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The following consecutive readings were taken with a dumpy level:
0.635, 1.525, 2.395, 0.605, 0.805, 0.125 
The instrument was shifted after the third and fifth readings. The readings 2.395 and 0.635 respectively represents
  • a)
    F.S. and B.S.
  • b)
    F.S. and I.S.
  • c)
    B.S. and F.S.
  • d)
    I.S. and B.S.
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The following consecutive readings were taken with a dumpy level:0.635...
Explanation:

In a dumpy level, the instrument station (I.S.), the back sight (B.S.), and the foresight (F.S.) are the three important terms used to determine the elevation of the points.

Given readings: 0.635, 1.525, 2.395, 0.605, 0.805, 0.125

It is given that the instrument was shifted after the third and fifth readings. Therefore, the readings can be divided into two sets as follows:

First set of readings: 0.635, 1.525, 2.395
Second set of readings: 0.605, 0.805, 0.125

To determine the instrument station (I.S.), the average of the first and last readings is taken. Therefore,

I.S. = (0.635 + 2.395)/2 = 1.515

To determine the back sight (B.S.), the last reading of the first set is taken. Therefore,

B.S. = 2.395

To determine the foresight (F.S.), the first reading of the second set is taken. Therefore,

F.S. = 0.605

Therefore, the readings 2.395 and 0.635 respectively represent the back sight (B.S.) and the instrument station (I.S.). Hence, the correct answer is option 'A' (F.S. and B.S.).
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The following consecutive readings were taken with a dumpy level:0.635, 1.525, 2.395, 0.605, 0.805, 0.125The instrument was shifted after the third and fifth readings. The readings 2.395 and 0.635 respectively representsa)F.S. and B.S.b)F.S. and I.S.c)B.S. and F.S.d)I.S. and B.S.Correct answer is option 'A'. Can you explain this answer?
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The following consecutive readings were taken with a dumpy level:0.635, 1.525, 2.395, 0.605, 0.805, 0.125The instrument was shifted after the third and fifth readings. The readings 2.395 and 0.635 respectively representsa)F.S. and B.S.b)F.S. and I.S.c)B.S. and F.S.d)I.S. and B.S.Correct answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about The following consecutive readings were taken with a dumpy level:0.635, 1.525, 2.395, 0.605, 0.805, 0.125The instrument was shifted after the third and fifth readings. The readings 2.395 and 0.635 respectively representsa)F.S. and B.S.b)F.S. and I.S.c)B.S. and F.S.d)I.S. and B.S.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The following consecutive readings were taken with a dumpy level:0.635, 1.525, 2.395, 0.605, 0.805, 0.125The instrument was shifted after the third and fifth readings. The readings 2.395 and 0.635 respectively representsa)F.S. and B.S.b)F.S. and I.S.c)B.S. and F.S.d)I.S. and B.S.Correct answer is option 'A'. Can you explain this answer?.
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