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GATE 2019 Surveying Quiz 2

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Question 1

The clogging of chain rings with mud introduces (with ‘error’ defined in the standard way)
1) Negative cumulative error
2) Positive cumulative error
3) Compensating error

Question 2

Which of the following minor instruments are used for setting out right angles in chain surveying?
(i) Cross staff
(ii) Optical square
(iii) Prism square
(iv) Auto level

Question 3

The Reduced Levels (RLs) of the points P and Q are + 49.600 m and + 51.870 m respectively. Distance PQ is 20 m. The distance (in m from P) at which the + 50.000 m contour cuts the line PQ is

Question 4

Reciprocal levelling was done between two points A and B, the readings of which are as shown below, which are 700 mm apart.

If the atmospheric conditions do not change during the period of observation and R.L. of A is 126.49 m, then the R.L. of B is _______ m.

Question 5

A bench mark has been established at the soffit of an ornamental arch at the known elevation of 100.0 m above mean sea level. The back sight used to establish height of instrument is an inverted staff reading of 2.105 m. A forward sight reading with normally held staff of 1.105 m is taken on a recently constructed plinth. The elevation of the plinth is

Question 6

The following measurements were made during testing a leveling instrument.

P1 is close to P and P2 is close to Q. If the reduced level of station P is 100.000m, the reduced level of station Q is
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Sep 30ESE & GATE CE