:500 Sqkm5000 Sqkm250 Sqkm1000 Sqkm30s
- Q4Which one of the following scales is the smallest1 cm = 1 kmImm= 1 m1:20000RF = 1/200030s
- Q5The coefficient of linear expansion of invar as compared to that of ordinary steel is about1/30001/300001/3001/3030s
- Q630s
- Q730s
- Q8The term height of instrument (HI) in leveling isElevation of line of sight with respect to a datumElevation of line of sight with respect to MSIElevation of the instrument axis above the staff stationHeight of instrument axis above the station point30s
- Q9While levelling a steep slope, it is preferable to setup the instrument successively alongStraight lineZig-Zig lineCurved lineDiagonal line30s
- Q10The contour interval is :Small on hilly areaDirectly proportional to the scale of mapGreater on flat groundInversely proportional to the scale of map30s
- Q11In a vernier theodolite having least count 20”, the value of vernier scale division is1/60 x 20"59/60 x 20"59/ 60 x 20"59/60 x 20"30s
- Q12To measure a vertical angle of an objectVernier C should set zeroNo need of set zero in the vernierBoth verniers C and D should set zeroVernier D should set Zero30s
- Q13The some of the interior angle of a closed traverse is , where ‘N’ is the number of angles,(2N-4) x 180°(N-2) x 180°(2N +4 ) x 180°(N + 2 ) x 180°30s
- Q14The method of tachnometry is generally done byMovable hair systemSubtense bar systemNone of the abovefixed hair system30s
- Q1530s