Civil Engineering MCQs

Page No. 273

Which of the following is not used in measuring perpendicular offsets ?


aline ranger

✓


bsteel tape

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coptical square

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dcross staff

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View Answer line ranger

Cross staff is an instrument used for________________?


ameasuring approximate horizontal angles

✖


bsetting out right angles

✓


cmeasuring bearings of the lines

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dnone of the above

✖



If the length of a chain is found to be short on testing, it can be adjusted by______________?


astraightening the links

✓


bremoving one or more small circular rings

✖


cclosing the joints of the rings if opened out

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d all of the above

✖



Normal tension is that pull which_______________?


a is used at the time of standardising the tape

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bneutralizes the effect due to pull and sag

✓


cmakes the correction due to sag equal to zero

✖


d makes the correction due to pull equal to zero

✖



The permissible error in chaining for measurement with chain on rough or hilly ground is_____________?


a1 in 100

✖


b1 in 250

✓


c1 in 500

✖


d1 in 1000

✖


View Answer 1 in 250

Which of the following angles can be set out with the help of French cross staff?


a45° only

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b90° only

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ceither 45° or 90°

✓


dany angle

✖


View Answer either 45° or 90°

The angle of intersection of the two plane mirrors of an optical square is______________?


a30°

✖


b45°

✓


c60°

✖


d90°

✖


View Answer 45°

During chaining along a straight line, the . leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is_____________?


a4 chains

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b6 chains

✓


c120 m

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d180m

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View Answer 6 chains

For a well-conditioned triangle, no angle should be less than______________?


a20°

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b30°

✓


c45°

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d60°

✖


View Answer 30°

The allowable length of an offset depends upon the______________?


adegree of accuracy required

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bmethod of setting out the perpendiculars and nature of ground

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cscale of plotting

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dall of the above

✓


View Answer all of the above

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