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MCQs

Total Questions : 45 | Page 5 of 5 pages
Question 41. In the subtense bar method, the horizontal angle subtended by two targets fixed on a horizontal bar at a known distance apart is measured at instrument station by theodolite.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 42. Stadia readings were taken with a theodolite on a vertical staff with the telescope inclined at an angle of depression of 3º30′. The staff readings were 2.990, 2.055 and 1.120. The reduced level of the staff station is 100.000m, and the height of the instrument is 1.40 m. What is the reduced level of the ground at the instrument? Take constants as 100 and zero.
  1.    102.050 m
  2.    122.050 m
  3.    112.050 m
  4.    132.050 m
 Discuss Question
Answer: Option C. -> 112.050 m
Answer: (c).112.050 m
Question 43. The following readings were taken with a tachometer on to a vertical staff. Horizontal Distance Stadia Readings 46.20 m 0.780; 1.010; 1.240 51.20 m 1.860; 2.165; 2.470. Calculate the tacheometric constants.
  1.    100, 0.20 m
  2.    200, 0.10 m
  3.    100, 0.10 m
  4.    200, 0.20 m
 Discuss Question
Answer: Option A. -> 100, 0.20 m
Answer: (a).100, 0.20 m
Question 44. A tacheometer is setup at an intermediate point on a traverse course PQ and the following observations are made on a staff held vertical. Staff Station Vertical Angle Staff Intercept Axial Hair Readings P + 9º30′ 2.250 2.105 Q + 6º00′ 2.055 1.975. The constants are 100 and 0. Compute the length PQ and the reduced level of Q. RL of P = 350.50 m.
  1.    428.13 m; 335.47 m
  2.    402.13 m; 335.47 m
  3.    422.13 m; 305.47 m
  4.    422.13 m; 335.47 m
 Discuss Question
Answer: Option D. -> 422.13 m; 335.47 m
Answer: (d).422.13 m; 335.47 m
Question 45. The two targets are at a distance s apart, and each at s/2 from the centre, i.e. vertical axis. The horizontal angle α is measured carefully by means of a theodolite. Then what is the value of D in the subtense bar method?
  1.    s/2α
  2.    s/α
  3.    s/4α
  4.    2s/α
 Discuss Question
Answer: Option B. -> s/α
Answer: (b).s/α

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