The station where observations are not made, but the angles at the station are used in triangulation series, is known as

The station which is selected close to the main triangulation station, to avoid intervening obstruction, is not known as

A

Satellite station

B

Eccentric station

C

False station

D

Pivot station

If the sum of two adjacent angles is equal to two right angles, then the two angles are ----

A

adjacent angles

B

straight angles

C

supplementary angles

D

condemnatory angles

The average of 100 observations in a study was calculated as 49.7 . Later it was revealed that one of the observations was misread as 64 instead of 94. What will be the correct average ?

A

52.5

B

49.8

C

55

D

50

The necessary geometrical condition for triangulation adjustment is:

A

The sum of the angles around a station should be 360°

B

The sum of the three angles of a plane triangle should be 180°

C

The sum of the eight angles of a braced quadrilateral should be 360°

D

All the above

Triangulation surveys are carried out for locating

A

Control points for surveys of large areas

B

Control points for photogrammetric surveys

C

Engineering works, i.e. terminal points of long tunnels, bridge abutments, etc.

D

All the above

The method of surveying by triangulation was first introduced by the Dutchman Snell in

A

1600

B

1615

C

1630

D

1650

In triangulation surveys

A

The area is divided into triangular figures

B

Control stations are located from which detailed surveys are carried out

C

Sides are not measured excepting the base line

D

All the above

Triangulation surveys are carried out for providing

A

Planimetric control

B

Height control

C

Both planimetric and height control

D

None of these

The portion of a brick cut to form angles other than right angles in plan, is known as

A

Queen closer

B

King closer

C

Closer

D

Squint brick

Three angles of a triangle are in proportion 5 : 6 : 7. Then what is the difference in degrees between the biggest and the smallest angles ?

A

15

B

20

C

25

D

30

The station where observations are not made, but the angles at the station are used in triangulation series, is known as

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