Mine Surveying - Study Mode

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[#76] The length of the line measured with a 30m chain was found to be 450m. Calculate the true length of the line if the chain was 0.15 in too long.

(A) 447.75m

(B) 450m

(C) 450.675

(D) 452.25m

Correct Answer

(D) 452.25m

[#77] Reduced bearings are measured from . . . . . . . .

(A) East or West or North or Soth

(B) North clock wise

(C) South clock wise

(D) North and south to East or West

Correct Answer

(D) North and south to East or West

[#78] From the following page of a levelling field book, the missing values in F. S. and B. S respectively are Station B. S. I. S. F. S. Rise Fall Remarks 1 4.550 Starting Point 2 2.125 ? 0.750 Change point 3 2.225 4 ? 1.975 Change point 5 2.445 1.500

(A) 3.804, 0.945

(B) 3.804, 3.945

(C) 5.300, 0.945

(D) 5.300, 3.945

Correct Answer

(D) 5.300, 3.945

[#79] Common scale used for plotting building site is . . . . . . . .

(A) 1mm = 1m

(B) 10mm = 2m

(C) 1mm = 10m

(D) 10mm = 1km

Correct Answer

(B) 10mm = 2m

[#80] The dip of the magnetic needle at the pole is . . . . . . . .

(A) 0°

(B) 45°

(C) 90°

(D) 180°

Correct Answer

(C) 90°