Actual length of chain = 30 - 0.1 = 29.9 m Actual distance = (29.9/30)×300 = 299m
38) A 30m metric chain is found to be 0.1m too short throughout the measurement. If the distance measured is recorded as 300m, then the actual distance measured will be
Answer is:
299 m
Explanation:
Related RRB JE Mechanical Question Paper 2014 (Set-1) with Answer Key
Answer is:
Check levelling
Explanation:
Levelling by balancing backsight and fore-sight distances can eliminate collimation error. Error due to curvature and refraction can be eliminated by equalizing FS and BS distances or by reciprocal levelling.