Civil Engineering MCQAE Level Civil Engineering
A staff reading of 1.872 m is observed at 100 m. Bubble is then moved 5 divisions and staff reading becomes 1.906 m. Sensitivity of bubble tube is:
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Choose the correct answer
A
30 sec
B
14 sec
C
22 sec
D
28 sec
Correct Answer
B. 14 sec
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Change in reading = 0.034 m over 100 m gives total angle about 70 sec; per division = 70/5 = 14 sec
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.